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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 20 Jan 2013 (Sunday) 08:55
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7D vs 5D3 images :) suprising results

 
Talley
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Jan 20, 2013 08:55 |  #1

Did some more testing. I was actually suprised to see the 7D hold it's own outside in low iso.

7D with Sigma 70-200 2.8 OS vs. 5D3 with 70-300L

This shot taken at same distance, 7D at 200mm F4 and 5D3 at 300mm F5.6. DOF calculators showed this to be very similar DOF.
7D on left and 5D on right (100% crop)

IMAGE: http://nitrousdepot.net/POTN/7Dvs5D3football.jpg
IMAGE: http://nitrousdepot.net/POTN/7dvs5D.1.jpg
IMAGE: http://nitrousdepot.net/POTN/7dvs5D.4.jpg

Same setup. 7D at 5.6 200mm and 5D3 at 300mm 5.6
5D3 on left and 7D on right (50%crop)
IMAGE: http://nitrousdepot.net/POTN/5D3vs7Dpaper.jpg
IMAGE: http://nitrousdepot.net/POTN/7dvs5D.2.jpg
IMAGE: http://nitrousdepot.net/POTN/7dvs5D.3.jpg

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jwcdds
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Jan 20, 2013 09:28 |  #2

Yeah... good lighting where you can get away with shooting at low ISO is not really a good way to test these cameras. Even a p&s would do fairly well against a DSLR under such conditions.


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Mark ­ Kemp
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Jan 20, 2013 09:29 |  #3

Why the surpise? 18M pixels vs 22m is not a massive difference and at low ISO noise is not an issue. There are no really bright highlights so you aren't pushing the dynamic range. As you expected the sensor size affects DOF but not a great deal in those conditions. There shouldn't be a big diffference in these images and there isn't.




  
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BrandonSi
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Jan 20, 2013 09:29 |  #4

N/M, I misunderstood the example.. :) Thought you wrote low-light, not low-iso..


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Talley
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Jan 20, 2013 09:47 |  #5

BrandonSi wrote in post #15511423 (external link)
N/M, I misunderstood the example.. :) Thought you wrote low-light, not low-iso..

I also have some that I need to post of low light 3200 f2 using a 85 1.2 II on each. There is no match haha.

I was under the impression that FF offered more detail but comparing a bunch of low ISo shots outside I really didn't see it. Now I'm leaning more toward a 7D/6D combo because when I do outdoor sports of kids I need reach but inside low light I find myself using the centerpoint anyway because its 2.8 sensitive.


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CincyTriGuy
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Jan 21, 2013 15:12 |  #6

Mark Kemp wrote in post #15511422 (external link)
Why the surpise? 18M pixels vs 22m is not a massive difference and at low ISO noise is not an issue. There are no really bright highlights so you aren't pushing the dynamic range. As you expected the sensor size affects DOF but not a great deal in those conditions. There shouldn't be a big diffference in these images and there isn't.

Agree. My little EOS-M mirrorless would probably be just as good, if not better, than your 7D under these conditions. Which reminds me I need to do some side by side stuff like this of the EOS-M and 5D3.


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Winco
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Jan 21, 2013 15:55 |  #7

Yes, interesting comparison between those two completely different lenses shot at different apertures!

I like the 70-200 f2.8l is mk2, I'm sure that will give an interesting comparison again.




  
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Higgs ­ Boson
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Jan 21, 2013 15:58 |  #8

Talley wrote in post #15511466 (external link)
I also have some that I need to post of low light 3200 f2 using a 85 1.2 II on each. There is no match haha.

I was under the impression that FF offered more detail but comparing a bunch of low ISo shots outside I really didn't see it. Now I'm leaning more toward a 7D/6D combo because when I do outdoor sports of kids I need reach but inside low light I find myself using the centerpoint anyway because its 2.8 sensitive.

you have much to learn, grasshopper.


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tzalman
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Jan 21, 2013 17:01 |  #9

I was under the impression that FF offered more detail but comparing a bunch of low ISo shots outside I really didn't see it.

You were wrong. The resolution on the 5D3 sensor is 4100 ppi and on the 7D it is 5900 ppi. The 7D resolves much more detail. But when you make a print you lose resolution because you have to enlarge the optical image on the sensor. Make a 24x36 inch print; the 5D3 image becomes 164 ppi (4100/25.4, the amount of enlargement) and the 7D image is 145 ppi (5900/40.6). The difference may not be apparent at normal viewing distance, but it will be seen close up.


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Elfstop
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Jan 21, 2013 17:05 |  #10

Talley wrote in post #15511336 (external link)
Did some more testing. I was actually suprised to see the 7D hold it's own outside in low iso.

7D with Sigma 70-200 2.8 OS vs. 5D3 with 70-300L

This shot taken at same distance, 7D at 200mm F4 and 5D3 at 300mm F5.6. DOF calculators showed this to be very similar DOF.
7D on left and 5D on right (100% crop)
QUOTED IMAGE
QUOTED IMAGE
QUOTED IMAGE

Same setup. 7D at 5.6 200mm and 5D3 at 300mm 5.6
5D3 on left and 7D on right (50%crop)
QUOTED IMAGE

Why you trying to make them 5D3 owners mad...lol JK.




  
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Allan.L
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Jan 21, 2013 17:05 |  #11

Bad camera comparison, good lens comparison, the L spanks the sigma.


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Talley
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Jan 22, 2013 06:15 |  #12

Higgs Boson wrote in post #15516821 (external link)
you have much to learn, grasshopper.

Ok... explain then, I'm willing to learn.

tzalman wrote in post #15517090 (external link)
You were wrong. The resolution on the 5D3 sensor is 4100 ppi and on the 7D it is 5900 ppi. The 7D resolves much more detail. But when you make a print you lose resolution because you have to enlarge the optical image on the sensor. Make a 24x36 inch print; the 5D3 image becomes 164 ppi (4100/25.4, the amount of enlargement) and the 7D image is 145 ppi (5900/40.6). The difference may not be apparent at normal viewing distance, but it will be seen close up.

This is very interesting.

Allan.L wrote in post #15517112 (external link)
Bad camera comparison, good lens comparison, the L spanks the sigma.

I don't see any spanking. The photos are extremely close. With some of the other tests we did and compared we both agree'd that the Sigma was sharper at F4 then his lens was at 5.6 and his was pretty darn sharp at 5.6. I used my FOCAL PRO softwared and did the aperture test and it showed same sharpness at 5.6 as it did all the way through F11.


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Higgs ­ Boson
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Jan 22, 2013 07:12 |  #13

Talley wrote in post #15519014 (external link)
Ok... explain then, I'm willing to learn.

You want me to teach you photography in one post? For FREE??:D


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steve75
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Jan 22, 2013 09:32 |  #14

From looking on my phone, the 5d3 pics look better in both examples.... colours look better, the reds in the newspaper look more natural from the 5d. The differences could be alot to so with the lenses used though and I am only looking on my phone so not an ideal way to view the pics....


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Jan 22, 2013 11:29 |  #15

I'm not sure what you were expecting to see here. Virtually any DSLR from any company, and virtually any mirrorless from any company is probably going to fare well in this test. You've selecting something that isn't the sweet spot of either camera, and something that isn't hard to do by any camera, as a point of comparison.

If you want to test these two against each other, I'd maybe compare bird in flight images of small birds, requiring some cropping to match focal length of the glass vs. indoor extremely low light action shots. I expect you'd find the 7D excels at the first scenario and the 5D3 excels at the second. I bought the 5D3 primarily to do indoor sports, and as a general use camera. If I was primarily a birder, I would have probably bought a 7D for birding and as a general use camera. You don't compare in the general use case.


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7D vs 5D3 images :) suprising results
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