>first and obvious qusestion is are the spots there with >different lenses? you have to eliminate one of the two, glass >or sensor.
Mark, thanks for your reply.
You made a valid point and i will test the sensor with a different lens, even though i attribute the problem to either dust or oil for the reason that all spots are well defined, some of the are much darker that the one i attached. Also the lens i used is for test is a brand new 18-200 without any visible flows or dust. Also changing the FL on the lens from 18 to 24 and to 35 does not make any effect on location of the spots. I’m 99.9% sure that it is a sensor related spots, but to be sure I’m planning to do macro photography tonight and i will do another test using 60mm G macro lens.
Best regards, Vlad
after reading a lot of posts on dust and oil spots i came to a conclusion that i do not have oil spots problems but just the dust. it's not the dust on the lens - as the spots are small and well defined (50 pixel diameter out of 4928×3264 sensor - it's small specs of dust on the sensor, that are not getting removed by air blower.
Any advice on how to proceed with cleaning? will Nikon do the cleaning?
>It's dust on the sensor, as you suspect. > >My cleaning regimen consists of three parts: > >1) Clean with a Rocket blower. This typically removes all or >nearly all of the dust. > >2) If dust remains, clean with a VisibleDust brush. This >generally removes whatever is left. > >3) In the rare case where there is something that can't be >removed with blower or brush, use sensor wipes and Eclipse >solution to do a wet cleaning. > >For the vast majority of cases, steps 1 and 2 will be >sufficient. >
This. I've not yet had to resort to step 3. The Artic Butterfly brushes with the LED lights are easy to use.