Canon Community Canon Community
 


Reply
Highlighted
Reputable Contributor
Posts: 809
Registered: ‎11-14-2012

Re: 6d Focusing Problems


@RobertTheFat wrote:

@Waddizzle wrote:

"So if you need PRECISE focus, you need to use an alternative method. There is a reason Pro cameras have over 60 AF points instead of just one. You can use the closest AF point to where you need the focus to be. " 

 

Somehow, I don't think that is the primary way how the extra AF points are used.  Sure you can use them that way.  But who does it that way looking through the viewfinder, anyway?  ...


I do, usually.


Me too.

DCS 3c, DCS 520, D30, D60, 1Ds, 300D, 30D, 1000D IR, 7D, 6D, 6D, M5
15-45/3.5-6.3 IS, 16-35/4 IS, 22/2, 24/1.4 II, 24-105/4 IS, 50/1.4, 85/1.8, 100/2.8, 70-200/2.8 IS II, 300/2.8 IS
Highlighted
VIP
Posts: 9,231
Registered: ‎08-13-2015

Re: 6d Focusing Problems


@RobertTheFat wrote:

@Waddizzle wrote:

"So if you need PRECISE focus, you need to use an alternative method. There is a reason Pro cameras have over 60 AF points instead of just one. You can use the closest AF point to where you need the focus to be. " 

 

Somehow, I don't think that is the primary way how the extra AF points are used.  Sure you can use them that way.  But who does it that way looking through the viewfinder, anyway?  ...


I do, usually.


And, give up all of those center focus point features?  If you have the time to switch back and forth between random points, fine.  Go for it.  I think that approach is in the minority.

 

I don't think it makes any significant difference, as long as you're within the same DoF. We're not talking about a significant change in distance when you focus on the eyes [center point], and then pan the camera slightly away.  If you want that critical of a focus, you should be doing it manually, anyway, IMHO.  I know I would, and do.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
Occasional Contributor
Posts: 20
Registered: ‎06-01-2016

Re: 6d Focusing Problems

I guess my question is should I be manually selecting the autofocus point, focusing on the eye, and then recomposing or just compose and let the autofocus select the point/points? I just want to confidently be able to hit focus in most situations. 

Highlighted
VIP
Posts: 9,231
Registered: ‎08-13-2015

Re: 6d Focusing Problems

"Me too."

 

Well, in that case, your focus is not all that "PRECISE" because you're relying on the camera.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
Occasional Contributor
Posts: 20
Registered: ‎06-01-2016

Re: 6d Focusing Problems

Exactly. That's why I've been choosing the point manually. 

Highlighted
Reputable Contributor
Posts: 809
Registered: ‎11-14-2012

Re: 6d Focusing Problems

[ Edited ]

The problem in the beginning of this thread was a focus issue. Recomposing, if you don't use Hasselblad or if you don't calculate the distance/cos (degrees of your camera shift) and move your camera backwards for correcting the new focus plane, is the wrong thing to start with. Instead that will makes it harder to find out the problem.

DCS 3c, DCS 520, D30, D60, 1Ds, 300D, 30D, 1000D IR, 7D, 6D, 6D, M5
15-45/3.5-6.3 IS, 16-35/4 IS, 22/2, 24/1.4 II, 24-105/4 IS, 50/1.4, 85/1.8, 100/2.8, 70-200/2.8 IS II, 300/2.8 IS
Highlighted
Occasional Contributor
Posts: 20
Registered: ‎06-01-2016

Re: 6d Focusing Problems

what do you suggest then?

Highlighted
Reputable Contributor
Posts: 809
Registered: ‎11-14-2012

Re: 6d Focusing Problems


@perklax wrote:

I guess my question is should I be manually selecting the autofocus point, focusing on the eye, and then recomposing or just compose and let the autofocus select the point/points? I just want to confidently be able to hit focus in most situations. 


Aim with your closest af point and remember that the focus af point is bigger than point you see in the viewfinder.

 

If you want to try you can also change your focus screen to one for manual focus.  It is really easy to do. It will give you a darker viewfinder but you will be able to focus manually and will never need to recompose or try to find the closest af point. I used that for one year in Japan together with my 5D and Helios 58/2.

DCS 3c, DCS 520, D30, D60, 1Ds, 300D, 30D, 1000D IR, 7D, 6D, 6D, M5
15-45/3.5-6.3 IS, 16-35/4 IS, 22/2, 24/1.4 II, 24-105/4 IS, 50/1.4, 85/1.8, 100/2.8, 70-200/2.8 IS II, 300/2.8 IS
Highlighted
Respected Contributor
Posts: 1,971
Registered: ‎02-26-2015

Re: 6d Focusing Problems


@Waddizzle wrote:

 

Well, in that case, your focus is not all that "PRECISE" because you're relying on the camera.


Why do you think people make such a big deal about Micro Focus Adjustment. Properly adjusted the PDAF system will be just as precise as manual focus in LiveView. And when you use the DotTune method that is exactly what you are doing, matching the cameras PDAF system to something that has been focused in LiveView.

Highlighted
Respected Contributor
Posts: 1,971
Registered: ‎02-26-2015

Re: 6d Focusing Problems


@Waddizzle wrote:

 

 

Not until you're dealing with very wide apertures, I don't see what difference focusing and recomposing is going to make, compared to using multiple AF points. 


Exactly, and that is exactly when the OP started having problems. When he was using the EF 24-105 f/4L IS kit lens, no problems. Then he gets the EF 50mm f/1.8 STM and the EF 85mm f/1.8 USM and he starts having problems. The bad technique of focus and recompose that he developed with the kit lens, can't be used with the wide aperture primes.

 

powered by Lithium

LIKE US on Facebook FOLLOW US on Twitter WATCH US on YouTube CONNECT WITH US on Linkedin WATCH US on Vimeo FOLLOW US on Instagram SHOP CANON at the Canon Online Store
© Canon U.S.A., Inc.   |    Terms of Use   |    Privacy Statement