Author Archives: canonrepair

About canonrepair

Ruzsa János. Amatőr fotós, Canon DSLR váz. Amateur photographer. Canon DSLR user.

24-105 F4 IS – damaged stabilizer


A few weeks ago I repaired a used 24-105 for myself. I have purchased it in a box in thousand pieces for a bargain price. Everything was ok – excepting a strange noice from the stabilizer when switching on and … Continue reading

Posted in 24-105 F4 IS, EF lens, EF-S lens | 5 Comments

Dust blow gun – compressed air


I know, that there is possible to work with a hand-pump too – but trust me, the difference is HUGE. If You work with 2-3 bar, or special cases 5-6 bars, any solid contamination will be eliminated. At first, You … Continue reading

Posted in dirty, dust, tools | 3 Comments

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

Posted in General topics | 1 Comment

Polishing a damaged lens – cerium-oxide


Normally I repair only Canon DSLR-s – but sometimes I cant resist to other optical devices either. I had to clean a DLP (!)  video-projector for my sons school – it was terrible, a half kg of dust in a … Continue reading

Posted in dirty, dust, lens, tools | 3 Comments

F-words repairing Canon lens


F like F…. FLEX. The f.cking flex. I had to repair a 17-55 with aperture problems. The lens started to close the aperture more and more at certain zoom values. Simple case, isn’t it? You have to change the flex. … Continue reading

Posted in 17-55 F2.8 IS, Canon lens, EF-S lens, test bench | 8 Comments

Glued screws – when the serviceman get’s angry


I have got a Sigma 300 mm F2,8 lens from a customer, which has some dirt in the inside. A lens element was dirty or some fungus on the surface. (As a supplementary information I was told, that on the … Continue reading

Posted in DIY, lens, tools | 1 Comment

7d flash overexposure – RTFM, RTFM, and again: RTFM


I repaired a 7d for somebody (a faulty rotary switch, and a general internal cleaning, with glueing the flying screw, which was of course on the side of the shutter motor), and after assembling it I checked the general functions … Continue reading

Posted in 40d, 7d, Canon camera, flash/strobe | Leave a comment