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Thread started 08 Jul 2010 (Thursday) 15:23
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From 7D to 5D Mk II yes or no

 
jwcdds
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Jul 21, 2010 20:36 |  #31

ilumo wrote in post #10579587 (external link)
The greater the pixel density, the more magnification you have ( im not sure if that's the proper terminology). Have you ever tried live view at normal magnification ? And then look at it at 10x magnification? See how much more it shake it has? So the crop cameras typically have higher density/magnification so therefore you need more precision to take those tack sharp shots, especially at 100% crop.

But the same rule applies if you were to compare the 5D2 vs 5Dc. It's not a crop vs. FF argument.

And especially if you're taking photos with the composition/framing in mind, as my example illustrates, you can take the photo with the 7D/85, or choose the 5D2/135. And you'll still end up with more pixel-on-target with the 5D2 because it's 21mp vs. 18mp. In this scenario, the 5D2 should be more technique sensitive with the 3 extra megapixels to worry about.

I would hope most people take pictures and compose them by what they see in the viewfinder, and not looking saying to one's self, "Well, since I'm FF and plan to crop down to 1.6, I'd have less pixel density to deal with, but I'll deliberately shoot wider and I'll end up with a sharper resulting cropped image."

You frame it as best as you can (and sometimes you're focal length limited) but you do whatever you can to minimize cropping later.


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bohdank
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Jul 23, 2010 10:47 |  #32

I agree,,,, all this talk about cropping down to 1.6 sensor size and comparing has no bearing on real life, imo. Smoke and mirrors. Nobody shoots with that expectation. Use whatever lens you need to get the framing you want at the distance you are are shooting. End of story.

I am contemplating, again, getting a 7D as a second body which could conceivably allow me to sell the 300mm. I still haven't seen, or don't recall seeing, a comparison to the 5DII that didn't go into cropping images to compare or other diversions from the actual comparison... both the 5DII and 7D, same framing, and no websizing which can hide all kinds of noise issues. Primarily interested at ISO3200 which is where/why I would be using 2 bodies.


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Jul 23, 2010 11:02 |  #33

Too bad I don't have a free 5d2 to borrow around me. Else I'd take a few test shot for you and post the full rez. I'd take one with the 7D + 85, and then take a similar shot with the 5d2 + 135.

But I think all in all (and as most would expect), the 5d2 should have at least 1/2 if not full stop noise advantage and being sharper off the bat.


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Jul 23, 2010 11:18 |  #34

A full stop difference I can't use most of the time. Depends on the show and lighting.

I might have to start thinking about replacing my F4 lenses, 17-40, 70-200.


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Jul 23, 2010 11:40 |  #35

jwcdds wrote in post #10579314 (external link)
Perhaps your salvation will come in the form of a 5D3 (or mythical 3D) w/ improved AF. One can only hope, including myself. :lol:

Honestly though, most of the time when I really care about AF is when I'm shooting a moving subject far enough away that I want/need the "reach" of a 1.6X crop camera. Thus, even though I sometimes **** about the 5d2's AF, most of the time I'd rather have really good AF in a 1.6X crop camera than in a FF camera.


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Jul 23, 2010 11:44 |  #36

Well, I'd prefer more selectable AF points (and wider spread for FF) in order to minimize the need to focus and recompose. That is certainly what I appreciate the most out of the 19-point of the 7D. I can frame and shoot, without needing to focus+recompose, or just center + crop later.


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rickp1
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Jul 23, 2010 12:05 as a reply to  @ bohdank's post |  #37

Well the 5D MkII rental came in yesterday and I did a bit of shooting with it and the 7D.
There's definitely a difference in sharpness. It's the type of sharpness I would expect from most bodies to tell the truth. Especially when one pays $1500+ for a body.
Here are some shots I took with both. I did nothing but crop for posting purposes and nothing else. All images are cropped at 50%.
All images where shot at ISO 200 and a 70-200mm f2.8 lens.

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7D

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Jul 23, 2010 12:56 |  #38

rickp1 wrote in post #10589941 (external link)
....
All images where shot at ISO 200 and a 70-200mm f2.0 lens....

That would be a sweet, but very heavy lens, if it existed. ;)


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Jul 23, 2010 12:58 as a reply to  @ rickp1's post |  #39

Your first shots are hard to tell because it looks like the focusing point is diffrent. Like the leaf in the 7D shot looks sharp, but the background is blurry, and on the 5D shot your background is sharp

Not a good comparison on either picture really. Try shooting something else that doesnt have something blocking your view.


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Jul 23, 2010 12:59 |  #40

Hm... I don't know if I'm imagining things but oddly enough, seems like the 7D photos posted here have more shallow DoF than the 5D2 images. o.O


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Jul 23, 2010 13:45 |  #41

jwcdds wrote in post #10590292 (external link)
Hm... I don't know if I'm imagining things but oddly enough, seems like the 7D photos posted here have more shallow DoF than the 5D2 images. o.O

Yeah thats what I meant, but at the same time the focusing point looks diffrent.


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Jul 23, 2010 13:46 |  #42
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I don't know what's the issue with 7D & sharpness. Is it the body or the lens, because I'm thinking it might be your glass is not calibrated.
My 5DII is just as sharp as the 7D used to be, and I don't notice any differences in sharpness. However, high ISO handling & shallower DoF is where it shines the most.


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rickp1
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Jul 23, 2010 14:01 |  #43

The focus point is the exact same on all images and all my lenses just got back from canon and getting calibrated. Due to the sharpness issue if the 7D i sent everything to them in hopes that it would resolve the issue. The camera did have an AF problem that was corrected but the lenses were fine.

This is the issue I'm having with this camera, all of this should be a NON Issue!!!!
Here are 2 more images. The focus point is the top of the lamp. Same lens cropped to 50%

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7D
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Jul 23, 2010 14:04 |  #44

Hm? What issue did you have w/ the 7D images that you posted during the comparison? I thought they all looked rather sharp (to where I thought you focused). It's just the DoF seemed thinner than the 5d2, which shouldn't have been the case.


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Jul 23, 2010 14:14 |  #45

Really???? You thing the 7d images are sharp?? I really don't, even my fiancee doens't think so. We look at the images and think "they don't look too sharp" that's not the case with the 5D.


I'm really thinking about springing for a 5D and forgetting about all this. I would really miss the features of the 7D though. I have to say I love the fps and the focus system. Even if I keep it as a back up I just don't see using both and getting rid of it would help pay for the 5D. Decisions, decisions!!!
But at the end of the day IMO the point of taking a picture is to capture it as sharp as possible and the 5d is superior.

R.


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