How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Russell H. Your Own Question

Russell H.
Russell H., Technician
Category: Digital Cameras
Satisfied Customers: 10461
Experience:  Working with digital cameras & questions for nearly 8 years.
13568747
Type Your Digital Cameras Question Here...
Russell H. is online now

I have a Canon 550D with an EFS 10 - 22 zoom lens. The distant

Resolved Question:

I have a Canon 550D with an EFS 10 - 22 zoom lens. The distant part of almost any picture I take with it is out of focus on the left side while something the same distance away on the right side is sharp. This tends to be more pronounced when I am not square on to the subject.
I sent the camera away for repair (twice) and I am told that all the calibrations have been checked and there is nothing wrong with either the camera or the lens. The engineer sent me some sample photos he took with the camera and they are sharp on both sides.
Yet the problem persists. I gad the same problem with my previous camera, another Canon. What can I do?
Submitted: 2 years ago.
Category: Digital Cameras
Expert:  Russell H. replied 2 years ago.
Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.

I would like to ask - if you don't mind - whether, even when one side of the preview image looks unfocused, do the actual photos taken look unfocused themeselves ? take such a photo, review it, and see.

I am thinking that if the camera has been repaired and has had photos in good condition taken, that perhaps your eyesight induces the problem, somehow, possibly owing to uncorrected astigmatism - ? - I am not at all sure of this, so please forgive me if I'm wrong. A photo taken with the camera should prove the point.
Customer: replied 2 years ago.

I sent photos to the engineer and he could see the problem in those I sent him. I am sending you a typical example. It's is only objects in the distance that are out of focus.

In the example the left is out of focus while the centre and right are sharp. It is always the left.

Expert:  Russell H. replied 2 years ago.
Thanks for the picture, it illustrates the problem admirably.

The lamp-posts on the left illustrate a possible cause of the problem: the left edges are blue-tinged, the right edges are red-tinged.

(There may be a trace of that effect on the right, also.)

I suspect that you have a defective lens. When you sent the camera in for repair, did you include the lens assembly? or not? (I believe it is standard procedure to not include the lens when sending in a Canon camera for repair, just the body of the camera being sent.)
Customer: replied 2 years ago.

Yes I sent the lens - the photos they took were using that lens

Customer: replied 2 years ago.

I have sent 3 more pictures. The first (9244) was taken by the technician to demonstrate that there was nothing wrong with the focus, And indeed there is nothing wrong with that one. The second is another taken by me demonstrating the problem. The poor focus is generally when I am not looking square on to the subject as with this one. The third picture (Camden3) is looking square on to the subject. No focus problem there.

Expert:  Russell H. replied 2 years ago.
Are you using AutoFocus to take the pictures that are defective as well as the ones that are OK?
If so, then that would explain the matter... autofocus may be giving a 'general average' focus, or focusing on whatever's nearest, or some such. You may need to change settings, not necessarily away from autofocus so much as just to narrow the field of focus or the like (the 'focus area'.)
Customer: replied 2 years ago.

Yes I always use autofocus out of doors and most others. Camden3 is on manual focus. Tell me more about narrowing the field of focus and I will give it a try. What do I need to do. I am a technology dummy, still more at home with film cameras

If it is what you are suggesting why is it always the left side that is out of focus,

Expert:  Russell H. replied 2 years ago.
It is something to try that might affect the focus problem, I think.

Here's something that I wasn't quite aware of before I looked it up - hopefully this cumbersome URL address will be usable:

http://kbsupport.cusa.canon.com/system/selfservice.controller?CONFIGURATION=1011&PARTITION_ID=1&secureFlag=false&TIMEZONE_OFFSET=&CMD=VIEW_ARTICLE&ARTICLE_ID=34809

which page points out that autofocus uses a number of points to establish focus.

graphic

So, press the button shown.
Then, use the arrow buttons to select the AF point you want to use.
(Or, turn the 'gear' dial to select it.)
Then press SET. (Pressing SET a second time will return to the previous use-all-points autofocus mode.)

Then if you selected the center point on the screen for autofocusing, you just need to press the button half-down while aiming the camera with the subject centered.

That might be tried, since Manual focus doesn't seem to have a problem. Tell me what result you get, please.
Russell H., Technician
Category: Digital Cameras
Satisfied Customers: 10461
Experience: Working with digital cameras & questions for nearly 8 years.
Russell H. and 3 other Digital Cameras Specialists are ready to help you

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • RUSSTING

    RUSSTING

    Technician

    Satisfied Customers:

    497
    30 years as a TV station tech gives me a unique understanding of digital camera operation and repair.
< Previous | Next >
  • http://ww2.justanswer.com/uploads/RU/RUSSTING/2012-1-19_1301_DSC08705a.64x64.JPG RUSSTING's Avatar

    RUSSTING

    Technician

    Satisfied Customers:

    497
    30 years as a TV station tech gives me a unique understanding of digital camera operation and repair.
  • http://ww2.justanswer.com/uploads/RE/Readyrmca/2011-6-24_205114_38136130160763446716587523677594964494321n.64x64.jpg Readyrmca's Avatar

    Readyrmca

    Technician

    Satisfied Customers:

    185
    Over 1000 Camera and Video Accepts!!!!
  • http://ww2.justanswer.com/uploads/DI/dimmusacio/2012-1-26_194857_JA2.64x64.jpg Freddy M.'s Avatar

    Freddy M.

    IT Technician

    Satisfied Customers:

    70
    Years of experience.
  • http://ww2.justanswer.com/uploads/hsroy79/2010-08-08_111707_himadri.jpg hsroy79's Avatar

    hsroy79

    Other

    Satisfied Customers:

    37
    Camra Technician
  • http://ww2.justanswer.com/uploads/EN/Engineer1010/2012-6-9_132423_jaj12a.64x64.jpg Engineer1010's Avatar

    Engineer1010

    Camera Expert

    Satisfied Customers:

    19
    MS Electrical Engg.
  • http://ww2.justanswer.com/uploads/RI/RichieMe/2013-10-21_9435_1891752088969658025993880564n.64x64.jpg Richard's Avatar

    Richard

    Camera Repair

    Satisfied Customers:

    368
    Camera Repairman
  • http://ww2.justanswer.com/uploads/RJ/rjriggins/2015-1-14_16249_ick.64x64.jpg Rick's Avatar

    Rick

    Technician

    Satisfied Customers:

    182
    I'm a photographic equipment technician with over 25 years in the business
 
 
 

Related Digital Cameras Questions