Dark Spots on Aperture Blades?

Brian Puccio · Feb 21, 2015

I picked up a lens off eBay for a pretty good price. It was a bit of a gamble since the photos weren't too detailed and the seller wasn't a photo guy, just got it at an estate sale.

Anyhow, everything seems to work normally. No marks on the elements, no haze/fungus, aperture ring snaps nicely, etc. I'm developing a test roll shortly.

My one concern is the aperture blades seem to have a dark spot on the tips. I've taken a photo so you can see what I mean:

http://i.imgur.com/BiAXTDs.jpg

Will this cause an issue over time? Is this something a "CLA" with YYeCamera/Golden Touch would resolve for $100 or so? Or is this a really bad thing and I should just return the lens?

Thanks!

E. von Hoegh · Feb 21, 2015

It's normal, don't worry about it. Just a mark from the movement of the blades.

jjphoto · Feb 21, 2015

Aperture blades are sometimes slightly bent at their tips, maybe this is what you are seeing. In any case, it's completely fine.

250swb · Feb 21, 2015

It looks absolutely fine, nothing unusual at all.

Steve

Brian Puccio · Feb 21, 2015

Awesome, thanks everyone. Glad this isn't the "oil on aperture blades that will gum up your lens" that I read about.

elekm · Feb 21, 2015

Luckily, that's a rangefinder lens, so the aperture doesn't need to snap open and closed.

David Lyga · Feb 26, 2015

It is probably a hint of oil, but looks like the amount is well below the 'danger' threshold. - David Lyga

Dark Spots on Aperture Blades?

Brian Puccio

E. von Hoegh

jjphoto

250swb

Brian Puccio

elekm

David Lyga

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