Understanding aspect ratios and pixel dimensions:
The first thing you need to understand is the aspect ratio. In simple terms, it refers to the horizontal and vertical dimensions of your image. You can also use this online aspect ratio calculator.
The most common aspect ratio for prints is 1.50:1 which yields the greatest diversity for prints. It is also important to note that the smallest resolution one should use is 150 dpi. For best results, I suggest 300 dpi.
Here’s a table you can use for 1.50:1 aspect ratios:
- 4×6 600×900 1200×1800
- 8×12 1200×1800 2400×3600
- 10×15 1500×2250 3000×4500
- 12×18 1800×2700 3600×5400
- 16×24 2400×3600 4800×7200
- 20×30 3000×4500 6000×9000
- 24×36 3600×5400 7200×10800
In case you were wondering why the 5×7 size is not here, it’s because this aspect ratio uses 1.40:1. So with that said, here are the values for this aspect ratio.
- 5×7 750×1050 1500×2100
The first column shows the print size. The second shows the pixel size when using 150 dpi resolutions. The third column shows the pixel dimensions at 300 dpi. Hopefully this helps you in understanding the many different print sizes we all use.
Cheers!
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