Category Archives: General topics

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Solvent for the cemented lens (not with canada balsam)


Case You want to dismantle a glued (cemented) lens, try to use this: 70% dichlor-methane https://en.wikipedia.org/wiki/Dichloromethane 20% methanol and 10% ammonia solution (I think 40%). Be carefull, dont swallow them, they all are dangerous.. After ca 1-2 days of soaking, you … Continue reading

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Canon 40dcmos – with no Bayer-filter!


After long trials yesterday I managed to eliminate the complete Bayer-mask from a Canon 40d sensor. No scratches, no damage – just a beautiful golden mirror. Not very simple – and definitely NOT only by scratching it with a piece … Continue reading

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The PH00 screwdriver – the MOST impotant tool for us


Theoretically Canon uses a JIS standard screwdriver. I had bought one for a LOT of money, and… it was worst, that the PH00 screwdrivers. So – nevermore. But which PH00 screwdriver, if you need one?   I can advice you … Continue reading

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Canon 40d motor revival in the body of a 7d


This is a story about my own 7d, which has been flooded with water, before I have purcesed it “as it is”, practically not working. I repaired it in a few hours -worked well after. After a certain time stopped … Continue reading

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Check and repair of a non-working shutter unit


  Canon 40d is renamed for the shutter failures. By my experience there are wo mail possible reasons: the copper wire on the coil is too short, and after a certain time they just break because the moving. This can … Continue reading

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Canon G12 – front lens replacement


Yes, it is a compact. It was big a mistake to accept this work. After working a lot on it, now the front lens is changed (photos will follow). The only problem is, that as I see, the lens unit … Continue reading

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Norland 61 Optical Adhesive Glue – UV Cure


Dear Readers, if somebody wants to try glueing optical glass, and needs some Norland61, (which You have to cure with UV-A light) you have to know, that at the moment is not possible to order it in small quantities (the … Continue reading

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