topic Re: Canon 80D sensor adjustment in EOS DSLR & Mirrorless Cameras

Canon 80D sensor adjustment

beastbeef — Fri, 20 Nov 2020 00:02:19 GMT

So this might be a stretch, but does anyone know the exact distance between the top of the three pegs and the sensor bracket of an 80D? I've astro moded the sensor and now it has a bit of sensor tilt. I marked the location of the screws before and counted the turns while unscrewing, but I guess it wasn't precise enough. Thank you!

Re: Canon 80D sensor adjustment

Ray-uk — Fri, 20 Nov 2020 13:27:13 GMT

I think you will find that the position will be different for every 80D because the sprung adjustment of the screws is there to compensate for tolerance differences in lens mounting and camera body etc

Looks like the only option you have now is trial and error ....... Good Luck

If you want to know what you should have done then do a google search for "Digital canon repair blog" and go to blog article dated 30th September 2018.

Re: Canon 80D sensor adjustment

shadowsports — Fri, 20 Nov 2020 15:17:54 GMT

@Ray-UK,

I checked out the article...

It should also include best to send to Canon or Mid West Camera for repair.

I envy anyone who is brave enough to disassemble electrinics like this.

I too, wish him luck.

Re: Canon 80D sensor adjustment

ebiggs1 — Fri, 20 Nov 2020 15:56:10 GMT

"I've astro moded the sensor ..."

I don't have any idea but when I was active in the local astronomy club there were guys that did impossible, to me, things to their cameras. Perhaps you have a local club. It is certainly likely to have a guy that knows how to do everything to a camera.

Probably why I never got the great photos they did!

Re: Canon 80D sensor adjustment

Waddizzle — Fri, 20 Nov 2020 19:59:25 GMT

@shadowsports wrote:
@Ray-UK,
I checked out the article...

It should also include best to send to Canon or Mid West Camera for repair.

I envy anyone who is brave enough to disassemble electrinics like this.

I too, wish him luck.

If the sensor has been modified, I doubt Canon would want to touch it.

Re: Canon 80D sensor adjustment

wq9nsc — Fri, 20 Nov 2020 22:02:41 GMT

I assume this involved removing the existing lowpass/IR filter, was it replaced with another filter or a dummy piece?

As Ray stated, it is trial and error time. Canon will have a test stand to quickly set up this set of parameters but I doubt if they will touch a modified camera. But it shouldn't take too long to dial it in through trial and error IF you go slowly and precisely.

I have aligned a lot of precision electronic test gear and the "secret" is approaching the perfect set up incrementally. If you make big changes with one adjustment, you will probably overshoot the correct setting and will find yourself trying to offset it with another adjustment and once you start this over-adjustment process you will be spending a lot of frustrating time chasing your tail before you get it right. My father taught me precision oscilloscope calibration when I was quite young and one Tektronix model had 52 separate adjustments for each of its dual delay lines and the adjustments interact with each other. I learned very quickly to be precise and take time or that would turn into a multiple hour tedious process and trying to get an image sensor precisely aligned could be an equally frustrating process.

Rodger

Re: Canon 80D sensor adjustment

Waddizzle — Sat, 21 Nov 2020 04:02:38 GMT

@wq9nsc wrote:
I assume this involved removing the existing lowpass/IR filter, was it replaced with another filter or a dummy piece?

As Ray stated, it is trial and error time. Canon will have a test stand to quickly set up this set of parameters but I doubt if they will touch a modified camera. But it shouldn't take too long to dial it in through trial and error IF you go slowly and precisely.

I have aligned a lot of precision electronic test gear and the "secret" is approaching the perfect set up incrementally. If you make big changes with one adjustment, you will probably overshoot the correct setting and will find yourself trying to offset it with another adjustment and once you start this over-adjustment process you will be spending a lot of frustrating time chasing your tail before you get it right. My father taught me precision oscilloscope calibration when I was quite young and one Tektronix model had 52 separate adjustments for each of its dual delay lines and the adjustments interact with each other. I learned very quickly to be precise and take time or that would turn into a multiple hour tedious process and trying to get an image sensor precisely aligned could be an equally frustrating process.

Rodger

The universal translator says this, "Be meticulous!"

Re: Canon 80D sensor adjustment

beastbeef — Sun, 22 Nov 2020 01:48:26 GMT

I'll acquire some equipment and try it out... Thank you for the info.

Re: Canon 80D sensor adjustment

beastbeef — Sun, 22 Nov 2020 01:49:03 GMT

I just removed the lP/IR filters.

Re: Canon 80D sensor adjustment

Ray-uk — Sun, 22 Nov 2020 11:14:25 GMT

If you just removed the filters and left the sensor bare to achive full spectrum then you will need to move the sensor forward by about a third of the thickness of the original filter stack to achieve correct focus.