Just an UPDATED ESTIMATED RECORDING TIME TABLE for the
Canon R5 to correct an earlier post of mine where I wrongly multiplied using bytes instead of bits (Oooops! My Bad!) This is for the Canon R5 camera for DCI 8K video recording at FULL Uncompressed RAW, 3:1 Compressed RAW and 5:1 Compressed RAW recording formats:
DCI 8K FULL RAW video at 10 Bits per colour channel (4:4:4 colour sampling at 30 bit colour) is 8192 by 4320 pixels and 35,389,440 pixels (35.38 megapixels) and 132,710,400 bytes per video frame = 3,981,312,000 bytes per second at 30 fps FULL RAW (or 3.98 Gigabytes per second!) or 238,878,720,000 bytes per minute (238.87 gigabytes per minute) of FULL uncompressed RAW recording time.
Size of CF Express Cards in Gigabytes and Calculated RAW Recording Times in minutes and seconds at 10 bits per RGB/YCbCr colour channel aka 30 bit colour:
FULL RAW using typical mathematically lossless bit-wise 2:1 LZW compression:
128 gigabytes = 50 sec
256 gigabytes = 1 min 40 sec
512 gigabytes = 3 min 20 sec
Compressed 3:1 Ratio RAW in minutes and seconds:
(algorithms used are variable but visually lossless which means the video looks really good)
128 gigabytes = 3 min 45 sec
256 gigabytes = 7 min 30 sec
512 gigabytes = 15 minutes
Compressed 5:1 Ratio RAW in minutes and seconds:
(algorithms used are variable but visually lossless which means the video looks really good)
128 gigabytes = 6 min 5 sec
256 gigabytes = 12 min 10 sec
512 gigabytes = 24 min 20 sec at DCI 8K or 98 minutes at DCI 4K at 24 to 30 fps or about 49 minutes at 4K 60fps!
If you use an external drive using a typical video-grade Four Terabyte drive, you will get about 195 minutes or 3 and a quarter hours of video at 30 fps 8K using 5:1 RAW.
I should note these are worst-case scenarios, so I expect there SHOULD BE a leeway of an extra 25% on top of the above times when filming typical action or sports video where detail is fairly limited and where motion tends to be linear.
For still images at the LIKELY 45 megapixels that will be used for this camera in stills mode, we can expect to store about about 10,500+ still images (3:2 aspect ratio) on a single 128 Gigabyte CF express card at the typical 5:1 compression ratio of the HEIF image file format.
Sooooooo, it looks like
Canon has done AN OUTSTANDING JOB on FULL RAW and COMPRESSED RAW recording times for the larger 256 and 512 gigabyte CF-Express cards!
If you record only DCI 4K video multiply ALL of the above times BY FOUR !!!!!
AND .... I should note that if you use 4:2:2 H.265 DCI 8K (8192 x 4320 pixels) interframe compressed video recording, you SHOULD be able to get a fairly high record time using 50 to 150 Group-of-Frame (GOP) settings which means on a 128 gigabyte CF-Express card you should be able to get about 20 minutes minimum at the high quality pro-level video settings.
For the 512 Gigabyte cards, that's at least 50 minutes of very high quality 30 fps H.265 DCI 8K video and up to 200 minutes of 30 fps DCI 4k video or 100 minutes of 60 fps DCI 4K video and somewhere between 35 to 50 minutes of 4K at 120 fps (120 fps is very hard to compress in real time!).
That's pretty good as DCI 8K video record times for full 8192 by 4320 pixel video resolution and DCI 4K 4096 by 2160 pixel video! I should note though that H.265 is rather finicky on CONTENT DETAIL and EXCESSIVE MOTION, so your recording time mileage may vary! DO EXPECT A PLUS OR MINUS 25% leeway on either side of my above estimated 8K video record times!
This will get Sony's Goat to No End !!!
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