Gear Talk > Lenses

Is my Canon 100mm macro broken? Soft everywhere

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Kingnog:
It's difficult to say if I always had this problem, but I just noticed it recently. Lens works fine for macro shots but everything else is soft. Here are some examples, all shot at high shutter speeds on my 7D and my XSi. Even the focus point is not in-focus. It is worst at f/2.8 and gets "OK" at f/8, but still worse than my 70-300mm IS USM.

I did not notice this until yesterday when 30 out of 30 shots had this hazy/out of focus look to them.

elflord:

--- Quote from: Kingnog on April 30, 2012, 06:21:52 PM ---It's difficult to say if I always had this problem, but I just noticed it recently. Lens works fine for macro shots but everything else is soft. Here are some examples, all shot at high shutter speeds on my 7D and my XSi. Even the focus point is not in-focus. It is worst at f/2.8 and gets "OK" at f/8, but still worse than my 70-300mm IS USM.

--- End quote ---

Looks like it could be out of focus. Did you try manually focusing in live view to determine whether it's the AF or the optics ? If it's a focus problem, you could try microfocus-adjusting (since your body supports it) and see if you can get the longer shots to work without messing up your macro shots.

neuroanatomist:
I'd call that unacceptably soft.  Given your shutter speeds, it's unlikely to be motion blur or camera shake (especially the second shot at 1/640 s).  Could be the AF, could be the lens.  I'd suggest testing with Live View and manual focus (or autofocus in Live View, as long as you're not using the quick mode where the mirror flips up) and see if that's sharp, as elflord suggests.  If that works, you need AFMA on your 7D (XSi doesn't support it).  If it's still just as soft, I'd contact Canon Service.

Kingnog:

--- Quote from: neuroanatomist on April 30, 2012, 07:11:45 PM ---I'd call that unacceptably soft.  Given your shutter speeds, it's unlikely to be motion blur or camera shake (especially the second shot at 1/640 s).  Could be the AF, could be the lens.  I'd suggest testing with Live View and manual focus (or autofocus in Live View, as long as you're not using the quick mode where the mirror flips up) and see if that's sharp, as elflord suggests.  If that works, you need AFMA on your 7D (XSi doesn't support it).  If it's still just as soft, I'd contact Canon Service.

--- End quote ---

--- Quote from: elflord on April 30, 2012, 06:47:54 PM ---
Looks like it could be out of focus. Did you try manually focusing in live view to determine whether it's the AF or the optics ? If it's a focus problem, you could try microfocus-adjusting (since your body supports it) and see if you can get the longer shots to work without messing up your macro shots.

--- End quote ---

Unfortunately, I can't seem to focus it even in live view mode. :(
How much would this sort of repair cost? What could even be wrong?

elflord:

--- Quote from: Kingnog on April 30, 2012, 07:40:37 PM ---
Unfortunately, I can't seem to focus it even in live view mode. :(
How much would this sort of repair cost? What could even be wrong?

--- End quote ---

If  you still get blurry images when you manually focus in live view ("zooming" in to 10x to make sure you're dead on), it's not the AF -- it's got to be something with the lens. If the lens is under warranty, the repair won't cost you anything.  I'd go to Canon's website and fill out their online repair form. They should be able to give you an estimate in a timely manner.

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