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Occasional Contributor
Posts: 11
Registered: ‎10-28-2018

REBEL SL2 FOCUS PROBLEMS

I recently purchased a used Rebel 200d.  I planned to use an EF-S 17-85 lens on it.  When I mount this lens, I cannot get a sharp focus.  Same thing with my EF 20-35 lens.  Has anyone else run into this problem, or am I doing something wrong, or does the camera require servicing?  Admittedly, this is a new camera for me.  Thanks very much.

VIP
Posts: 8,367
Registered: ‎08-13-2015

Re: REBEL SL2 FOCUS PROBLEMS


@FTBNLOVER wrote:

I recently purchased a used Rebel 200d.  I planned to use an EF-S 17-85 lens on it.  When I mount this lens, I cannot get a sharp focus.  Same thing with my EF 20-35 lens.  Has anyone else run into this problem, or am I doing something wrong, or does the camera require servicing?  Admittedly, this is a new camera for me.  Thanks very much.


Didn’t the camera come with a lens, or did you buy it used?

Make your lens is securely mounted.  Make sure the lens AF/MF switch is set to AF.  Switch the top dial on the camera to Green [A] mode.  Go outside on a sunny day, and take some test shots of stuff that is 50-100 feet away from you.

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"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Occasional Contributor
Posts: 11
Registered: ‎10-28-2018

Re: REBEL SL2 FOCUS PROBLEMS

Thanks very much...I did that, and it seemed to work very well.  However, if I set it to aperture priority (which I normally use), the result is soft and disappointing.  Would an STM lens correct this?  Again, thanks very much for your kind advice.

VIP
Posts: 11,377
Registered: ‎12-07-2012

Re: REBEL SL2 FOCUS PROBLEMS

"When I mount this lens, I cannot get a sharp focus."

 

What do you mean by sharp focus?  Do you mean the pictures are not sharp or the viewfinder is not sharp? If the VF is not sharp the diopter may be off.  Adjust it. Small wheel beside it.

If the photos are not sharp u/l a sample so I can see what might be the problem.

EOS 1DX and 1D Mk IV and several lenses!
Esteemed Contributor
Posts: 3,420
Registered: ‎02-17-2016

Re: REBEL SL2 FOCUS PROBLEMS

If it only happens in Av, are you sure it is not motion blur due to a slow shutter speed?

VIP
Posts: 11,377
Registered: ‎12-07-2012

Re: REBEL SL2 FOCUS PROBLEMS

"I planned to use an EF-S 17-85 lens on it.  When I mount this lens, I cannot get a sharp focus..."  "... if I set it to aperture priority (which I normally use), the result is soft..."

 

OK, which is it or is it both? Does it only happen with this combo?

EOS 1DX and 1D Mk IV and several lenses!
Occasional Contributor
Posts: 11
Registered: ‎10-28-2018

Re: REBEL SL2 FOCUS PROBLEMS

I've tried fiddling with the diopter dial, with no success/change in the unsharp photos.  The AI option seems to work, but using this exclusively turns the camera into a large point-and-shoot camera only.  I normally use Aperture priority.  I am wondering if it is the lens which may need adjustment, replacing it with an STM lens, or formatting a new card.  My last option...I'm doing something real stupid and don't know it.... Thanks for your advice.

Occasional Contributor
Posts: 11
Registered: ‎10-28-2018

Re: REBEL SL2 FOCUS PROBLEMS

Could be, but I doubt it.  I will pay more attention to my settings.  Thanks for your suggestion.

VIP
Posts: 8,367
Registered: ‎08-13-2015

Re: REBEL SL2 FOCUS PROBLEMS

If the camera and lens combo worked in Automatic mode, then you are likely the reason photos may not look right in Av mode.

On sunny day, any mode should work well, depending on distance to the subject in some modes. Try Auto mode again, then switch to Av mode.

You will get better advice if you could post a sample.
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"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Esteemed Contributor
Posts: 3,420
Registered: ‎02-17-2016

Re: REBEL SL2 FOCUS PROBLEMS

The focusing system does not care which exposure mode it is in. It is totally independent.

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