Papercut
Well-known
Just picked up a Focotar-2 (50/4.5) to use with a BEOON and Sony A7ii as a faster scanning method.
The Focotar has some dust (not a worry) and small paint chips internally. One of the chips definitely impacts the scan: an oblong lighter spot in a top corner of the image. I didn't notice it until I scanned some shots with an even tone (sky). Otherwise, it works great and I'm happy with it.
So, I'm wondering how difficult it is to open up and clean the Focotar-2. Will it be easy to take the back optical element(s) out and blow the interior clean? Easy to put together again? (Would it need to be re-collimated if I did that?) Or should I send it to someone for a professional clean?
The Focotar has some dust (not a worry) and small paint chips internally. One of the chips definitely impacts the scan: an oblong lighter spot in a top corner of the image. I didn't notice it until I scanned some shots with an even tone (sky). Otherwise, it works great and I'm happy with it.
So, I'm wondering how difficult it is to open up and clean the Focotar-2. Will it be easy to take the back optical element(s) out and blow the interior clean? Easy to put together again? (Would it need to be re-collimated if I did that?) Or should I send it to someone for a professional clean?