Sigma rechip PCB's are in. Huge thanks to @marcan42 for generously open sourcing this mod. I've been wanting a 300mm lens since I first got my T5i.pic.twitter.com/LGDWUy8WzN
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Circuit elements should be fine. Moving parts would probably depend on what cleaning agent you're using. The glass, I wouldn't even think about it due to the coatings. The bare lens body, if you got it stripped down that far would probably be fine.
Yeah, I think pretty chemically pretty much anything in the lens would be fine with IPA or something like that (but you'd need to clean out and reapply grease where necessary, and I wouldn't immerse the motors). But the glass coatings might not like the ultrasound.
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I use Branson EC in mine. It's good stuff, but stupid expensive due to the cost of hazmat shipping... :/
Thanks. Twitter will use this to make your timeline better. UndoUndo
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