Alley in Pisa, Italy

by Lars Kotthoff

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2
votes
3answers
118 views

Can gripping a lens too hard cause softness/aberration or other damage?

I have a Nikon D80 kit lens with a circular screw-on polariser filter. In order to remove the filter I might have to grip the lens quite hard, and the end of the lens might be moved about in the ...
0
votes
2answers
74 views

How can I easily tell if a cellphone camera sensor or lens is damaged?

How can I easily tell if a cellphone sensor or lens is damaged?
0
votes
3answers
143 views

My EFS 17-85 lens doesn't focus or click a picture

I have a Canon EOS 400D with a EFS 17-85 mm lens. The camera doesn't capture a picture with this lens attached. It focusses back and forth exactly once per click. I tried with different modes and its ...
0
votes
3answers
187 views

How do old lenses get dented just on the filter ring?

I often see old Nikkor lenses for sale that have one deformation on the lens barrel, at the level of the filter. The focusing barrel is intact, the rest of the lens is in good condition, the glass is ...
2
votes
2answers
214 views

Why does oil leak from the aperture ring of old lenses?

I'm assuming that the oil was there initially to lubricate the aperture blades, but why does it leak out?
3
votes
1answer
135 views

Why would a Nikon lens be missing its rubberized focus ring?

So, I was browsing eBay for Nikon 85mm f/1.8 lenses and I came across this listing. The remarkable thing is the neat absence of the focusing ring, but otherwise pristine appearance of the lens. I was ...
1
vote
2answers
521 views

Dropped camera, now lens won't attach to body - How much for repairs? [duplicate]

I dropped my Nikon D3200. Camera still turns on, but the lens wont attach to the body. It looks like something at the bottom of the lens might be broken; not the actual lens, but a small black circle ...
3
votes
4answers
257 views

What to do with 2nd hand sale of a lens showing oil/moisture coming out of the focus ring?

I just bought a used Canon 28-105mm and when I got it in the mail there was some weird shiny substance, possibly like oil, coming out of the focus barrel. Without thinking I wiped it off because at ...
7
votes
4answers
298 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
247 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. ...
3
votes
2answers
2k 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 -- ...
26
votes
7answers
994 views

Is it ok to breathe on the front glass element of a lens to fog it and clean it?

Nikon specifically recommends not breathing on the glass elements to clean them as harmful acids in the breath can damage the coatings on the glass. However, I've read on many other websites that it ...
3
votes
1answer
149 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
548 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
2k 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
479 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
467 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
378 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 ...
5
votes
5answers
1k 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
269 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
909 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
1k 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
803 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
945 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 ...
26
votes
5answers
9k 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
209 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 ...
25
votes
6answers
4k 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 ...