Dust or Oil?

Started Jul 15, 2012 | Discussions thread
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ad800 Junior Member • Posts: 35
Dust or Oil?

Can anyone look at this and tell me if this dust or oil? Barely 1200 actuation's and never changed lens outdoors. I just started noticing these at higher apertures.

This is with a 24-70mm @ 24mm, f8, iso 100.

I ordered a Large Giotto Rocket Blaster but doubt if it will help cleaning these spots if its oil.

 ad800's gear list:ad800's gear list
Nikon Coolpix AW120 Nikon D800 Nikon D810 Nikon AF-S Nikkor 14-24mm f/2.8G ED Nikon AF-S Nikkor 24-70mm f/2.8G ED +3 more
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