Alley in Pisa, Italy

by Lars Kotthoff

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4
votes
2answers
144 views

Is it possible to DIY adjust the focus ring distance scale of a lens?

I have a particular lens in mind, but is it generally possible to do this adjustment? Of course there are a lot of lenses that don't have any distance scale to begin with. Many lenses have the scale ...
0
votes
0answers
162 views

Where can I find a service manual for Tamron AF 28-300mm f/3.5-6.3 XR LD Aspherical Macro Zoom Lens (for Nikon)?

I'm a photographer from Sri Lanka. I disassembled my Tamron AF 28-300mm f/3.5-6.3 XR LD Aspherical Macro Zoom Lens (for Nikon) to clean it myself. But now, it's difficult for me to reassemble it. I ...
2
votes
2answers
240 views

Can I polish a scratch off of lens contacts?

I have a Canon lens (ultrasonic 17-85mm) and the biggest of the contacts is scratched slighty. It is now showing a connection error. It works only from time to time. Is there a way to polish the ...
4
votes
2answers
512 views

What tools and spare parts are needed to repair Canon 200mm f/1.8 USM prime lens?

The focus of Canon 200mm f/1.8 L seems to be entirely USM driven. Manually rotating the black ring has no impact at all on mine, as it is broken. What tool set would be the best I could buy (from ...
2
votes
1answer
323 views

How to fix stuck aperture?

I have a Micro-Nikkor 55 mm 1:2.8 lens. The aperture appears to be stuck. Is it worth trying to repair the lens? Are there any good guides for disassembling the lens?
1
vote
2answers
658 views

Name of contact pins of Canon mount and where to buy it?

I want to convert my Canon lens into a macro lens. I really need the contact pins to customize the ring so the aperture will work. But I can't find it anywhere. Does somebody know the name of this ...
5
votes
2answers
937 views

Focus ring stuck on Canon 17-85mm lens

I have a Canon EF-S 17-85mm f/4-5.6 IS USM lens on which the focus ring is stuck/jammed. Is this something I could easily repair myself? If so, are there any detailed instructions on-line on how to ...
6
votes
3answers
665 views

Have I broken my Canon 28-135mm lens after DIY repair?

Last week I removed the front element from my Canon 28 - 135mm lens to remove a grain of sand from the lens. It was easy to remove the 4 screws, take of the top layer of glass and remove the grain. I ...
5
votes
1answer
1k views

How do I remove a broken lens mount ring from a lens?

Today my Nikon d90 was drop with attached Nikkor 18-200mm lens. The lens detached from the body and ripped of the metal ring with screws from the body. How can I fix it? I don't know how to remove the ...
11
votes
2answers
915 views

Is it possible for a hobbyist to create a lens element?

Is it possible for a hobbyist to create/mold/grind/polish a lens element? There seems to be lots of astronomy hobbyists polishing mirrors and occasionally a large lens element. Is there an equivalent ...