Author Archives: canonrepair

About canonrepair

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

No ideea what is wrong – search for the screws

As You know, there are some cameras with typical falling out screws, which can make problems (7d, 5dI, 40d…). I had to repair a 17-85 IS – always the same, aperture flex broken, and as a second mandatory thing, cleaning … Continue reading

Posted in General topics | 2 Comments

AF sensor feedback LED dislocated

During my ten years of repairing I have seen several times cameras with dislocated AF point LED-s. The symptom:  you can see only a very dimmed red light or nothing at all. In some cases the problem is the dislocated … Continue reading

Posted in General topics | 2 Comments

Canon EOS camera error codes and messages

original here:   And here is a copy from the official Canon site, case you don’t find the original.   Camera settings: EOS Error codes and messages When using your EOS camera you may occasionally get an error code … Continue reading

Posted in Canon camera | 4 Comments

Canon battery grip – how to take off

My customer had a Canon camera – and the (original Canon)  battery grip was no more possible to be taken off. This type of grips have a big actuator wheel for the fixing screw – which unfortunately is made of … Continue reading

Posted in Canon camera, grip | 2 Comments

How to measure CMOS position with a dial gauge

Case You want to replace the shutter in a newer Canon camera, you will have to take out at first the sensor. And the sensor is positioned regarding the flange NOT with the help of some adjustment washers, but with … Continue reading

Posted in Canon camera, DIY, tools | 10 Comments

Optical alignment

Cementing a Doublet: Opto-Alignment Technology, Inc.   SmartAlign for lens alignment and assembly processes   Canon EF Lens Plant – Lens Assembly Process   Lens Handler Operations

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The mystery of NO FOCAL LENGTH on flash

The customer has got a used Tamron 17-50 F2,8 lens, and realized that using with a Canon strobe, there is no change on the strobes display, it shows always 17mm focal length. I was sure that there has to be … Continue reading

Posted in Canon lens, Tamron lens | 7 Comments