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'Cleaning Scratches' on rear lens element.

Discussion in 'Lens Matters' started by Thomas Keidan, Dec 20, 2017.

  1. Thomas Keidan

    Thomas Keidan Well-Known Member

    Hi All,

    I picked up a camera recently that is in near mint condition apart from the one issue mentioned in the title. The rear lens element appears to have a number of micro scratches on the lens not visible to the naked eye but visible when shining a torch through. Is this an issue at all? I have the option to return the camera but have been struggling to find one in near mint condition. Will this have any noticeable impact on my image quality. i'm a complete novice so I apologise if this is a stupid question! Thanks
     
  2. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    Small scratches on the rear element are very unlikely to have any obvious effect on most pictures. With extreme backlighting they might increase flare. They wouldn't bother me provided the rest of the optics and the mechanics were OK. If in doubt you can test the lens by taking pictures of a sunset with and without trees or similar in front of the sun to see whether the rendering suits you.
     
  3. Thomas Keidan

    Thomas Keidan Well-Known Member

    Great thanks, I will go and shoot a roll tomorrow in a variety of lighting scenarios and see if I notice anything!
     
  4. Terrywoodenpic

    Terrywoodenpic Well-Known Member

    they might well be fungus.
     
  5. Thomas Keidan

    Thomas Keidan Well-Known Member


    Hi, don't think it's fungus!
     
  6. PeteRob

    PeteRob Well-Known Member

    You are worrying again! Just get on and use it!
     
  7. nimbus

    nimbus Well-Known Member

    Leave well alone.
     
  8. Thomas Keidan

    Thomas Keidan Well-Known Member

    Thanks, will keep and learn not to worry!
     
  9. RogerMac

    RogerMac Well-Known Member

    If it works then it's OK

    What camera is it BTW?

    Thanks
     
  10. Thomas Keidan

    Thomas Keidan Well-Known Member

    Olympus Mju II, so I annoyingly have to wait until I have had film developed with it!
     
  11. RogerMac

    RogerMac Well-Known Member

    Yes it is annoying having to wait! Not a model I am familiar with but I have heard good things about it. Hope all goes well, as I expect it will and am looking forward to seeing some results.
     
  12. Thomas Keidan

    Thomas Keidan Well-Known Member

    Thanks Roger, I'll make sure to send you some sample shots!
     
  13. gray1720

    gray1720 Well-Known Member

    Admittedly it's medium format, so it's a nice big negative to hide any flaws, but I have a camera with a chip in the rear elephant, and I've yet to spot any effect on the neggy.

    Irony time... bought in Canada by someone training for Bomber Command, it was made at the Nagel Werke in Stuttgart...

    Adrian
     
  14. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    So it's a jumbo chip??? :confused:
     
  15. gray1720

    gray1720 Well-Known Member

    Badump-tish!

    I'll try to find a photo when I get home - I was quite startled when I saw it, it's very noticeable.

    Adrian
     
  16. William Parker

    William Parker Well-Known Member

    It can be quite amazing what you can see when you shine a powerful light through the rear of a lens. I did this with an Elmar F2.8 not long back and could not understand what was causing what I can only describe as minute bubbles on the edge of the front element when viewed from a side angle.
    When the lens was partly stripped and the front element removed I realised it was the result of minute paint chips on the cup like device with slots in it that control the iris blades.!
     
  17. David Traynor

    David Traynor Member

    Are you using a magnifying glass when buying a new camera?
    I did years ago and found all kinds of things that I thought were faults with the lenses.
    After a while I realised that the best test for a camera's lens is to use it. If you like the results, it's a good lens.
    David
     
  18. Learning

    Learning Ethelred the Ill-Named

    India ink. If a scratch or chip is gross and causes glare then just black it up with india ink. use a very fine sable hair brush bought from an artist supply shop.
     

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