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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 24 Jul 2012 (Tuesday) 17:53
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5DM3 + 85 1.8 or 5D2 + 85 1.2L

 
x_tan
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Jul 24, 2012 23:14 |  #16

My 85L II was on 5D2 all time till I get 5D3.
I can't say anything about 85mm f/1.8 as I never use one.
But my pick will be 5D2 + 85L II as that combo served me well.


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questionmarc
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Jul 24, 2012 23:17 |  #17

miss a lot with a 5dmkii and 85L

or get a lot of keepers with the 5dmkIII

your choice

i shot with the 85L with the 60d and i had a lot of misses even with manual af selection for my portraits and i think the af on the 60d is a tad better than the 5d

personally i would get a 5dmkiii and an 85L =P


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laxlife1234
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Jul 24, 2012 23:23 |  #18

questionmarc wrote in post #14765581 (external link)
miss a lot with a 5dmkii and 85L

or get a lot of keepers with the 5dmkIII

your choice

i shot with the 85L with the 60d and i had a lot of misses even with manual af selection for my portraits and i think the af on the 60d is a tad better than the 5d

personally i would get a 5dmkiii and an 85L =P

You can't compare a 5DII to a 60D. FF vs. crop is a WHOLE other game. Even if the 60D has better focus lets say, it's like using a 135 on FF which is a whol other lens. When I moved from a T3i + 85L to 5DII + 85L the difference was outstanding. Not only that, but I NEVER missed focus, if I did it's because I moved or my subject did.

Not many people seem to realize that the DOF is close to 0.2" which barely leaves anything in focus, the slightest movement puts the whole image out of focus. Not only that, but my 85L II was NOT slow to focus, yes, it could have been faster, but it was anything but slow, I was able to track hockey with the lens.




  
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questionmarc
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Jul 24, 2012 23:31 |  #19

laxlife1234 wrote in post #14765605 (external link)
You can't compare a 5DII to a 60D. FF vs. crop is a WHOLE other game. Even if the 60D has better focus lets say, it's like using a 135 on FF which is a whol other lens. When I moved from a T3i + 85L to 5DII + 85L the difference was outstanding. Not only that, but I NEVER missed focus, if I did it's because I moved or my subject did.

Not many people seem to realize that the DOF is close to 0.2" which barely leaves anything in focus, the slightest movement puts the whole image out of focus. Not only that, but my 85L II was NOT slow to focus, yes, it could have been faster, but it was anything but slow, I was able to track hockey with the lens.

all i have to do is step forward no big deal - ps if you didn't know crop has more DOF even at f1.2

a few people also dont realize that dof is related to the distance from the subject as well

never is such a strong word - from what you are saying you shouldn't even be able to track anything if it is 0.2" LOL


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kin2son
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Jul 24, 2012 23:35 |  #20
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I'd take the 5D3 combo.

Personally I am over with super fast aperture and super thin DOF for portrait. Stop it down and you get much better results.


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Daan37
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Jul 25, 2012 01:37 |  #21

5D2 + 85L II = stick to the center AF point and crop in post. AF accuracy will be great.


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Caekys
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Jul 25, 2012 04:31 |  #22

Daan37 wrote in post #14766072 (external link)
5D2 + 85L II = stick to the center AF point and crop in post. AF accuracy will be great.

But if you do that then your DOF will no longer be a true f1.2 DOF, probably at around f1.4~f2 range, depending on how much you crop.


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Daan37
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Jul 25, 2012 04:40 |  #23

Caekys wrote in post #14766380 (external link)
But if you do that then your DOF will no longer be a true f1.2 DOF, probably at around f1.4~f2 range, depending on how much you crop.

I am afraid I don't follow you. How can a crop in PP change what is in focus and out of focus?


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Caekys
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Jul 25, 2012 05:03 |  #24

Daan37 wrote in post #14766396 (external link)
I am afraid I don't follow you. How can a crop in PP change what is in focus and out of focus?

It is the same logic as why crop sensor has a thicker DOF full frame, because it is cropped!:D


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questionmarc
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Jul 25, 2012 05:52 |  #25

Caekys wrote in post #14766425 (external link)
It is the same logic as why crop sensor has a thicker DOF full frame, because it is cropped!:D

you're funny


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smorter
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Jul 25, 2012 07:00 |  #26

Caekys wrote in post #14766380 (external link)
But if you do that then your DOF will no longer be a true f1.2 DOF, probably at around f1.4~f2 range, depending on how much you crop.

No cropping it will actually reduce DOF even more

That's why crop cameras have less DOF than FF cameras when the positioning of the subject and photographer and focal length and aperture settings are kept constant, for a given print size.

I have checked what I wrote above and can't see a typo.


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lannes
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Jul 25, 2012 07:06 |  #27

Daan37 wrote in post #14766396 (external link)
I am afraid I don't follow you. How can a crop in PP change what is in focus and out of focus?

+1 i don't understand as well, cropping an image does not increase the depth of field, the DOF is set as soon as you take the picture


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Jul 25, 2012 07:11 |  #28

^ That's not true, "DOF" is perception based

Cropping won't change an out of focus image, but it will alter our perception of the region that looks in and out of focus

If you view a photo from 10 feet away, it will look to have more DOF than if you view it from 10cm away.

Similarly, a heavily cropped photo will look like it has less DOF than a loosely framed shot


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laxlife1234
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Jul 25, 2012 07:38 |  #29

questionmarc wrote in post #14765651 (external link)
all i have to do is step forward no big deal - ps if you didn't know crop has more DOF even at f1.2

a few people also dont realize that dof is related to the distance from the subject as well

never is such a strong word - from what you are saying you shouldn't even be able to track anything if it is 0.2" LOL

That made absolutely no sense. I don't think you realized that when I said the DOF is so thin with the 85L at near MFD you have 0.2" to get into focus.

I obviously exaggerated when I said that I never got stuff out of focus, but I had a keeper rate close to 90% when shooting at f/1.2. When something wasn't in focus, it was more or less my fault, not the cameras fault.

I'm also a fan of focus then recompose - I'm not sure if the OP is, but if he is, using the back focus button makes it a lot easier.

P.S. You're wrong about crop having more DOF, FF sensors have more DOF. I guarantee you that if you stick that 5DIII of yours on a tripod, shoot a subject and without changing the distance at all stick the 60D with the same lens you used for the 5DIII and crop FF image to look exactly like the 60D - maybe the 60D has little better quality due to the MP and not being cropped but you'll see it looks exactly the same. Reason why FF has more DOF is because you have the true MM length of the lens, it just appears to have less because it's not as cropped. Might want to take a look and read this (external link).




  
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pv94
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Jul 25, 2012 07:50 |  #30

The size of the sensor only has an indirect influence on DOF. What does influence it most is focal length. To have the same angle as a 85mm/FF on a crop sensor, you will be using a 50mm. With a 50mm lens you have a deeper DOF at same aperture as with a 85mm.

this means that for a "portrait angle" your longer lens on FF will result in shallower depth of field than a shorter lens on crop.

cropping in post has nothing to do with that if you're still shooting at the same focal length...




  
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5DM3 + 85 1.8 or 5D2 + 85 1.2L
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