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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 12 Feb 2014 (Wednesday) 04:27
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Want to buy a Canon 6D but...

 
Tigana
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Feb 12, 2014 04:27 |  #1

Hello guys. I'd like to buy this camera, but i'm a bit concerned with autofocus system. I'm not a pro, only want to take portraits of my kids with shallow DOF, F/1.8-2.8. I've tried a Nikon D700 in "mint" condition with a Nikon 50mm 1.8G at F/1.8 using outer points and it works great. However, i prefer a lighter camera and capable of record video, so the Canon 6D is a good option. In another hand, i prefer color and AWB SOOC from Canon. Yesterday, i was trying a Canon 6D and 24-105L combo in a local store, at F/4, and central and outer points work great, not issues, but is not a wide aperture lens. I don't know if the Canon 6D is capable of accurate focus with these lenses (F/1.8-2.8) and which is the best focus method (focus and recompose doesn't seem a good technique...).
I can get the Nikon D700 and de Canon 6D for the same price... but i'm a bit undecided for this matter. It would be great if you could upload some samples of portraits wide open with Canon 6D.

Thanks in advance

Best regards


  
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tat3406
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Feb 12, 2014 05:00 |  #2

my experience, the focus is very accurate using centre or outer point.
But compared to D700, 6D only have 12 focus points, maybe not enough for your usage. I normally focus manually when the subject was not near the focus point. I had change the focus screen to EG-S, big help in manual focus.

Go through the users post and I did't see any user complaint the focus problem with fast lens.
https://photography-on-the.net …/showthread.php​?t=1252637


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kin2son
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Feb 12, 2014 05:08 |  #3
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How about go back to the store, put on a 50 1.4 or something and try it out yourself?

Reason I say this is 6D owners here will tell you there is no problem with the AF, and others will disagree.

You simply won't and can't find the answer here I'm afraid, best to test it out yourself imho.


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Lowner
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Feb 12, 2014 05:10 |  #4

Why the shallow DoF? If the nose is sharp, then the back of the head is not! No, call me fussy, but I prefer the whole subject to be in proper focus. I shot at f/22 yesterday and still did not quite get the whole clump of snowdrops in focus.


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Tigana
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Feb 12, 2014 05:13 |  #5

kin2son wrote in post #16683145 (external link)
How about go back to the store, put on a 50 1.4 or something and try it out yourself?

Reason I say this is 6D owners here will tell you there is no problem with the AF, and others will disagree.

You simply won't and can't find the answer, best to test it out yourself imho.

You're right... but it will be a little difficult ... They are not too friendly :rolleyes:


  
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Tigana
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Feb 12, 2014 05:15 |  #6

Lowner wrote in post #16683146 (external link)
Why the shallow DoF? If the nose is sharp, then the back of the head is not! No, call me fussy, but I prefer the whole subject to be in proper focus. I shot at f/22 yesterday and still did not quite get the whole clump of snowdrops in focus.

Honestly, I think the fun of FF is to isolate the subject from its environment


  
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InfiniteDivide
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Feb 12, 2014 05:37 |  #7

kin2son wrote in post #16683145 (external link)
How about go back to the store, put on a 50 1.4 or something and try it out yourself?

Reason I say this is 6D owners here will tell you there is no problem with the AF, and others will disagree.

You simply won't and can't find the answer, best to test it out yourself imho.

I agree with Kin2son, I could tell you many reasons why I love my 6D, but if you're torn between FF cameras, rent the 6D and even a 5D III and compare for a few days.


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Tigana
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Feb 12, 2014 06:34 |  #8

InfiniteDivide wrote in post #16683170 (external link)
I agree with Kin2son, I could tell you many reasons why I love my 6D, but if you're torn between FF cameras, rent the 6D and even a 5D III and compare for a few days.

Thanks mate. Unfortunately, here in my country, is not possible to rent cameras... :(. I'll try in another store


  
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gabebalazs
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Feb 12, 2014 06:58 |  #9

Can you maybe meet with other photographers who have a 6D and fast primes and test them for a few minutes of testing?
I agree with the others here, the best is to test it if it works for you.


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TeamSpeed
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Feb 12, 2014 07:00 |  #10

Tigana wrote in post #16683153 (external link)
Honestly, I think the fun of FF is to isolate the subject from its environment

In many cases, you can do that with a fast prime and crop. Lowner's comment is related to a thread we had some time ago that sometimes there is such a thing as "too thin a DOF". When people shoot portraits where one eye is in focus, or their eyes are in focus, but their nose and ears aren't, then they are potentially abusing the FF/thin DOF ability, and really don't need it.

I have no doubt that the 6D center point at least could keep up with your kids. :)


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palad1n
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Feb 12, 2014 07:32 |  #11

more AF points doesn´t mean faster or more precise focus at all... i wouldn´t be afraid of 6D AF system regarding precision, just it´s far more difficult to get proper focus on fast objects like birds and keep it in frame.
6D is light FF camera with top IQ, no need to be afraid.


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InfiniteDivide
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Feb 12, 2014 07:43 |  #12

Another thing to mention, often users, myself include, don't realize is a 50mm f1.4 will have the *FOV* similar to 80mm AND f2.8 on a crop camera. Meaning not only is it only seeing the center of the lens (80mm), it is also increasing the DOF in the shot as well.
To get the thinnest DOF out of a f1.2 or 1.4 lens, you must use a FF camera.


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MakisM1
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Feb 12, 2014 08:22 |  #13

InfiniteDivide wrote in post #16683311 (external link)
Another thing to mention, often users, myself include, don't realize is a 50mm f1.4 will have the FL of about 80mm AND f2.8 on a crop camera. Meaning not only is it only seeing the center of the lens (80mm), it is also increasing the DOF in the shot as well.
To get the thinnest DOF out of a f1.2 or 1.4 lens, you must use a FF camera.

This is misleading...:rolleyes:

The Focal Length and the aperture do not change, as they are physical characteristics of the length. Period!

The Field of View provided by a 50 on a crop camera is similar to an 80.
The aperture does not change. The light metering results for an average lit photo will remain the same if you change bodies.

Actually, the DOF does not appreciably change if you shoot an object from the same distance.

The commonly held misconception that the FF has a shallower DOF materializes only if the photographer CHOOSES TO MAINTAIN THE SAME FIELD OF VIEW OF A FF ON A CROP and backs off.

For example, take a photo of a group of children from the same spot, with the same lens and the same aperture, shutter speed and ISO. Crop both photos to frame one child's head. The two photos will be nearly identical, same FOV, same DOF, same lighting. Depending on the sensor generation differences, the crop will have more pixels in the photo, up to a lot more.

This is totally arbitrary, but understandable. However, let's not propagate untruths or half-truths.:rolleyes:


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bobbyz
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Feb 12, 2014 08:35 |  #14

kin2son wrote in post #16683145 (external link)
How about go back to the store, put on a 50 1.4 or something and try it out yourself?

Reason I say this is 6D owners here will tell you there is no problem with the AF, and others will disagree.

You simply won't and can't find the answer here I'm afraid, best to test it out yourself imho.

Agree completely. Overall it is very nice camera for the price.


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bobbyz
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Feb 12, 2014 08:40 |  #15

palad1n wrote in post #16683286 (external link)
more AF points doesn´t mean faster or more precise focus at all... i wouldn´t be afraid of 6D AF system regarding precision, just it´s far more difficult to get proper focus on fast objects like birds and keep it in frame.
6D is light FF camera with top IQ, no need to be afraid.

Hum. Have you shot with 6d and another camera with better AF?

As most here know I had 6d and 5dmk3 for a while. 6d center is very good, outer points are good but no way near center point. On 5dmk3 I have like 40 cross points which behave like the center point. Some say it doesnt matter, it does for me even when shooting portraits with wide primes. With 6d I had to focus/recompose as I couldn't put those outer points on the eye, unless I shot very loose. Also outer points on 6d are horizontal or vertical sensitive so sometimes they don't lock. With lot more cross points your life is much easier.

BTW - I sold my 6d this week. Needed money for other things.


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