Photo print sizes – abcdef.wiki

Basic terms for understanding the topic

Pixels are small square dots, colored in a certain light, that make up a single whole – an image.

When you look at a photograph, the eye does not notice specific dots of the raster, since they are very small and their number can reach tens of thousands; they merge to form one picture. Only with magnification will you be able to see them.

There is a peculiarity: the higher the number of raster dots, the more details are drawn and the better the quality of the photograph.

Linear size is data on the width and height of the printed image, expressed in millimeters. They can be recognized using a regular ruler. For example, the linear size of an image with parameters 10*15 cm is 102*152 mm.

Parameters in pixels are data on the width and height of a digital image.

There is one peculiarity. Digital cameras take pictures of the same sizes: 640*480, 1600*1200, but on the monitor we see 800*600,1024*768,1280*1024. That is a significant discrepancy.

Let’s look at examples. If the picture has a size of 450×300 raster pixels, then the picture will be rotated to fit the album, that is, positioned horizontally. What does this depend on? The width of the image is greater than the height.

If we take the picture size as 300*450, then it will be located in portrait orientation, that is, vertically. Why is this so? The width is less than the height.

Resolution is a number that relates values ​​in millimeters and pixels, measured in dpi (from the English “dots per inch” – the number of dots per inch).

Experts advise setting the resolution to 300 dpi, intended for obtaining high-quality photographs. Minimum resolution – 150 dpi.

The higher the indicator, the better the quality of the photo.

But it’s worth noting that if you take a photograph larger than the original, that is, “stretch the raster points,” then the quality drops.

Resolution may vary depending on different camera models. What’s the secret? Manufacturers of photographic equipment indicate an inaccurate number of megapixels, for example, 12 MP. In fact, it may turn out to be 12.3 or 12.5 MP. But the print quality will not deteriorate due to this fact.

What are minilabs?###

In modern photo laboratories, the bulk of photographs are printed on special machines called minilabs. This equipment is focused on printing small and medium formats – usually from 10 x 15 to 30 x 90 cm inclusive. The peculiarity of minilabs is the optimization of processes for mass photo printing of standard (not arbitrary) formats.

Using a special laser or LED head, the image from the RGB graphic file is exposed on photo paper with a photosensitive emulsion, then the print goes through the classic “wet” process. Modern minilabs, combined with technologies for working over a local network, make it possible to print 1000-1800 digital prints of 10 x 15 per hour or more.

When printing from photographic film, a negative or slide is scanned with a special built-in scanner, then work with the image is done in the same way as with a regular file. In small laboratories, where stopping production is not too critical for the business, there is usually one machine. In medium and large laboratories, less than 2-3 high-performance minilabs are rarely installed.

The photo printing operator makes color correction.

Over the past few years, the market for minilab manufacturers has narrowed to two giants – Noritsu and Fuji. According to unofficial data, at this time attempts were made to unite the relevant divisions into a single corporation, but the Antimonopoly Committee of Japan did not allow this.

As a result, today both companies produce almost identical minilabs, but under different logos. All other minilab manufacturers have ceased operations. Recently, Chinese manufacturers, in particular Sophia, have begun to appear on the market.

Despite the fact that their minilabs actually copy Noritsu, the quality of these machines leaves much to be desired, so such machines are used mainly in laboratories without any significant requirements for print quality. Apparently, the share of such machines in the world is still insignificant.

In addition to minilabs, there are printing machines for large formats. The leader of “large format” in our time is the Italian manufacturer Durst. In general, the printing technologies on these machines are the same as on minilabs. The main differences are the possible print formats, resolution and color gamut, which tends to be slightly higher for larger machines.

“photoshop”

  1. For another method, you will need Photoshop. Look on the control panel on the left for an icon that looks like two crossed corners and a diagonal dotted line. Right-click on it and a list of available functions will appear. We are interested in the top one – “Frame”. It has the same icon.
  2. Open the desired file for editing in Photoshop. As in the case of Paint, this can be done through the “Open” menu item, or by dragging a picture into the program’s working field.
  3. By default, the picture will be protected from editing. To remove protection, pay attention to the right menu in the program. A picture appeared there and to the right of it was an image of a closed castle. Double-click the left mouse button on the lock icon. You will be prompted to create a new layer – click OK. The image can now be edited.
  4. Using the “Frame” tool, which we looked at in point No. 1, select the desired part of the image. This is done by stretching the frame in the same way as in the case of the Paint program. Frame dimensions can be dragged and stretched left/right/diagonally. As soon as you mark the desired area with a dotted line, press Enter on the keyboard. The program will generate a separate fragment based on the selection. Photo print sizes - abcdef.wiki
  5.   Using the “Save As” menu item, save the file. Please note that by default, Photoshop suggests saving the image with the extension *. PSD. If you need a different permission – *. JPG or *. PNG – Manually select other options when saving.

4 | file size or “photo weight”:

Now let’s look at the “weight of the photograph”. Historically, there has been a lot of confusion on this issue and file size is quite often referred to as “photo weight,” which is more convenient than correct. File sizes are measured in megabytes (MB) or kilobytes (KB). And here it’s worth remembering that, unlike kilograms, where 1 kg = 1000g, 1 megabyte = 1024 kilobytes.

How this looks in practice: imagine the situation that your camera has a memory card that says 64GB (gigabytes). If you look at exactly how many bytes there are (right-click on “properties” on your computer), it turns out that there are 63567953920 bytes on this memory card and this is equal to 59.2 GB.

What determines the file size:

  • Firstly, on the size of the photo (what is measured in pixels): the file with the first photo of berries (photo size 7360×4912 px) is 5.2 MB, and it, reduced to 150 px, will “weigh “75.7 kV (69 times less).
  • Secondly, on the format (JPG, TIFF, RAW), which you can read about below.
  • Thirdly, the file size (or “photo weight”) depends on the number of details: the more there are, the “heavier” the photo (which is most relevant for the JPG format).
Много деталей - больше вес фотографии | Что такое размер фото и вес файла, как они измерятся и от чего зависят. Формат фотографии JPG и RAW, что о них стоит знать. | Размер, вес и формат фотографий | Позитивные путешествия AsiaPositive.com
Many details – more weight of the photo

For example, in this photograph with monkeys from Sri Lanka there are many small, clear (in the language of photographers, “sharp”) details and the file size of this photograph is 19.7MB, which is significantly larger than berries in a vase on a white background ( 5.2MB).

If you ask what size photo can I print from a photo that weighs 2MB. No one can answer you until they know the number of pixels. And it’s better, of course, to also look at the photo, since some craftsmen like to get a photo from the depths of the Internet, increase the number of pixels programmatically, and then want to print it on the cover of a magazine. It turns out as in the example above with a stretched photo of a vase 150 px wide.

File size (often called “photo weight”) is measured in megabytes (MB) or kilobytes (KB) and depends on the format, pixel size, and detail of the photo.

Change image size in pixels online – img online

Processing JPEG photos online.

The main thing is to specify the file on your computer or phone, enter the dimensions in pixels and click OK. The rest of the settings are set to default. You can also change the photo size in: Centimeters for printing
| Megapixels
| Percentage
| Megabytes (compress)
, as well as high quality Enlarge small picture
.

To change the size “With respect to proportions”, you can specify not only both sides (width and height), but also one of these sides, for example, specify the width as 1366 pixels, and leave the field for entering the height empty or vice versa. Thus, the second parameter will automatically adjust to the desired value.

For contraction or stretching
pictures in height or width, you must select this type of resizing: “Rubber, exactly to the specified dimensions.”

To make a square picture
, you need to specify the same width and height in pixels, for example, 1080×1080 (this size is used on Instagram.com) and select “Crop excess edges exactly to the specified dimensions” in the settings; if necessary, you can specify the part of the image that does not need to be cropped .

Here you can also reduce and automatically crop a wallpaper or picture exactly to the size of your desktop
. To do this, you need to enter the width and height of your monitor in pixels and select the type of resizing “Cropping excess edges, exactly to the specified dimensions”; for more accurate positioning, you can first crop the image
, approximately as needed in the end, and then process it on this page.

The original image is not changed in any way. You will be provided with another processed image, as well as its dimensions in pixels and megabytes before and after processing.

How to calculate the correct image size and resolution for printing and displaying on the screen

One of the most confusing things for a new photographer can be understanding the difference between file sizes and resolution for printing or displaying on a monitor. In this article, photographer Helen Bradly helps you figure it out and shows you how to resize images depending on what you want to do with them: print or display on the screen of an electronic device
. Let’s start.

What is the resolution of digital cameras?

When it comes to digital cameras, resolution refers to the number of megapixels produced by the image sensor. This in turn usually corresponds to the amount of detail the camera can capture. So if your camera has 20 megapixels (often referred to as 20 MP), it will capture less detail than a 30 megapixel camera, which in turn will capture less detail than a 40 megapixel camera. But what is a megapixel, really? ? And how does this affect your ability to print and display photos?

Megapixels and photo size

Как рассчитать правильно размер и разрешение изображения для печати и отображения на экране

Technically, a megapixel is equal to 1,048,576 pixels; in fact, camera manufacturers round this number to the nearest 1,000,000 when talking about what image size the camera will capture.

Helen’s camera, for example, captures 14.6 megapixel images, which is about 14,600,000 pixels per image (14.6×1,000,000). This information doesn’t tell you anything about the actual pixel dimensions of the image, it only tells you the total number of pixels that make up the image.

Its camera, like most DSLRs, shoots images with an aspect ratio of 1.5. Thus, the ratio of the number of pixels along the long edge of the image to the short edge of the image is 3:2.

Each of the full-size RAW images
photographer has a size of 4672×3104 pixels. So, by multiplying the number of pixels in the width of the image by the number of pixels in the height of the image, we get the actual number of pixels in the image (4672×3104 = 14,501,888). We could call it 14.5 MP, but camera manufacturers have rounded up the number and call such a camera 14.6 MP.

You can check the width and height of the image using photo editing software. In Photoshop, you can open an image, then choose File > File Info > Camera Data. The image above shows the dialog box with the information received.

So, a pixel itself is a single element of an image – and for our purposes, it is the smallest element into which a photograph can be divided. A pixel can only be one color, but a photograph is made up of a grid of thousands of pixels, each with a different color, that together make up the final image. You can see the pixels if you open the photo and zoom in until you see individual blocks of color (as shown below). Each of these blocks represents a separate pixel.

Как рассчитать правильно размер и разрешение изображения для печати и отображения на экране

Why size is important when printing

When printing images, photographers come across the term PPI/DPI or pixels per inch. D PI refers to the number of dots contained in one inch of an image printed on paper by a printer. P PI refers to the number of pixels contained in one inch of image displayed on a computer monitor. Most print services and your own printer will require a certain pixel density in the image (PPI) to be able to print a photo that looks good (that is, with smooth color transitions so you don’t have to look at every single pixel).

Typical print PPI values ​​range from 150 to 300 PPI, although some high-quality magazines may require 1200 PPI images. So, for example, if you want to print a 4×6-inch image at 300 pixels per inch, you’ll need a file that is at least 4×300 (1200) pixels on the short side and 6×300 (1800) pixels on the long side. In other words, it must be at least 1200×1800 pixels in size.

To print an 8×10 inch image at 300 PPI, use the same math.

Multiply the width and height of the printed image in inches by 300 pixels. The result is 2400×3000 pixels, which is the image resolution needed to print an 8×10 image at 300 pixels per inch. So when cropping and resizing an image for printing, you need to know what the PPI of the image should be. This should be stated in your printer manual or printing service.

Below is a screenshot from the MpixPro.com website showing the optimal and minimum image sizes for standard print sizes. The printer prints them
at 250 PPI (but can handle 100 PPI images), although other services may vary, so always check before preparing images for printing.

Use the crop or resize function in your software to resize the image to your desired width and height and desired PPI resolution.

Here, an image cropped to 3000×2400 pixels is adjusted from 72 PPI to 300 PPI in preparation for printing at 300 PPI. No resampling is required since the image is already at the correct dimensions and only resolution is required.

Как рассчитать правильно размер и разрешение изображения для печати и отображения на экране

Photoshop, like other applications, will also crop an image to a fixed size and resolution if you enter desired values ​​in the Options Bar when you have the Crop Tool selected (see below). If your image is smaller than the specified dimensions, it will be enlarged using the default resampling method. While it is generally not recommended to enlarge images, provided the image is already close to the desired size, enlarging it slightly usually does not cause a noticeable loss in quality.

Как рассчитать правильно размер и разрешение изображения для печати и отображения на экране

Fit to screen

When it comes to displaying images on screen, you need far fewer pixels than when printing. This is because the pixel density on the screen is much less than what is required for printing. For example, the size of a regular FullHD monitor is 1920×1080 pixels. To fill your monitor, you only need a 1920×1080 pixel image. This is about the same image size needed for a 4×6 print at 300 PPI, but still displays a 1920×1080 pixel image perfectly on a 23-inch monitor.

Review

Unlike ISO 216 paper sizes, photo print proportions vary, so accurate scaling of prints is not always possible. However, there are some logical correspondences between sizes, listed below where applicable.

Many standard sizes match sheet film formats and are suitable for making contact sheets from these films.

No

15 × 20

Ofuku Hagaki

(

)

148 × 200


4.12

4∶3 (1.35)

No



5.8 × 8.3

)

148 × 210

8″

4∶3

US?

6D


6 × 6

× 

No



7 × 9


1

178 × 240

6.00

4∶3 (1.36)

ISO 1008

8R

8 × 10

5∶4



2

× 11

216 × 279

13∶10 (1.29)

ISO 1008

8R, S8R

Small 12″

8 × 12

3∶2

254 × 381

13.5
3∶2

НАС;

11R


11 × 14

279 × 356

ISO 1008



A3

2

3

×

16

1

2

ISO 216

12R

12 × 15


305 × 381

5∶4

Tabloid, Ledger



16.8

30 × 40

12 × 16


4∶3

ISO 1008

12R , S12R



305 × 457

НАС;

508 × 711

No

508 × 749


24R

24 × 31.5

No


A1

( 23

3

× 33

1
10

594 × 841

69.7




3∶2

No

30R


30 × 40

× 

4∶3


In the US, size names are often indicated by the format code n R , where the number n represents the length of the shorter edge in inches? In the regular series, the long edge is equal to the length of the short edge plus 2 inches (10 inches or less)
or 3 inches (11 inches or more). The alternative Super series, designated SnR, nR Plus or nR, has an aspect ratio of 3×2 (or as close as possible) and is thus better suited to standard 135 (35mm) film

Common photo printing sizes and codes, approximate sizes in parentheses.
us Japan China cm Nickname inch × inch mm × mm min. Mpx Aspect Ratio Standard
1″ 2.5 × 3.5
1 × 1.5
No
Large 1″ / Small 2″ 33 × 48
No
2″ (for certificates) 35 × 49
No
2″ 35 × 53
No
A9 ( 1.5 × 2

)
37 × 52
0.27 7∶5 (√2) ISO 216
Wallet 2 × 3
( 51 × 76

)
0.54 3∶2 No
A8 ( 2 × 3

)
52 × 74
0.54 7∶5 (√2) ISO 216
2R Wallet (old) 2
1
2

× 3
1
2
( 63.5 × 89

)
1.78 7∶5 No
A7 ( 3 × 4

)
74 × 105
1.08 7∶5 (√2) ISO 216
DSC ( 3
1
4

× 4
2
3

)
83 × 119
1.38 3∶2 (1.43) No
( 3
1
2

× 4
2
3

)
89 × 119
1.48 4∶3 (1.34) No
3R L B7 ( 3
1
2

×5)
88 × 125
1.54 7∶5 (√2) ISO 216
3R L 5″ 9 × 13
Print 3
1
2

×5
89 × 127
1.58 10∶7 (1.43) ISO 1008
PC 10 × 15
Hagaki ( 3.9 × 5.8

)
100 × 148
1.94 3∶2 (1.48) No
A6 ( 4.1 × 5.8

)
105 × 148
2.17 7∶5 (√2) ISO 216
4R KG 6 inches 4 × 6
102 × 152
2.16 3∶2 No
4 × 4 102 × 102
1.45 1∶1 No
4D 4
1
2

×6
114 × 152
2.43 4∶3 US
Zhou #4 ( 3.5 × 8.1

)
90 × 205
2.55 9∶4 (2.28) No
5 × 5 127 × 127
2.26 1∶1 No
B6 ( 5 × 7

)
125 × 176
3.15 7∶5 (√2) ISO 216
5R 2L 7″ 13 × 18
5 × 7
127 × 178
3.15 7∶5 (√2) ISO 1008
Zhou #3 ( 4.7 × 9.3

)
120 × 235 3.93

2∶1 (1.96)

5.8 × 7.9 A5 (
4.34
7∶5 (√2)

ISO 216

6R
8P

6 × 8
152 × 203
4.32

18 × 24
2

6P 20 × 25



203 × 254
7.20 ISO 1008


Letter
8


1

8.42 6PW
20 × 30

203 × 305 8.64
US?
A4 ( 8
1
4

× 11
2
3

)
210 × 297
8.70 7∶5 (√2) ISO 1008
24 × 30
9
1
2

× 12
240 × 305
10.3 5∶4 (1.26) ISO 1008
10R 4P 12 ” 10 × 12
254 × 305
10.8 6∶5 ISO 1008
4PW 10 × 14
1
2
254 × 368
13.0 3∶2 (1.45) Net
10R , S10R

10 × 15
28 × 36
14.7 5∶4 (1.27)
(

11

) 297 × 420
17.4 7∶5 (√2)

16.2

Net
11R , S11R 11 × 17 279 × 432 3∶2 (1.55) НАС;

305 × 406


17.3

12 × 18
19.4
3∶2

14R 14 × 17
355 × 431
17∶14 No
16R 40 × 50
16 × 20
406 × 508
28.8 5∶4 ISO 1008
16R, S16R 16 × 24
406 × 609
3∶2 No
A2 ( 16
1
2

× 23
1
3

)
420 × 594
34.8 7∶5 (√2) ISO 216
20R 50 × 60
20 × 24
508 × 610
43.2 6∶5 ISO 1008
20R, S20R 20 × 28

7∶5
22R

20 × 29.5
59∶40

No
609 × 800 21∶16
1
)
7∶5 (√2) ISO 216

24R, S24R 24 × 35.5
609 × 901
No United States for sizes 8″ or larger. 5R is twice the print size of 2R, 6R is twice the print size of 4R and S8R is twice the print size of 6R. 4D/6D is the new size for most consumer level digital cameras and Micro 4/3 cameras.

The American S8R or Japanese 6PW at 203 mm × 305 mm is the closest 3∶2 approximation to the A4 at 210 mm × 297 mm (√2∶1).

Dimensions from 7 ×

9
1
2

12 × 16

(4 3) and

9
1
2

× 12 inches (5 4) are used for black and white paper.

Standard photo sizes | obumage.net

photo format exact dimensions, see dimensions, px.
10 x 15 10.2 x 15.2 1205 x 1795
11 x 15 11.4 x 15.2 1347 x 1795
13 x 18 12.7 x 17.8 1500 x 2102
15 x 20 15.2 x 20.3 1795 x 2398
15 x 23 15.2 x 22.8 1795 x 2693
18 x 24 17.8 x 24.0 2102 x 2835
20 x 30 20.3 x 30.5 2398 x 3602
21 x 30 21.0 x 30.5 2480 x 3602
24 x 30 24.0 x 30.5 2835 x 3602
25 x 38 25.4 x 38.1 3000 x 4500
30 x 40 30.5 x 40.6 3602 x 4795
30 x 45 30.5 x 45.7 3602 x 5398
30 x 60 30.5 x 61.0 3602 x 7204
30 x 90 30.5 x 90.0 3602 x 10630

You can use the table data to independently prepare files for photo printing
.

To understand the principle of constructing a standard series of formats, you need to know two things: the established aspect ratio
2:3 and 3:4 images. and the use of non-metric units in Europe. The unit of measurement is the English inch since 1958, equal to 2.54 cm.

All darkrooms
printed on roll photo paper
, having a standard range of widths: 102 mm, 127 mm, 152 mm, 178 mm, 203 mm, 210 mm, 254 mm, 305 mm. Accordingly, in inches, this row consists of integers: 4″, 5″, 6″, 7″, 8″, 8.27″, 10″, 12″. The paper is cut to the required length based on the required proportions. Paper width 210 mm. in inches has a “crooked” value and is produced specifically for printing in printing formats A4 210x297mm.

File sizes in pixels are calculated based on the characteristics of the printing equipment. Laser exposure system 300dpi. – printing photos with a resolution of 300 pixel/inch (dots per inch). Knowing the dimensions in inches, you can simply multiply the linear dimensions by the resolution of the printing device. The resulting value will be the minimum required to print a high-quality photo.

Attention! Increasing the number of pixels in width and height in any graphics editor will NOT improve the image. When digitally printing photos on our equipment
It is necessary to remember that a small part of the image (1-2 mm or 12-24px on each side) will be cut off on the print.

Interestingly, the standard photo size 30×45 coincides with standard paper size
A3. This is explained by the use of imported technology in domestic production, which involves the use of papers with dimensions corresponding to the metric system of measures.

Today, many people prefer to store memories not in the form of photographs, but in photo books
. Our workshop produces photo books both separately and as a set with a photo box
.

Photo size chart for printing. standard photo sizes. Photo size table. centimeters (cm), inches, pixels in 300dpi resolution. – tables

Table of photo sizes for printing. Standard photo sizes. Photo size chart. Centimeters (cm), inches, pixels in 300dpi resolution.

The colors indicate the main = most common sizes.

Table of photo sizes for printing. Standard photo sizes. Photo size chart. Centimeters (cm), inches, pixels in 300dpi resolution.
Standard Size in inches Photo paper actually, mm Pixels at 300 dpi
9×13 3,543 x 5,117 89×127 1063×1535
10×15 3.937 x 5.907 10.2×15.2 1181×1772
13×18 5,117 x 7,087 12.7×17.8 1535×2126
15×20 5,907 x 7,873 15.2×20.3 1772×2362
15×21 5,907 x 8,267 15.2×21.6 1772×2480
15×22 5.907 x 8.66 15.2×22.8 1772×2598
15×30 5.907 x 11.81 15.2×30.0 1772×3543
15×38 5.907 x 14.96 15.2×38.1 1772×4488
15×45 5,907 x 17,717 15.2×45.7 1772×5315
18×24 7.087 x 9.45 17.8×24.0 2126×2835
18×25 7,087 x 9,843 17.8×25.4 2126×2953
20×25 7.873 x 9.843 20.3×25.4 2362×2953
20×30 7.873 x 11.81 20.3×30.5 2953×3543
25×38 9.843 x 14.96 25.4×38.1 3543×4488
30×40 11.81 x 15.747 30.5×40.6 3543×4724
30×45 11.81 x 17.717 30.5×45.7 3543×5315
30×90 11.81 x 35.433 30.5×91.4 3543×10630

Photo formats and sizes for printing. comparison of photo formats with A4

We are often asked: – “Can you print A4 photos?”

Of course, we can print photos in almost any size, but this issue requires clarification.

Photo paper formats differ from international ISO formats, but most often in everyday life we ​​operate with terms and sizes that are familiar to us, such as A4, Whatman paper, etc. Although photo paper formats and regular paper formats are quite similar, they are still different from each other.

Major photo formats have aspect ratios similar to those of modern digital cameras, 1:1.5 (2/3) or 1:1.33 (3/4). Standard international paper sizes have an aspect ratio of 1:1.4142, meaning they are not the same proportions. When printing on Noritsu minilabs, photo standards are used. The familiar photo frames and photo albums for storing photographs also meet photo standards.

This table shows the ratio of the photo formats that we print to standard paper.

Photo format we print Photo size in px Photo size in mm Aspect Ratio ISO standard ISO size in mm
10×15 1217×1807 103×153 2:3 ≈A6 105×148
15×21 1807×2492 153×211 3:4 ≈A5 148×210
20×30 2409×3614 204×306 2:3 ≈A4 210×297
30×40 3614×4972 306×421 3:4 ≈A3 297×420
30×45 3614х5410 306×458 2:3 ≈A3 297×420
30×60 3614×7217 306×611 1:2 ≈A2 420×594

Now let’s look at each of the photo formats in detail. The popular 10×15 format is 2 mm smaller on one side than standard A6, and 5 mm larger on the other. Therefore, if you need exactly A6, you should order a 15×21 photo and trim off the excess manually.

Below you see how the 10×15 format compares with the well-known A4.

A 15×21 photograph will be slightly larger than an A5 sheet. On one side by 5 mm, on the other by 1 mm. Therefore, if you need A5, feel free to order a 15×21 photo, you will cut off the excess.

Below you see the ratio of 15×21 to A4.

The 20×30 format is almost A4, but the photo is 6 mm smaller on one side and 9 mm larger on the other than A4. 20×30 and A4 are disproportionate.

Below is the ratio of a 20×30 photo to A4.

If you need A3, then choose a 30×40 photo. 30×40 is 9 mm on one side and 1 mm on the other more than A3. Feel free to order and cut it yourself =).

Below you see the ratio of 30×40 and A3.

Photo 30×45 larger than A3. This can be seen in the picture below.

It is difficult to compare a 30×60 photo with regular paper. 30×60 is significantly smaller than A2 (whatman paper) and significantly larger than A3. But this does not prevent 30×60 images from being popular among photographers.

Below you see the ratio of a 30×60 photo to A3.

Below is the relationship between photo formats.