Faulty lens?

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looneytunez1024

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Long story cut short got a canon 55-250mm is lens and im having trouble with the outcome pics they all come out slightly out of focus and they are just not as sharp as the reveiws ive read including the ones on here.

Ive posted links so you can see the full sized image

http://img28.imageshack.us/img28/9643/handheld2.jpg

http://img99.imageshack.us/img99/3039/handheld1.jpg

http://img541.imageshack.us/img541/9210/img0318d.jpg

http://img13.imageshack.us/img13/8367/img0291tq.jpg

Tried using a tripod and they dont appear much better

Any suggestions as jessops are not to keen on refunding me
 
Can you give me the shutter speeds of them all ?, to rule out camera shake/subject movement. I really need to find that exif viewer...
 
No worries, ive got my exif viewer now!, the first image is definitely camera shake, 1/60th at 250mm is far to low.
And the other shutter speeds are just about acceptable for the focal length(1/250th), but still low enough for there to be a possibility of shake. Try 1/320 or higher. The 1/Focal Length rule is a guide only, and I find I need to double it for acceptable images at 135mm!
 
SHOT 1.
EXIF Sub IFD

* Exposure Time (1 / Shutter Speed) = 1/60 second ===> 0.01667 second
* Lens F-Number / F-Stop = 56/10 ===> ƒ/5.6
* Exposure Program = normal program (2)
* ISO Speed Ratings = 400
* EXIF Version = 0221
* Original Date/Time = 2010:06:03 20:35:26
* Digitization Date/Time = 2010:06:03 20:35:26
* Components Configuration = 0x01,0x02,0x03,0x00 / YCbCr
* Shutter Speed Value (APEX) = 393216/65536
Shutter Speed (Exposure Time) = 1/64 second
* Aperture Value (APEX) = 327680/65536
Aperture = ƒ/5.66
* Exposure Bias (EV) = 0/1 ===> 0
* Metering Mode = pattern / multi-segment (5)

LAST SHOT
EXIF Sub IFD

* Exposure Time (1 / Shutter Speed) = 1/250 second ===> 0.004 second
* Lens F-Number / F-Stop = 56/10 ===> ƒ/5.6
* Exposure Program = manual control (1)
* ISO Speed Ratings = 200
* EXIF Version = 0221
* Original Date/Time = 2010:05:31 13:52:01
* Digitization Date/Time = 2010:05:31 13:52:01
* Components Configuration = 0x01,0x02,0x03,0x00 / YCbCr
* Shutter Speed Value (APEX) = 524288/65536
Shutter Speed (Exposure Time) = 1/256 second
* Aperture Value (APEX) = 327680/65536
Aperture = ƒ/5.66
* Exposure Bias (EV) = 0/1 ===> 0
* Metering Mode = pattern / multi-segment (5)
* Flash = Flash did not fire, compulsory flash mode
* Focal Length = 220/1 mm ===> 220 mm
 
Yep - Sean you got there before me! I would agree 1/250 is right on the limit for 220mm focal length.
 
Take some images, tripod mounted if you can, at a high shutterspeed 1/500 ish. If they are sharp then the lens is fine.
When you use it next at full zoom use Tv mode,(shutter priority) and select a shutter speed of around 1/320 minimum. Raise the ISO if you need to. Find out what speeds you can use it at without introducing camera shake.
 
Thmaga said:
Take some images, tripod mounted if you can, at a high shutterspeed 1/500 ish. If they are sharp then the lens is fine. When you use it next use Tv mode,(shutter priority) and select a shuuter spped of 1/320 minimum id say raise the iso if you need to., find out what speeds you can use without introducing camera shake.
Click to expand...

ill try that thanks
 
Don't forget folks, this lens has IS

you should be able to hand hold this at 2-3 stops slower than you expect IF the subject is static and not moving of course...

I can hand hold my 70-300 down to 1/30 if I am very careful.....
 
Oh that's a point I missed! throws a spanner in the works.
Make sure if your doing the tests on the tripod that IS is turned off.
Conversely ,make sure when your using the lens hand-held that its switched on!
 
Tripod test and shutter release cable required as it all depends on how shakey ones hands are. The IS should imporve this though but again depends how shakey your hands are. Remember IS off on tripod, I always forget, dont know how much difference it makes.
 
Thmaga said:
Oh that's a point I missed! throws a spanner in the works.
Make sure if your doing the tests on the tripod that IS is turned off.
Conversely ,make sure when your using the lens hand-held that its switched on!
Click to expand...

hi the is was switched on when handheld and off when on tripod

thanks

lens now gone back as im convinced its faulty
 
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