What is this?
Posted 14 April 2020 - 02:27 PM
It's hard to say for sure, but judging from the general shape and the yellowish color I would say pollen grains.
Posted 14 April 2020 - 02:30 PM
Might be a bit early for pollen, but that is my guess, also.
Posted 14 April 2020 - 02:32 PM
What's the best way to remove it from the corrector plate without scratching it?
Posted 14 April 2020 - 02:43 PM
Try getting one of those things that you can suck boogers out of a baby's nose with. It works well for pushing a gentle stream of dry air. So I would try blowing it off with one of those. Don't use your own breath though.
Posted 14 April 2020 - 11:46 PM
I normally use a lens cleaning fluid called Baader Optical Wonder for cleaning the surface after blowing away loose particles with a blower bulb. Baader Optical Wonder removes pollen too. No matter what cleaning agent you use, be sure to read the instructions first. There are dozens of threads on CN about cleaning optical surfaces.
Posted 15 April 2020 - 12:12 AM
It's on a corrector plate too so I'd rather avoid cleaning until it's really bad.
There was some other dust so I ended up using the shop's vac, I tightened both clutches and held the hose tip like a scalpel, a couple centimeter off the surface. There isn't much reflection on these so slow breathing and focus was required.
Most of the plant boogers are gone now.
Posted 15 April 2020 - 12:39 AM
Normally it's a good strategy to avoid cleaning optics too often. But in case of pollen I would remove it immediately. Pollen is sticky like glue and can become very difficult to remove if you wait too long.
Posted 15 April 2020 - 07:17 PM
this one is weird: it gelled like a glue on the cars but remains like a dust everywhere else.
I'll look again, it is possible that the vacuum didn't suck up all of them from the corrector plate.