C220 Sekor 80mm lens - how bad is this dust?

<p><img src=" alt="" /><img src=" alt="" /><br>

Hi everyone</p>

<p>Just bought a new camera and after a week or so I read about shining a torch through the nes to pick up on all the dust - bit scary! How abad is this - does it need a service do you think?</p>

<p>Many thanks</p>

<p>Will</p><div></div>

<p>I think it may not all be dust, per se. Looks like some fungus, and that could have etched the glass, reducing the quality of the optics.</p>

<p>BTW, here is a cropped version of your image, cropped and resized to avoid the long loading time of your original:</p>

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<p>That lens isn't dusty, it's <em>inhabited</em>! Get a refund, get it cleaned or get another one. 80s aren't hard to come by in better shape.</p>

<p>I don't think it is that difficult to unscrew the front and rear groups for cleaning the accessible surfaces, I've done it with the 135 and 105mm lenses but not the 80mm. If the stuff is internal to the front group. I don't know how hard it would be to open that up. Perhaps worth a try if you bought it "as is".</p>

<p>Thats ridiculously contaminated with fungus, get rid of it.</p>

:(

 

OK thanks guys.

 

Can fungus spread from one lens to another? Sorry

for basic questions, not come across this before.

<p>Yes, it can spread (spores, y'know), and may well be in the camera it was mounted on, if they were stored together.<br>

I Googled™ for fungus removal and found a number of services that will try it, but the one at<br>

http://lensn2shutter.com/fungus.html <br>

seems to have useful warnings about the feasibility of the various outcomes.</p>

 

<p>This is not dust, it is <em>microbial</em> growth, principally fungus. This lens may be salvageable, but I think you will have some significant pitting in the coating, if not the glass as well</p>