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Frequent Contributor
Posts: 26
Registered: ‎09-25-2016

70-200 2.8 - Focusing Issue

[ Edited ]

Hi all - 

I have been having some issues with this lens (70-200 2.8 IS ii). These examples were shot at f/ 2.8 and when you zoom in, you can see that really there is nothing in focus. It appears like a total lack of focal plane. I use back button auto focus + single point and focus on the eyes. 

 

Here is the original photo

 

Camera: Canon 70d 

Settings

  • Manual Mode
  • ISO: 250
  • 182mm
  • f/3.2
  • 1/5000s

Focus

  • one shot 
  • center focus point

Distance

  • Probably about 10-15 away 
  • I switched between 1.2-infinity and 2.5-infinity but both gave me the same results

 

When I use live view, I am able to get a crisp photo. I just wish I could get the same resutls with the viewfinder. (When I look the viewfinder, the photo looks sharp, but when I look at it - it comes out like this). 

 

Any tips or advice for shooting with this lens and nailing focus would be greatly appreciated!

 

P.S: The lens has been calibrated (at home) and the photos still come out like this:

 

Screen Shot 2021-04-13 at 12.04.18 PM.pngScreen Shot 2021-04-13 at 12.04.18 PM.pngIMG_4981.JPGIMG_4982.JPGIMG_7559.JPGScreen Shot 2021-04-13 at 12.10.00 PM.png

 

 

 

And this is with Live View: 

Screen Shot 2021-04-13 at 12.16.42 PM.pngScreen Shot 2021-04-13 at 12.17.09 PM.png

VIP
Posts: 11,883
Registered: ‎08-13-2015

Re: 70-200 2.8 - Focusing Issue

Let's 


@sarahr_7 wrote:

Hi all - 

I have been having some issues with this lens (70-200 2.8 IS ii). These examples were shot at f/ 2.8 and when you zoom in, you can see that really there is nothing in focus. It appears like a total lack of focal plane. I use back button auto focus + single point and focus on the eyes. 

 

When I use live view, I am able to get a crisp photo. I just wish I could get the same resutls with the viewfinder. (When I look the viewfinder, the photo looks sharp, but when I look at it - it comes out like this). 

 

Any tips or advice for shooting with this lens and nailing focus would be greatly appreciated!

 

P.S: The lens has been calibrated (at home) and the photos still come out like this:

 

Screen Shot 2021-04-13 at 12.04.18 PM.png

 

 

 

And this is with Live View: 

 


Let's pick a photo.  Need some more info from you.  How much is this image cropped?  Which camera?

 

 What were your exposure settings?  

Which AF mode?  One Shot?

Which AF point(s) did you use?

 

How far away were your subjects, and did you set the focus range on the lens to match?

Which shooting mode on the top mode dial are you using?

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

"Doctor told me to get out and walk, so I bought a Canon."
VIP
Posts: 8,308
Registered: ‎11-13-2012

Re: 70-200 2.8 - Focusing Issue


@sarahr_7 wrote:

Hi all - 

I have been having some issues with this lens (70-200 2.8 IS ii). These examples were shot at f/ 2.8 and when you zoom in, you can see that really there is nothing in focus. It appears like a total lack of focal plane. I use back button auto focus + single point and focus on the eyes. 

 

When I use live view, I am able to get a crisp photo. I just wish I could get the same resutls with the viewfinder. (When I look the viewfinder, the photo looks sharp, but when I look at it - it comes out like this). 

 

Any tips or advice for shooting with this lens and nailing focus would be greatly appreciated!

 

P.S: The lens has been calibrated (at home) and the photos still come out like this:

 

Screen Shot 2021-04-13 at 12.04.18 PM.pngScreen Shot 2021-04-13 at 12.04.18 PM.pngIMG_4981.JPGIMG_4982.JPGIMG_7559.JPGScreen Shot 2021-04-13 at 12.10.00 PM.png

 

 

 

And this is with Live View: 

Screen Shot 2021-04-13 at 12.16.42 PM.pngScreen Shot 2021-04-13 at 12.17.09 PM.png


You say you get sharp images with LIVE view and unsharp through the optical viewfinder.  Is everything else constant?  I.e. only variable is the viewing method?

 

You say you calibrated the lens - I assume you mean AFMA?

 

If the only variable is the viewing method then you need to check your AFMA settings.

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
Frequent Contributor
Posts: 26
Registered: ‎09-25-2016

Re: 70-200 2.8 - Focusing Issue

[ Edited ]

@Waddizzle wrote:

Let's pick a photo.  Need some more info from you.  How much is this image cropped?  Which camera?

 

 What were your exposure settings?  

Which AF mode?  One Shot?

Which AF point(s) did you use?

 

How far away were your subjects, and did you set the focus range on the lens to match?

Which shooting mode on the top mode dial are you using?



Here is the original photo

 

Camera: Canon 70d 

Settings

  • Manual Mode
  • ISO: 250
  • 182mm
  • f/3.2
  • 1/5000s

Focus

  • one shot 
  • center focus point

Distance

  • Probably about 10-15 away 
  • I switched between 1.2-infinity and 2.5-infinity but both gave me the same results

 

1 - Focus Example.png

Frequent Contributor
Posts: 26
Registered: ‎09-25-2016

Re: 70-200 2.8 - Focusing Issue


@jrhoffman75 wrote:

You say you get sharp images with LIVE view and unsharp through the optical viewfinder.  Is everything else constant?  I.e. only variable is the viewing method?

 

You say you calibrated the lens - I assume you mean AFMA?

 

If the only variable is the viewing method then you need to check your AFMA settings.


Yes, it was with the microadjustment settings in my camera. It seems like I can never nail focus when I use the ptical viewfinder. I may need to re-visit those settings 

Reputable Contributor
Posts: 723
Registered: ‎02-23-2020

Re: 70-200 2.8 - Focusing Issue

I'm wondering if the diopter setting is masking the issue (regarding the difference with live view vs the viewfinder).

 

Anyhow, what was the reason to apply microadjustments in the first place?  Did you find consistent issues (e.g. backfocussing)?

 

When I had my 50mm f/1.2 lens on a EOS 6D, I found that combo had consistent problems, so I did the micro adjustments.  But that same exact copy of the 50mm lens worked a-ok on my 5D IV without any adjustments.

 

Also, what equipment did you use for the adjustments?  I personally use Datacolor's SpyderLENSCAL product.

 

Finally, if you absolutely need to apply adjustments, note that you'd want to be at a distance of say your average distance from your subject.  That can be tough to choose just one value though, especially with a zoom lens.

--
Ricky

EOS 5D IV, EF 50mm f/1.2L, EF 135mm f/2L, 600EX-RT (x6), ST-E3-RT
EOS C70, RF 24-70 f/2.8L IS
VIP
Posts: 8,308
Registered: ‎11-13-2012

Re: 70-200 2.8 - Focusing Issue

Diopter won’t make a difference as long as the OP is not manually tweaking focus.

Frequently AFMA is not necessary. Reset AFMA to “0” and see what happens.

If you think you need AFMA try using the Canon approach. Link to follow.
John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
VIP
Posts: 8,308
Registered: ‎11-13-2012

Re: 70-200 2.8 - Focusing Issue

https://cdn.static-bl.com/images/manual/Canon-AF-Micro-Adjust-Guide.pdf
John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
VIP
Posts: 11,883
Registered: ‎08-13-2015

Re: 70-200 2.8 - Focusing Issue


@sarahr_7 wrote:

@Waddizzle wrote:

Let's pick a photo.  Need some more info from you.  How much is this image cropped?  Which camera?

 

 What were your exposure settings?  

Which AF mode?  One Shot?

Which AF point(s) did you use?

 

How far away were your subjects, and did you set the focus range on the lens to match?

Which shooting mode on the top mode dial are you using?



Here is the original photo

 

Camera: Canon 70d 

Settings

  • Manual Mode
  • ISO: 250
  • 182mm
  • f/3.2
  • 1/5000s

Focus

  • one shot 
  • center focus point

Distance

  • Probably about 10-15 away 
  • I switched between 1.2-infinity and 2.5-infinity but both gave me the same results

 


Thanks, for the clear and concise answers.  I agree with the others.  Zero out the AFMA settings.  Leave it cleared out.

 

Making those adjustments should be a last resort, not a first option.  It is easier to come up with a bad set of numbers than a good set.  It is a deceptively difficult task.  I am not saying it is hard, just that it is not easy to do.  It can test your skills just as much the gear.

 

09CAE029-41A9-4E33-BBEC-B5583A5D1D50.jpeg

 

You are also working with a very narrow Depth of Field, too.  

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

"Doctor told me to get out and walk, so I bought a Canon."
Forum Elite
Posts: 14,258
Registered: ‎12-07-2012

Re: 70-200 2.8 - Focusing Issue

"P.S: The lens has been calibrated (at home) and the photos still come out like this:"

 

This is almost assuredly the issue.  People misuse this feature all the time.  Set it back to zero. Now reset the 70D to factory. Menus, tools, clear all settings and clear all custom settings.  Now set the 70D to "P" mode. Set ISO to 200 and daylight WB. Use One shot and do not use BBF or Ai-servo. Do use just the center focus point.  Now tale some random shots out side on a nice sunny day.  Make sure there are some vertical lines in you test sample shots like trees or a fence or buildings, etc.

 

If it works, it works and you set or set something incorrectly. If you still get OOF shots call Canon.1 (800) 652-2666 Set up a  C&C for the lens.

 

BTW, you always shoot Raw?  Not absolutely necessary for this test but it is in your normal work. Smiley Happy

EB
EOS 1DX and 1D Mk IV and several lenses!
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