Monthly Archives: January 2022

Recementing of the 28-70 foggy element


The Canon 28-70 F2.8 has a special problem: after a while, one of the duplets inside gets foggy. The problem is the cementing, a bad glue or process. After you disasseble the element, you can glue it with a UV … Continue reading

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What is the pickled cucumber good for…


…in the camera workshop?! Today I have to clean a Sigma 24-105 1:4 OS – inside/outside. (in fact, I hate Sigmas…). First problem: to disassemble the front lens, I have to screw out the plastic ring – which has no … Continue reading

Posted in General topics | 6 Comments