Optical adjustment of a slit lamp (ophthalmology)
DIGITAL CANON Repair Blog
by canonrepair
1M ago
A slit lamp is the combination of a CMO stereo microscope and a special lamp, with adjustable lighting area, used to examinate the human eyes. The two eyepieces MUST give the right and left image approx on the same place ..read more
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Canon EF (body-lens data) protocol
DIGITAL CANON Repair Blog
by canonrepair
2M ago
Case You want to see, what happens between the camera and the lens, You will need n oscilloscope, or, better a logic analyser. This is a cheap chinese one – but for our purposes will be ok. Works for example ..read more
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Button cell battery in Canon
DIGITAL CANON Repair Blog
by canonrepair
4M ago
The older cameras use a CR1616 or similar non-rechargable battery, which has to be replaced after a certain time, without opening the camera. These batteries have to supply the internal clock. In a Canon 2000d, or for ex. in a ..read more
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The chinese selector wheel and the good old soviet lathe
DIGITAL CANON Repair Blog
by canonrepair
5M ago
As you know from my previous post, the chinese replacement wheel has a geometrical issue, so can not be used. As I have no time to wait for a new original part (and as the customer would not pay for ..read more
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Separating lens doublets
DIGITAL CANON Repair Blog
by canonrepair
5M ago
https://www.norlandprod.com/techrpts/separating.html And here is as a text: Separating Lenses BondedWith Norland Optical Adhesive The simplest method for separating a lens bonded with Norland Optical Adhesive is to immerse the lens in a solvent combination made up of the following: methylene ..read more
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Be careful with replacement parts!!!
DIGITAL CANON Repair Blog
by canonrepair
6M ago
As everybody else, I have to use chinese replacement parts. Flex cables for exaample a lot – and 99% they are ok. And sometimes I have to use replacement wheels – as Canon has invented the plastic/rubber wheels, where the ..read more
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Canon 24-70 f4 IS – replacing the aperture flex
DIGITAL CANON Repair Blog
by canonrepair
6M ago
This time I have no time for a post. Just here you have the photos, case you need some help during reassembly. Please mark how I replaced the flex: the old flex was NOT desoldered, just cutted, and the soldering ..read more
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The aperture or the board? This is the question…
DIGITAL CANON Repair Blog
by canonrepair
11M ago
I had to repair a canon 17-55 f2.8 is. Simple case: error 01, broken aperture cable. Or not. After replacing the flex, assebly – does not work, just struggles to move the aperture. Shit. Disassebly. Inspecting the board under microscope ..read more
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How to… take out a stucked ROLLER
DIGITAL CANON Repair Blog
by canonrepair
1y ago
I had to repair a Tamron lens – and the 6 rollers (in fact, just plastic positioning washer are stucked in the barrel. Take a BIGGER self-tapping screw. Screw it in the plastic part. Grab it with a tweezers or ..read more
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Stuck screws in the lens
DIGITAL CANON Repair Blog
by canonrepair
1y ago
Sometimes you have to disassemble lenses or cameras with stucked screws inside. In fact, you have only one trial: case the screw will not move with the first rotation, the phillips slot will be damaged – and you will get ..read more
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