- 2.39 1 aspect ratio calculator full#
- 2.39 1 aspect ratio calculator iso#
In crop mode 10bit helps you achieve a higher resolution than is possible using the full width of the sensor, but the resulting 3.72x crop is enormous making it only suitable for telephoto shots. The 7D has a 1.6x crop sensor as is standard for Canon APS-C bodies, which equates to approximately Super 35mm in the cinema world.
2048 x 930 – 4.07x crop mode (14bit 2.2:1)ġ4bit at the maximum resolution provided by the sensor is a go-go on the 7D. This camera is DIGIC IV so lacks 10bit raw support. 2.39 1 aspect ratio calculator iso#
It is noisier at ISO 1600 and above, but the noise has a film-like grain which is actually very pleasing. Without the anti-aliasing filter, the 5D Mark II will show moire, but it looks just as detailed as its more expensive cousin. The crop mode does not give you as much as a resolution bump as on the 5D Mark III, being capped to 2144 x 1076. The image from the 5D Mark II looks identical to the 5D Mark III if you have the VAF anti-aliasing filter installed from Mosaic Engineering. In the 4K/3K/2K crop mode the 5D Mark III is capable of a whopping 3584 x 1320 (10bit) but only for 5 seconds. Drop to 2560 x 1090 and you have continuous 10bit raw, but quite a hefty 2.25x crop factor from the full frame sensor.
1920 x 1080 – full frame (14bit, use 12bit or 10bit for more bullet proof reliability). Here are the maximum resolutions for continuous raw recording for all cameras: That’s why switching to 10bit raw video on these cameras is so advantageous. Note however, that older DIGIC IV (4) cameras like the 5D Mark II, 7D and 50D do not have 10bit-12bit capability, only uncompressed 14bit raw. No problem on a 5D Mark III or 7D but not possible on the mid-range cameras with their 40MB/s SD card controllers, no matter how fast your SD card is. (On the 70D this jumps to 10 seconds, because the buffer memory is 200MB). Raw video at this bit depth and resolution needs 60MB/s write speeds on the camera to the card. On the 100D which has a small 124MB buffer, you can get 6 seconds of 14bit RAW video at 1728 x 864, but it’s not realistic for mosts shoots to work like this. Regardless of the speed of the camera writing to the card, you can get a few seconds (usually up to 5 seconds) of raw video to into buffer memory before it fills up.Īfter it fills up, the card must keep up with the size of the recording, otherwise the camera chokes and stops. The EOS M has the smallest buffer, the 5D Mark III the largest. Maximum recording resolutions and crop factorsĬanon cameras have a 100MB to 275MB size buffer for recording raw images. Class 1 – Fast cameras (Compact Flash 1000x)Ĭlass 2 – Mid-range cameras (40MB/s SDHC class 10)Ĭlass 3 – Slow cameras (older 20MB/s SD card controller) The information on this page was put together using personal experience of owning the cameras and the superb Magic Lantern Raw Calculator to fill in the gaps in my memory. The best cheap cameras are the 700D and 100D / SL1 at approx. The 70D also has another advantage over the 5D Mark III and 7D, in that it has an articulated screen. 
The 7D is the best value for money at £350 used and the 70D being unique for being the only one with Dual Pixel AF, for a bargain used price of £550.
Of the current cameras the 5D Mark III is the most capable especially for uncompressed 14bit shooting, but it’s also the most expensive for upwards of £1500 used. Magic Lantern have now implemented 12bit and 10bit raw recording which decreases the date rate and acts as a form of raw compression. Raw video has a large data rate especially in 14bit, so the speed at which the cameras can write to the card is the main factor determining resolution. Which should you use and what image quality can you expect?
There are 3 performance classes of Canon camera for raw video.
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