Tagged Questions
5
votes
2answers
99 views
How can I check for damage to my lens from impact with a window?
I was taking a photo at an airport when I accidentally zoomed my Canon SX40HS into a window. The impact wasn't super hard, but there was a thump. I cannot see any visible damage, but how can I check ...
5
votes
3answers
94 views
What could cause a totally broken focus mechanism?
When looking for lens bargains on eBay, I often come across lenses that have something like this in their description:
Lens will not focus automatically or manually. For parts or repair only.
...
2
votes
2answers
190 views
Can a drop of a camera+lens cause AF calibration issues on either — or both — the lens and the body? What are the mechanics involved here?
My question is, if you drop a camera, and you think you might have an AF issue, what are the mechanics involved that might cause a mis-calibration? I can imagine that the lens has movable parts -- ...
3
votes
1answer
99 views
Is the Canon 40mm safe to store when extended?
I just purchased the Canon 40mm pancake lens for my 40D. I noticed that the barrel of the lens extends when focused close. Do I need to be worried about making sure the barrel is retracted before ...
1
vote
2answers
352 views
Pentax DA L 55-300mm lens very soft--is it broken?
There seems to be a problem with my DA L 55-300mm lens, with very soft output at or near the telephoto end:
Wide-open test shot
Pentax K-5 with Pentax DA L 55-300mm @ 300mm. Av, 1/320s f/5.8 ISO ...
2
votes
3answers
778 views
How can I easily tell if a sensor or lens is damaged?
I am pretty interested in recognizing any damage to digital camera in very low level (without any advanced tests).
For example, how can I identify the damage of a sensor or lens?
If there are any ...
2
votes
3answers
244 views
Is it worth getting third-party warranties on lenses?
I've just taken the plunge & ordered a refurbished Canon EF-S 17-55 f/2.8 lens. Refurbished & on sale, it's still expensive -- about as much as my T1i + other lenses put together! I think my ...
3
votes
3answers
362 views
Is there any damage that a lens can have that is unrepairable?
Just wondering after I dropped my lens and had it repaired is there any specific kind of damage that would ruin a lens to the point where you'd be better just buying another used one.
I'm ...
1
vote
2answers
287 views
Could a filter damage the curved front element of the Canon EF 100mm f/2.8 Macro USM?
I just got the Canon EF 100mm f/2.8 Macro USM and I really want to put a UV filter on the lens to protect the front element, but I feel uneasy screwing one on because of the curved front element. I ...
3
votes
3answers
610 views
Could an old Nikkor-P lens damage a DSLR?
Someone was interested in buying my D3000 body (I had upgraded and want to keep the lenses). He had a very old Nikkor-P lens, which seemed to fit onto my camera alright. But the LCD screen said "lens ...
2
votes
0answers
262 views
What to do about mold/fungus in a camera lens? [duplicate]
Possible Duplicate:
Why fungus form in lenses, and how to get rid of it?
I am living in a tropical country where humidity is pretty high. I never thought it would be possible that ...
8
votes
2answers
568 views
Is it normal for there to be tiny dust particles in a new lens?
I'm the owner of a new Canon 550D with a Canon 18-135mm IS lens.
While looking into the lens, I noticed what I think are two tiny dust particles (I would say smaller than 1mm) behind the first glass ...
4
votes
2answers
888 views
What can damage a lens?
I just bought a Canon dSLR camera with an 18-135mm IS lens. I really want to take care of it, as I paid extra for this "better" lens, so can the lens get, in some way, damaged if you drop it, say 5 ...
13
votes
3answers
677 views
Could my lens be damaged after being used as burning glass?
During a nice nature trip, sitting at a table with a bottle of wine, somehow we had the ridiculous idea to test a lens as burning glass (which performed quite well).
After we went home I started ...
5
votes
2answers
644 views
Can't auto-focus at full zoom
I have a Canon 1000d, and the standard lens EF-S 18-55mm. Recently I was out taking photos and I've noticed that if I zoom in fully, the lens can't auto focus. I can still take shots using manual ...
24
votes
5answers
6k views
What is the effect of a scratched lens?
I have a lens with a small but significant looking scratch near the center. But I don't see any difference in the photos. Where does the imperfection show up? How important is it to get the piece of ...
6
votes
2answers
187 views
Can a hard impact foul up a lens' focus?
Recently, a camera with lens attached got knocked off a chair and hit the floor (not my gear, fortunately!). Following that, the lens would not focus properly, either with manual focus or auto. The ...
24
votes
6answers
3k views
Can I damage the focus system by turning the focus ring when the lens isn't mounted?
I have a couple lenses that don't have an internal focusing system, and whenever I want to put them back in my bag, I turn the focus ring to make the lens shorter.
I noticed that when the lens is set ...
