Circle of Confusion
Find the circle of confusion for any camera sensor from its diagonal, using the d/1500, Zeiss d/1730 or d/3000 criterion. Full frame gives 0.029 mm.
Photography Planning
5 tools
Which Photography Planning tool do you need?
| Tool | What it answers |
|---|---|
| 1:1 Calculator | A 1:1 crop is a square whose side equals the shorter edge of the original frame. |
| 16:9 Calculator | A 16:9 frame is 16 units wide for every 9 units tall, so height = width × 9 ÷ 16 and width = height × 16 ÷ 9. |
| 4:3 Calculator | For a 4:3 frame, multiply the width by 0.75 to get the height, or the height by 4/3 to get the width. |
| Circle of Confusion | The circle of confusion is the largest blur spot that still looks sharp in the final image. |
| Dynamic Range Calculator | Sensor dynamic range is the full-well capacity divided by the read noise, both in electrons. |
All tools
Dynamic Range Calculator
Turn full-well capacity and read noise into sensor dynamic range in stops and dB, compare several cameras, and check the headroom against a scene in EV.
4:3 Calculator
Find the missing side of a 4:3 frame from its width, height or diagonal. A 1024-pixel width gives 768 pixels of height; a 20-inch screen is 16 × 12.
1:1 Calculator
Find the largest 1:1 square crop of a photo from its pixel width and height, with the centred offset, megapixels kept and share of the frame lost.
16:9 Calculator
Find the missing side of a 16:9 frame from its width, height or diagonal. 1920 px wide gives 1080 px tall; a 55-inch screen is 47.94 × 26.96 in.