Question about Sigma Cameras
There are several colonies of fungus growing on the front elements, i cannot see them on the rear elements but its possible they are there too. I would like to take the front element off and clean that area myself but not sure where to start. I have successfully cleaned my Nikkor 17-35 in much the same way but that lens appears to be relatively easy compared to my sigma. Any guidance on what I might need and where to start would be great. Chris.
Posted by Anonymous on
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Sigma will not repair this lens as the fungs may be in the lens on the barrels and if thay could clean
or replace optics the fungs may come back so thay cannot give a guarantee I know someone who
cleans lenses let me know if you want to contack him
Posted on Nov 06, 2008
All zoom lenses have softness at the edges and all have certain apertures that are the best for sharpness. You have to experiment to find the ones for your lens. Chromatic abberation is something you would have to use a magnifying glass on your computer screen to see. Don't worry about it.
Posted on Feb 24, 2010
SOURCE: I have quite a lot
Holy Smokes, well if I were you right now I'd put it back together and send it to Sigma for repair cause you dismantle a lens like that there is no way you are going to align those lens elements without the proper equipment.
Using anything more then lens cleaner for camera optics will in fact remove the coating from the lens.
What you have isn't like the lenses from a "View" camera where it was possible to remove one lens group and replace with another but, those lenses were made and used 70 years ago.
Lens technology has changed a bit since then.
I had a manual focus Nikon F2.8 lens one time that had a coating separation on the front element that caused some wicked flare. I took eye glass cleaner and Windex to it to remove the rest of the coating so I could continue the shoot. I then sent the lens to Nikon for repair.
Best of luck with that one
Posted on Apr 27, 2011
Tips for a great answer:
Oct 20, 2012 | Sigma APO 50-500mm F4-6.3 EX DG/HSM Lens
Jun 10, 2011 | Canon Sigma 120-300mm f2.8 EX APO HSM
Jul 27, 2017 | Sigma AF 28-200 Lens
May 15, 2010 | Sigma APO 70-200mm f/2.8 EX DG HSM Lens
Sep 30, 2008 | Sigma Cameras
Dec 06, 2007 | Sigma Zoom Tele 135-400mm f/4.5-5.6 APO...
Oct 07, 2017 | Sigma Cameras
16 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: