Reading mode: Light Dark

DOES THE 80D OFFER LENS FOCUS CORRECTION?

Go to last post
F

Fotogroup

Active member
Messages
98
Reaction score
38
Location
OH, US
Now a retired Pro, with a large collection of L's, I'm looking to lighten up my personal bag. Lens Focus Correction has been one of the better ideas in recent years and I don't see Lens Correction mentioned in the list of the 80 D's spec's. I've only purchased one lens that didn't need some degree of adjustment with my Pro Canon's.
 
Fotogroup said:
Now a retired Pro, with a large collection of L's, I'm looking to lighten up my personal bag. Lens Focus Correction has been one of the better ideas in recent years and I don't see Lens Correction mentioned in the list of the 80 D's spec's. I've only purchased one lens that didn't need some degree of adjustment with my Pro Canon's.
Click to expand...
Yes, it does. It maintains the ability to MFA your lenses.

--
kind regards
Dale
Moderator Canon Powershot and 7D/XXD forums
 
Last edited:
Fotogroup said:
Now a retired Pro, with a large collection of L's, I'm looking to lighten up my personal bag. Lens Focus Correction has been one of the better ideas in recent years and I don't see Lens Correction mentioned in the list of the 80 D's spec's. I've only purchased one lens that didn't need some degree of adjustment with my Pro Canon's.
Click to expand...
I thought the OP was inquiring about the automated lens correction offered by recently released Nikon cameras.
 
Since OP's title specifically mentions "focus" correction, and the fact that OP owns many L lenses, I doubt the question is about Nikon's Auto Distortion Correction, which affects geometric distortion, chromatic aberration,and vignetting.
 
nt
 
They could, if they wanted. They could AF using the fase-detect AF system (mirror down), then focus using the AF pixels on the sensor (mirror up). The difference must be used for AF adjust. They could even do this for each focus point and maybe even for each focal length and aperture of the lens. It would be a lengthy process though (focal length and aperture AF correction).
 
rdspear said:
Since OP's title specifically mentions "focus" correction, and the fact that OP owns many L lenses, I doubt the question is about Nikon's Auto Distortion Correction, which affects geometric distortion, chromatic aberration,and vignetting.
Click to expand...
Sorry that I wasn't clear (it must have been late). But the new Nikon bodies--D500 and D5--both have automated AF adjustment. Admittedly, those or pro-level bodies, but it would be a nice coup for Canon to be the first to offer this intriguing new feature in an enthusiast-level body.
 
Can someone point me to a reference for automatic fine tuning ? That's what I think the OP was referencing.
 
NormSchultze said:
Can someone point me to a reference for automatic fine tuning ? That's what I think the OP was referencing.
Click to expand...
Sure, but you're going to have to take a walk on the "Dark Side."

Nikon is offering it with its new pro-level bodies: the D500 (crop sensor) and D5 (full frame).

Take a look here: Nikon D500 and D5 Feature List.

A quote from the second point states,

"It turns out that both Nikon D500 and D5 have a brand new “Auto AF Fine Tune” feature, which after achieving focus in live view, automatically adjusts AF Fine Tune settings for the attached lens. And you can apparently do this with only a few button operations! This looks extremely promising, because fine tuning lenses has historically been a painful experience, requiring specific tools and lots of wasted time."

I suspect that in 2-3 years, this feature will possibly be in the 7DMIII and may trickle down to the 90D. If the feature isn't guarded by too many patents, it might even make the next 5D iteration (assuming the feature set is not final).
 
gatorowl said:
"It turns out that both Nikon D500 and D5 have a brand new “Auto AF Fine Tune” feature, which after achieving focus in live view, automatically adjusts AF Fine Tune settings for the attached lens. And you can apparently do this with only a few button operations! This looks extremely promising, becausefine tuning lenseshas historically been a painful experience, requiring specific tools and lots of wasted time."

I suspect that in 2-3 years, this feature will possibly be in the 7DMIII and may trickle down to the 90D. If the feature isn't guarded by too many patents, it might even make the next 5D iteration (assuming the feature set is not final).
Click to expand...
Yes, technically not a big deal to solve as contrast AF is sharp and 100% precise, so if the lens reports back the amount of focusing travel to body, it's easy. The body first does the contrast AF in Live View, then changes to Phase AF, refocus and set the difference as focus adjustment.

But I think this cannot be done without human assistance. The user has to place the camera to a proper flat surface or tripod, should turn off IS, has to set up the environment (good contrast object, enough light), and then perform the operation. And this should be done for different zoom positions of the lens (as the AFMA is also set for wide and tele ends).

As the same procedure is done while setting the focus calibration manually, I don't think this automatism adds that much to the procedure.
 
Last edited:
carlosmeldano said:
gatorowl said:
"It turns out that both Nikon D500 and D5 have a brand new “Auto AF Fine Tune” feature, which after achieving focus in live view, automatically adjusts AF Fine Tune settings for the attached lens. And you can apparently do this with only a few button operations! This looks extremely promising, becausefine tuning lenseshas historically been a painful experience, requiring specific tools and lots of wasted time."

I suspect that in 2-3 years, this feature will possibly be in the 7DMIII and may trickle down to the 90D. If the feature isn't guarded by too many patents, it might even make the next 5D iteration (assuming the feature set is not final).
Click to expand...
Yes, technically not a big deal to solve as contrast AF is sharp and 100% precise, so if the lens reports back the amount of focusing travel to body, it's easy. The body first does the contrast AF in Live View, then changes to Phase AF, refocus and set the difference as focus adjustment.

But I think this cannot be done without human assistance. The user has to place the camera to a proper flat surface or tripod, should turn off IS, has to set up the environment (good contrast object, enough light), and then perform the operation. And this should be done for different zoom positions of the lens (as the AFMA is also set for wide and tele ends).

As the same procedure is done while setting the focus calibration manually, I don't think this automatism adds that much to the procedure.
Click to expand...
What it saves is either having to use a special calibration target or trying multiple calibrations and carefully inspecting each one to determine which is most accurate. That's a lot of work.
 
Yes, I know that the new Nikons have it. But I asked the question on the Canon 80D forum. I'm not interested in the Nikon answer. If I was, I would have been on the Nikon Forum.

I am interested in a Canon answer.
 
Robert Krawitz said:
What it saves is either having to use a special calibration target or trying multiple calibrations and carefully inspecting each one to determine which is most accurate. That's a lot of work.
Click to expand...
Okay, it's true. If the target is to reach the best focus calibration, it could take a 1-2 hours manually VS 10-20 minutes. Good for those using lots of borrowed/rented lenses.
 
carlosmeldano said:
Robert Krawitz said:
What it saves is either having to use a special calibration target or trying multiple calibrations and carefully inspecting each one to determine which is most accurate. That's a lot of work.
Click to expand...
Okay, it's true. If the target is to reach the best focus calibration, it could take a 1-2 hours manually VS 10-20 minutes. Good for those using lots of borrowed/rented lenses.
Click to expand...
Even for those of us with just a relatively small set of our own lenses, this time savings would be significant. I don't mind doing work I have to do, but if I can minimize my labor and get the same results, I'd just as soon do that.
 
You must log in or register to reply here.

Keyboard shortcuts

f
Forum
m
My threads
Mobile site
About
Editorial content
Cameras & Lenses
Community
All content, design, and layout are Copyright © 1998–2025 Digital Photography Review All Rights Reserved.
Reproduction in whole or part in any form or medium without specific written permission is prohibited.
When you use DPReview links to buy products, the site may earn a commission.
©GPS Media - Guides, Products, Services.
Back
Top