donald_kim_lewiston Posted February 9, 2004 Share Posted February 9, 2004 Hi, I previously posted that I had a small speck on the inside of my front element and that I would like to try and remove it myself. I unscrewed the circular ring around the lens but I do not know what to do after that. It looks like I need some type of special tool next. There are two square holes, the size of a pinhead on opposite ends of each other. Thanks, Donny. Link to comment Share on other sites More sharing options...
donald_kim_lewiston Posted February 9, 2004 Author Share Posted February 9, 2004 Is there anything someone can recommend besides buying the lens spanner tool? Thanks, Donny. Link to comment Share on other sites More sharing options...
adam_simpson Posted February 9, 2004 Share Posted February 9, 2004 Dont open it up yourself. Don't even worry about it unless your prints are messed up which I doubt they are. If they are pay $40 or so to have someone do it for you. Link to comment Share on other sites More sharing options...
mskovacs Posted February 10, 2004 Share Posted February 10, 2004 If you want to have your homemade tool slip and gouge the front of the lens by all means... Sorry I don't know the M645 system well but a wide angle lens has got to be worth enough money for a $50 repair vs. you breaking it and throwing it in the junk pile. Link to comment Share on other sites More sharing options...
victor_lioce Posted February 10, 2004 Share Posted February 10, 2004 Donny: If you suspect that you have fungus on an interior surface of a lens, try placing the lens outside and aiming the front element so that the sun shines through the lens. Often, after giving an exposure to sunlight for an hour or so, it can "burn off" the fungus. At a minimum it will kill it and stop it from spreading any futher. if the fungus isn't located in the optical center of the lens and is relatively small, chances are it won't have a significant effect on your images. You might try setting up an 18% grey card and photographing it in direct sunlight at various f stops to see if there are any noticable density differences across the surface of the grey card. If none show up, it probably will not effect image quality. If it does, then I would have the lens professionally cleaned. In the long run, you will be happier and if any damage happens during the cleaning YOU won't be responsible for the replacement! A $40 cleaning is a lot cheaper than acquiring a new lens because you scratched it! Try the test I suggested and then take it from there. Good Luck! Link to comment Share on other sites More sharing options...
donald_kim_lewiston Posted February 12, 2004 Author Share Posted February 12, 2004 Thanks for all the advice. I appreciate it. Link to comment Share on other sites More sharing options...
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