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Archive 2012 · Images blurry. What may get wrong with this lens ?
  
 
penghai
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p.1 #1 · p.1 #1 · Images blurry. What may get wrong with this lens ?


Hi, I have a Tamron lens that when it is focused in LiveView mode (D7000) via either AF or MF, it shows a clear image in the back LCD. But the resulted image was always blurry when I pressed the shutter, even when I use a tripod and self-timer on the D7000. The camera works fine with all my other lenses. Anyone knows what may have got wrong in this lens?

(The problem also exist when not in LiveView mode.)

Thanks,

Eric



Nov 23, 2012 at 10:06 PM
hijazist
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p.1 #2 · p.1 #2 · Images blurry. What may get wrong with this lens ?


It could be a backfocusing issue that was common among D7000's...


Nov 23, 2012 at 10:25 PM
scottam10
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p.1 #3 · p.1 #3 · Images blurry. What may get wrong with this lens ?


Liveview shows what the sensor is actually seeing, so if the image is clear and well focussed in liveview, it should be clear when you take the photo

The blurry photo may also be due to slow shutter speed, but if you're on a tripod that shouldn't be a problem either.

I don't know what's happening but it sounds like a problem with the lens, can you get it checked under warranty?



Nov 23, 2012 at 10:36 PM
snapsy
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p.1 #4 · p.1 #4 · Images blurry. What may get wrong with this lens ?


Image Stabilization on?


Nov 24, 2012 at 01:07 AM
Zebrabot
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p.1 #5 · p.1 #5 · Images blurry. What may get wrong with this lens ?


it would help to post a blurry image so that people could take a look at the problem.


Nov 24, 2012 at 01:09 AM
EB-1
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p.1 #6 · p.1 #6 · Images blurry. What may get wrong with this lens ?


Assuming the tripod is steady, maybe the lens is not so sharp. If the issue occurs at large apertures, does it improve at f/8-11 for example?

EBH



Nov 24, 2012 at 01:24 AM
DontShoot
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p.1 #7 · p.1 #7 · Images blurry. What may get wrong with this lens ?


My guess would be mirror slap. Try MLU mode.


Nov 24, 2012 at 03:24 PM
Ben Horne
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p.1 #8 · p.1 #8 · Images blurry. What may get wrong with this lens ?


As already mentioned, the common issues that cause this might be:
1) You have the stabilizer turned on -- it should be turned off on a tripod
2) You are not using mirror lockup, so the shutter slap is shaking the camera at the moment of exposure
3) Your images might be suffering from diffraction, which is when you use aperture numbers at or larger than f/16. It gets particularly bad when you reach the f/22 to f/32 range.

If you post a 100% crop of a troublesome image and post the camera settings you've used, it will help us diagnose what's wrong.



Nov 24, 2012 at 03:54 PM
penghai
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p.1 #9 · p.1 #9 · Images blurry. What may get wrong with this lens ?


Thanks all for your comment.

The lens I have problem with is a Tamron macro lens. It does not have VR. It used to be sharp until last year it fell down about 2 feet and hit the floor. Could the shutter be damaged?

Eric



Nov 25, 2012 at 01:20 AM
 

Search in Used Dept. 



ckcarr
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p.1 #10 · p.1 #10 · Images blurry. What may get wrong with this lens ?


So you ask whether there could be something wrong with the lens in post #1 then finally tell people you dropped it a year ago and suddenly was no longer sharp?

Sheesh...



Nov 25, 2012 at 01:24 AM
Ben Horne
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p.1 #11 · p.1 #11 · Images blurry. What may get wrong with this lens ?


penghai wrote:
Thanks all for your comment.

The lens I have problem with is a Tamron macro lens. It does not have VR. It used to be sharp until last year it fell down about 2 feet and hit the floor. Could the shutter be damaged?

Eric


Looks like you've answered your own question. Lenses require precision alignment, and dropping it on the floor is enough to tweak the alignment of an element or two. You'll best be served by sending it to Tamron and having them check it out. I'd just tell them that the lens doesn't seem very sharp. They might very well cover it under the 6 year warranty if they don't find obvious impact damage.



Nov 25, 2012 at 01:33 AM
BenV
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p.1 #12 · p.1 #12 · Images blurry. What may get wrong with this lens ?


ckcarr wrote:
So you ask whether there could be something wrong with the lens in post #1 then finally tell people you dropped it a year ago and suddenly was no longer sharp?

Sheesh...


common sense isn't so common



Nov 25, 2012 at 02:11 AM
blumesan
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p.1 #13 · p.1 #13 · Images blurry. What may get wrong with this lens ?


Common sense tells me that, if the image is perfectly sharp in live view but appears blurry after the shot, dropping the camera is not the source of the problem. Mirror slap or other source of camera movement, as has been mentioned, is a more likely explanation.


Nov 27, 2012 at 01:18 AM
Berschwinger
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p.1 #14 · p.1 #14 · Images blurry. What may get wrong with this lens ?


Some examples and specifics would go a long way. Sounds like you probably just need to AF Fine Tune the tamron.


Dec 03, 2012 at 05:46 PM
Andre Labonte
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p.1 #15 · p.1 #15 · Images blurry. What may get wrong with this lens ?


penghai wrote:
Thanks all for your comment.

The lens I have problem with is a Tamron macro lens. It does not have VR. It used to be sharp until last year it fell down about 2 feet and hit the floor. Could the shutter be damaged?

Eric



If it looks like a duck, and quacks like a duck, it's a duck! You've stated the issue ... the fix is to send the lens in for repair.




Dec 03, 2012 at 08:40 PM
penghai
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p.1 #16 · p.1 #16 · Images blurry. What may get wrong with this lens ?


Got the lens back from Tamron and it is fixed. They just said adjust AF and focus. Didn't mentioned anything like impact damage. Thanks for those who helps.

Eric



Dec 07, 2012 at 05:09 AM
Andre Labonte
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p.1 #17 · p.1 #17 · Images blurry. What may get wrong with this lens ?


Cool!


Dec 07, 2012 at 06:07 AM





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