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Thread started 02 Jan 2013 (Wednesday) 11:30
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High ISO performance of 6D and 5Diii

 
archer1960
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Jan 02, 2013 11:30 |  #1

I'm considering moving to a FF body for improved high ISO noise performance for astrophotography, and am trying to compare ISO noise performance vs price for the various options.

On my current body (T1i/500D), 800 is where I consider the noise to be usually acceptable without additional NR work, and I'm trying to figure out how high I can go on the 6D with the same noise level.

Same question for the 5Diii and 1DX if anybody knows the answer.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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DagoImaging
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Jan 02, 2013 11:32 |  #2

I consistently use iso 6400 on my 5Dmk3 and could use 12,8 if needed.


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gonzogolf
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Jan 02, 2013 11:33 |  #3

The problem here is defining acceptable. Its like defining what tastes good. Its different for everyone. There is nothing in your post to indicate an actual threshold other than the performance of an older rebel and even that depends greatly on your own tolerance.




  
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facedodge
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Jan 02, 2013 11:38 |  #4

If ISO 800 is your limit on the T1i, ISO 3200 on the 5d or 1d will likely be your limit.


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form
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Jan 02, 2013 11:40 |  #5

https://photography-on-the.net …p?p=15434973&po​stcount=47

What would you be using the ultra-high ISO for? Print? Personal sharing?


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archer1960
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Jan 02, 2013 12:09 |  #6

gonzogolf wrote in post #15435077 (external link)
The problem here is defining acceptable. Its like defining what tastes good. Its different for everyone. There is nothing in your post to indicate an actual threshold other than the performance of an older rebel and even that depends greatly on your own tolerance.

That's why I said that I wanted to know what ISO on the 6D/5Diii would have the same noise level as 800 on my T1i. Obviously that requires somebody to have access to both bodies (or at least one with a similar sensor), to compare it to the newer bodies.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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archer1960
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Jan 02, 2013 12:11 |  #7

form wrote in post #15435099 (external link)
https://photography-on-the.net …p?p=15434973&po​stcount=47

What would you be using the ultra-high ISO for? Print? Personal sharing?

Printing if I get a good-enough shot, but mostly posting large images to astronomy forums and sending to fellow astronomy hobbyists. Definitely not just facebook-level pictures.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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archer1960
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Jan 02, 2013 12:13 |  #8

facedodge wrote in post #15435091 (external link)
If ISO 800 is your limit on the T1i, ISO 3200 on the 5d or 1d will likely be your limit.

Ok, that's the kind of information I'm looking for. 2 stops is a significant gain; it cuts a 4-minute exposure down to 1 minute, which makes the mount setup much easier.

Do you think the 6D would be about the same?


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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Jan 02, 2013 12:22 |  #9

I've only read this since I don't own either a 5d3 or a 6d....But from the tests I've seen, the 6d has unmatched low light level performance. It blows the 5d3 out of the water in that regard.


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Jan 02, 2013 13:02 |  #10

ptcanon3ti wrote in post #15435274 (external link)
I've only read this since I don't own either a 5d3 or a 6d....But from the tests I've seen, the 6d has unmatched low light level performance. It blows the 5d3 out of the water in that regard.

Don't believe everything you read on the interwebs :D


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gonzogolf
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Jan 02, 2013 13:18 |  #11

archer1960 wrote in post #15435226 (external link)
Ok, that's the kind of information I'm looking for. 2 stops is a significant gain; it cuts a 4-minute exposure down to 1 minute, which makes the mount setup much easier.

Do you think the 6D would be about the same?

Do you shoot raw or jpg? Of the newer FF offerings the ISO performance seems to be gained through better .jpg processing as opposed to a tremendous improvement in the raw files. But all are going to be demonstrably superior to your rebel.




  
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bobbyz
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Jan 02, 2013 13:39 |  #12

ptcanon3ti wrote in post #15435274 (external link)
I've only read this since I don't own either a 5d3 or a 6d....But from the tests I've seen, the 6d has unmatched low light level performance. It blows the 5d3 out of the water in that regard.

Yup, yup. same way 5dmk3 picture quality blows away 5dmk2 out of the water and so on.:)


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reprazent
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Jan 02, 2013 13:50 |  #13

and the 5dc beats any crop sensor camera including the 7D. stop staring blindly at charts ala dxoops i nearly said the forbidden word :confused:


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davidc502
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Jan 02, 2013 16:09 |  #14

See below link...

ISO comparisons between the T1i and the 5d2.

There seems to be about a half "stop" difference in ISO between the two. So, I would say a 1stop difference at some ISO's using the 6d or 5d3 would be expected.

http://thedigitalpictu​re.com …al-SLR-Camera-Review.aspx (external link)

I've your max is 800 ISO on the T1i then you should feel comfortable (no problems) shooting 1600 using the 6d or 5d3.


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MintMark
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Jan 02, 2013 16:16 |  #15

archer1960 wrote in post #15435065 (external link)
I'm considering moving to a FF body for improved high ISO noise performance for astrophotography, and am trying to compare ISO noise performance vs price for the various options.

On my current body (T1i/500D), 800 is where I consider the noise to be usually acceptable without additional NR work, and I'm trying to figure out how high I can go on the 6D with the same noise level.

Same question for the 5Diii and 1DX if anybody knows the answer.

I do astrophotography too, first with a 1000D, mostly with a 60D and I've just bought a 6D. I haven't had a chance to directly compare 60D and 6D for long exposures under the sky, but I have had one go with the 6D... yet to process the images though.

But I have done some direct comparisions between 60D and 6D around my house on this dark and dingy day... the results fit with what you can see on the internet. The 6D is a stop and a bit better than the 60D. Have you looked at the noise comarisons on http://www.the-digital-picture.com …al-SLR-Camera-Review.aspx (external link)? My results are like that... 6D 12800 and 60D 6400 are both about equally "colourful". I was down at 800 for my bright skies, so nice and clean.

The 6D seems to be a touch better than the 5DIII, but I have no direct experience.

Other astro considerations...

  • If you're on a mount, lighter is better. Swivel screen is nice too...
  • It's a bigger sensor, so if you're on a telescope then there will be vignetting and image circle problems, non-flat fields... I have yet to try this.
  • It has an N3 type wired remote connector... you might need a new intervalometer.
  • No clip in light pollution filters for full frame (as far as I know).
  • It might be good to control it remotely using EOS utility over wifi... with an AF camera lens this would give you fine control of focus. And you can monitor things from indoors. But it might be a big battery drain. Yet to try.
Anyway, some food for thought...

Mark

  
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High ISO performance of 6D and 5Diii
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