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bhargav
Joined: 24 Nov 2011
Posts: 938
Location: Helsinki, Finland
Expire: 2014-11-24
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 Posted: Thu Aug 09, 2012 1:55 pm Post subject: Hey, there is a bug in my lens! Oly 50/3.5 |
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bhargav wrote:
Of course the lens likes bugs, being a Macro, it got so close that the bug crawled inside the lens! 
Don't know the real story but I got it for £9.99. As far as I can see it doesn't affect the pictures. Do I need to take it out?
These are taken by holding it with a PK adapter as I haven't yet got an OM adapter. Wide open.
#1
#2 (sorry for high iso, but should give an idea if the bug affects the picture)
This is the bug. It is right there behind the rear element.
#3
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LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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| Posted: Thu Aug 09, 2012 2:25 pm Post subject: |
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LucisPictor wrote:
Perhaps a new evolutionary stage of fungus!
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Lloydy
Joined: 02 Sep 2009
Posts: 7787
Location: Ironbridge. UK.
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| Posted: Thu Aug 09, 2012 2:42 pm Post subject: |
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Lloydy wrote:
I had a bug like that in a Super Paragon 135, and as long as I gave the lens a gentle tap to make sure the bug was at the bottom and out of line of the glass it was fine. I did remove the bug in the end it seemed only right to give him a decent send off.
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bhargav
Joined: 24 Nov 2011
Posts: 938
Location: Helsinki, Finland
Expire: 2014-11-24
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| Posted: Thu Aug 09, 2012 2:52 pm Post subject: |
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bhargav wrote:
| Lloydy wrote: |
| I had a bug like that in a Super Paragon 135, and as long as I gave the lens a gentle tap to make sure the bug was at the bottom and out of line of the glass it was fine. I did remove the bug in the end it seemed only right to give him a decent send off. |
I have never opened the lens elements before so I'm little worried. The bug is stuck on the element so isn't moving but you are right, it will only be wise to get it out at some point.
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Lightshow
Joined: 04 Nov 2011
Posts: 3666
Location: Calgary
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| Posted: Fri Aug 10, 2012 1:27 am Post subject: |
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Lightshow wrote:
Removing the rear element shouldn't be too hard, http://whitemetal.com/olympus/om_mc_50_35/index.htm
If you have calipers, you'd unscrew the the retaining ring with the 2 small holes, without calipers it get's much trickier,
you'd have to remove the mount(or the dust cover) to gain access to the retaining ring.
I'm not sure if the rear 2 elements may or may not come out as a group, and honestly, for what you paid, I'd get it professionally cleaned, or a quote at least, a nice lens like this isn't the best to learn on since it does have floating elements.
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