Is there a limit to the aspect ratio of photographic works?

It doesn't really matter. Just tell others when you develop it, and they will cut it for you ~

Also said ~ brother upstairs, this is not a composition, and it has little to do with the golden ratio ~

According to current standards, the size of photos is strictly regulated.

1 inch photo size should be 3.6cm×2.7cm；;

The size of the 2-inch ID photo should be 3.5cm×5.3cm；;

5 inch (the most common photo size) photo size should be/kloc-0 12.7cm×8.9cm；;

The 6-inch (international photo size) photo size is15.2cm×10.2cm;

The size of the 7-inch (enlarged) photo is17.8cm×12.7cm;

/kloc-the size of the 0/2 inch photo is 30.5cm× 25.4cm. ..

The normal error should be around1~ 2 mm. If the "gap" is too large, there is something wrong with the printing shop.

Comparison Table of Maximum Size of Digital Camera and Printable Photo

5 million pixels effective 49 15200, pixel 2560X 1920. The size of the developable photo is 17X 13, and the diagonal is 2 1 inch.

4 million pixels effective 387 1488, pixel 2272X 1704. The size of the developable photo is 15X 1 1, and the diagonal is 19 inch.

3 million pixels effective 3 145728, pixel 2048X 1536. The size of the developable photo is 14X 10, and the diagonal is 17 inches.

2 million pixels are valid at 1920000, and the pixel is 1600X 1200. The size of the developable photo is 1 1X8, and the diagonal is 13 inch.

1.3 million pixels effective 1228800, pixel 1280X960. The developable photo size is 9X6, diagonal 1 1 inch.

800,000 pixels, effective 786,432, pixel 1024X768. Developable photo size 7X5, diagonal 9 inches

500,000 pixels, 480,000 pixels, 800X600 pixels. The developable photo size is 5X4, and the diagonal is 7 inches.

300,000 pixels are effective, 307,200 pixels are 640X480. Developable photo size 4X3, diagonal 5 inches

5-inch photo with resolution of 800X600 (3X5)

6-inch photo (4X6), resolution 1024X768.

7-inch photo (5X7), resolution 1024X768.

8-inch photo (6X9), resolution 1280X960.