topic Re: Dynamic range of exposure for t3i/600d in EOS DSLR & Mirrorless Cameras

Dynamic range of exposure for t3i/600d

gsunda01 — Sun, 09 Nov 2014 12:31:58 GMT

can someone help me by providing the dynamic range of exposure for t3i. (dynami range - Lowest and highest exposure range in terms of f-stops for a given scene)

Re: Dynamic range of exposure for t3i/600d

TCampbell — Sun, 09 Nov 2014 15:54:01 GMT

See: http://www.dpreview.com/reviews/canoneos600d/12

Their testing seems to indicate that it's about 5 stops below and 3&1/3rd stops to 4&1/3rd stops above (depending on if highlight tone priority was swtiched on.)

I think those were JPEG tests (I didn't see any indication of RAW and they usually go out of their way to let you know when they're doing RAW.) There is substantially more bit depth in RAW so it's likely to do a bit better if you shoot RAW.

If you're shooitng anything where you are worried about dynamic range then you should probably be shooting RAW anyway.

Re: Dynamic range of exposure for t3i/600d

gsunda01 — Sun, 09 Nov 2014 16:00:54 GMT

Thank you

Re: Dynamic range of exposure for t3i/600d

ebiggs1 — Sun, 09 Nov 2014 16:32:43 GMT

If you are from the film days and expect DR to be the same, it is not. The numbers used to express it may be the same but how a sensor and film work is not. I know I struggled when I first swirched to digital because I was so used to film specs.

IMHO, always use RAW. There really isn't a good reason not to.

Re: Dynamic range of exposure for t3i/600d

TCampbell — Sun, 09 Nov 2014 16:52:28 GMT

Just from a simple math perspective it's easy to understand why RAW is the better way to go.

The JPEG standard uses 8 bits per color channel (that's the bit-depth). RAW is more of a "concept" than a specific standard so this can vary based on camera model, but your Canon (and all currently marketed Canon cameras) uses 14 bits per color channel.

8 bits means you get 256 levels of that color. 14 bits provides 16,384 levels per channel (that's 64 times more bit-depth than JPEG).

The trade-off is that the camera does no prcoessing on RAW images that would cause a loss of original data. So there's no in-camera sharpening or de-noising. There's no in-camera white-balance or color adjustment, etc. All of that is handled by the computer. But many image processing programs optimized for RAW processing will do that on-the-fly as you import your images from camera (meaning you wont miss the fact that the camera isn't doing it for you because in the end you just important your images and by the time you look at them these adjustments have already been applied.

Re: Dynamic range of exposure for t3i/600d

gsunda01 — Mon, 10 Nov 2014 03:29:01 GMT

Thanks for the reply.
I use RAW all the time.

My question was related to knowing the dynamic range , in terms of f-stops , for T3i so that i can use this in conjunction with exposure compensation and expose to the right to get optimal exposure for a specific scene.

gopal

Re: Dynamic range of exposure for t3i/600d

vardor — Fri, 22 Jul 2016 17:46:51 GMT

I'm a beginner, so I am probably confused about using the RAW footage when it comes to my computer.

If I select RAW in my t3i, then put the video footage into FCPX, on my mid-2011 iMac, will my computer be able to handle the size of the footage? Will my FCPX (or DaVinci Resolve 12 if I choose) convert it to Prores ?

My iMac specs:

I also have a Seagate Backup Plus 2 TB external hardrive

2.5 GHz Intel Core i5

4 GB 1333 MHz DDR3

My goal is to maximize the Dynamic Range of the camera, IF the computer can handle it. Till now, ive been videoing in H.264

Thanks!

Re: Dynamic range of exposure for t3i/600d

kvbarkley — Mon, 25 Jul 2016 13:46:05 GMT

Raw does not apply to video

Re: Dynamic range of exposure for t3i/600d

RobertTheFat — Mon, 25 Jul 2016 15:45:00 GMT

@vardor wrote:
I'm a beginner, so I am probably confused about using the RAW footage when it comes to my computer.

If I select RAW in my t3i, then put the video footage into FCPX, on my mid-2011 iMac, will my computer be able to handle the size of the footage? Will my FCPX (or DaVinci Resolve 12 if I choose) convert it to Prores ?

My iMac specs:
I also have a Seagate Backup Plus 2 TB external hardrive

2.5 GHz Intel Core i5
4 GB 1333 MHz DDR3

My goal is to maximize the Dynamic Range of the camera, IF the computer can handle it. Till now, ive been videoing in H.264

Thanks!

Does anybody still doubt that there's a need for a separate "Video" board in this forum?

Re: Dynamic range of exposure for t3i/600d

kvbarkley — Mon, 25 Jul 2016 15:46:50 GMT

Maybe so, but I bet this poster would have still piled on in the wrong topic!

Re: Dynamic range of exposure for t3i/600d

kvbarkley — Mon, 25 Jul 2016 15:50:49 GMT

I guess I should point out that there are some high end cameras that shoot in RAW, like the Canon C series, but that does not apply to Rebels!

Re: Dynamic range of exposure for t3i/600d

RobertTheFat — Mon, 25 Jul 2016 15:53:38 GMT

@kvbarkley wrote:
Maybe so, but I bet this poster would have still piled on in the wrong topic!

But it would be the wrong topic in a board that many of us probably wouldn't read.

Re: Dynamic range of exposure for t3i/600d

kvbarkley — Mon, 25 Jul 2016 15:56:39 GMT

Not that it matters, but I guess it was not clear. I am assuming that the drive by poster would have posted in the exact same place, he just went for any ol' post that mentioned dymanic range, whithout regard to relevance. In fact, I suspect that this post actually belongs down in the EOS Cinema topic, where it is relevant.