7D AF Micro Adjustments

My lens shoots a front focus image. I confused on which way to adjust, + or - in the AF Micro Adjustments.

Thanks for the assistance in advance.

+

SS308 wrote in post #17278646
My lens shoots a front focus image. I confused on which way to adjust, + or - in the AF Micro Adjustments.

Thanks for the assistance in advance.

If your lens is front focusing, you would have to adjust it back toward the camers. If you take a look at the LCD in the MFA menu, you'll notice that the graph shows a camera at one end [negative end] and a mountain at the other end [positive end] to make it easier to tell which direction you need to go.

If it's front focusing, then it's already backed up towards the camera. It needs to focus further away from the camera.

Snydremark wrote in post #17278706
If your lens is front focusing, you would have to adjust it back toward the camers. If you take a look at the LCD in the MFA menu, you'll notice that the graph shows a camera at one end [negative end] and a mountain at the other end [positive end] to make it easier to tell which direction you need to go.

What? No, front focusing means the focal plane is in FRONT of the target, as in, too close to the camera. You need to PUSH it out away from the camera with positive (+) adjustments to get the focal plane to be on the subject.

Keyan wrote in post #17279055
What? No, front focusing means the focal plane is in FRONT of the target, as in, too close to the camera. You need to PUSH it out away from the camera with positive (+) adjustments to get the focal plane to be on the subject.

Yeah; listen to Keyan...I'm moving in reverse apparently

Thanks to everyone. I glad to see that I was not the only one confused on which way to adjust...

Will try adjustment tonight after work.

Thanks again!

Which lens needs adjustment?
I only ask because I have yet to have a Canon Film/Digital SLR or Canon lens that needed to be adjusted.
Just curious.

The Dot Tune method of AF adjustment is a nice option for many. Fairly simple and no cost. Take a look at the video explaining the process:
http://www.youtube.com​/watch?v=7zE50jCUPhM

Snydremark wrote in post #17278706
If your lens is front focusing, you would have to adjust it back toward the camers. If you take a look at the LCD in the MFA menu, you'll notice that the graph shows a camera at one end [negative end] and a mountain at the other end [positive end] to make it easier to tell which direction you need to go.

What is the MFA menu?

Micro Focus Adjustment menu.

apersson850 wrote in post #17280923
Micro Focus Adjustment menu.

Thanks for the help. I had been looking for this adjustment without success. Cameras today are too complicated.

If I adjust micro focus on a per-lens basis, should the adjustment I used on 7D Classic also apply to 7D Mark II? In other words, if I had a -10 setting for my 35mm lens on 7D Classic, should I also go with a -10 on 7D Mark II?

No. The setting you found on one camera is for that lens and camera in combination. The same lens on a different camera may give a different result.

As an example, I have one lens, the EF 50 mm f/1.4 USM, which works best at -12 on my two 7D bodies. But on the 1DX the best result is obtained at -8.
It's not useful on my older 40D, which lacks micro adjust all together.

But it's likely that it's in the same ballpark, like my figures above. I didn't get -12 on one and +17 on the other.

BodyResults wrote in post #17279979
The Dot Tune method of AF adjustment is a nice option for many. Fairly simple and no cost. Take a look at the video explaining the process:
http://www.youtube.com​/watch?v=7zE50jCUPhM

The Dot Tune technique works quite well--I've had great luck with it. Another option is to download Magic Lantern for the 7D and install it. Then go into Magic Lantern and enable the Dot Tune module. This module will run the Dot-Tune process automatically. I had better results using the module than doing it without the module. Be sure to do it multiple times to make sure you get the correct MFA adjustment amount. I had to run it 3 times on each lens and pick the most consistent setting.

johnf3f wrote in post #17279932
Which lens needs adjustment?
I only ask because I have yet to have a Canon Film/Digital SLR or Canon lens that needed to be adjusted.
Just curious.

You are a lucky man. My 85 1.8 was okay but once I did the micro adjust I found it performed much better.