p.1 #1 · R5 Front focusing significantly - is there no microadjustment?
I have had good results with my R5, however I noticed that I was missing shots with my 600 f/4 II. I set up a target and shot some test shots with the 600, my 400 DO II, and the R100-500. I shot 4 shots each at ISO 400, 800, 1600 and 3200. In all cases using the 600, the R5 was focusing in front of the target by at least 6" and maybe more as the target only is marked for 6".
I considered that the problem might be the lens and I shot the exact same sequence with my 5Dsr with excellent results. I shot the same sequence with the 400 on both cameras and also with the R 100-500. All lenses were excellent - except the 600.
In trying to resolve the issue I am reading that the R5 doesn't have microfocus adjustment because of the way its sensor focuses. So if anyone can enlighten me on this I would be grateful. Additionally the camera locked up on me today and I was only able to "reboot" by removing and re-installing the battery - not sure if that has any significance. I have installed firmware 1.2 without any issues.
Thank you for any help or insight on this.
Cheers!
p.1 #2 · R5 Front focusing significantly - is there no microadjustment?
That’s interesting. What mode are you shooting in and I assume you are shooting beyond the MFD with the proper focus range selected? There was a firmware update for the v3 lens but I don’t believe that one exists for the v2. Did you ever have this lens serviced or calibrated?
p.1 #3 · R5 Front focusing significantly - is there no microadjustment?
I was testing in one shot AF.
I considered the lens, except the 5Dsr was spot on - the lens worked fine with that lens.
Yes, I was way beyond the MFD for this lens.
p.1 #5 · R5 Front focusing significantly - is there no microadjustment?
Frank Kearney wrote:
I was testing in one shot AF.
I considered the lens, except the 5Dsr was spot on - the lens worked fine with that lens.
Yes, I was way beyond the MFD for this lens.
Thanks
Well, in this case it makes no sense but if you ever figure it out please let us know. Are you sure you were using single point AF and not one of the AF zones ?
I have the same lens and camera and mine is spot on now, but it had a major overhaul done at Canon Canada, because I dropped it last Spring.
Before the major repair though, it was very unstable with temperature changes. Back then I was still using the 5D Mark IV and AFMA drove me crazy.
p.1 #6 · R5 Front focusing significantly - is there no microadjustment?
I went back to double check, and all shots "except" the 600 had the focus point displaying on the target. I will redo the series again tomorrow and see what might be happening, because in all cases I focused first, got the beep and the green square and took the shot using a 2 second time delay. When I looked at them in DPP, there is no red square anywhere just a grid of a hundred or so squares, but none in red. It is now looking more like a problem with the way the lens was set up, which would be great, because I can fix operator error by myself.
I will redo and report back. Thank you for the insight - it really helps to have another perspective.
p.1 #7 · R5 Front focusing significantly - is there no microadjustment?
During the test one focus dot should be on. It needs to be hitting the center of the target and confirm it. Zone focus with many boxes won't work.
I am 99% certain that zone AF was choosing the knob on your tripod, 6 inches in front of your target. Thanks for posting this and reminding me why I rarely use zone.
p.1 #8 · R5 Front focusing significantly - is there no microadjustment?
Andrew J wrote:
During the test one focus dot should be on. It needs to be hitting the center of the target and confirm it. Zone focus with many boxes won't work.
I am 99% certain that zone AF was choosing the knob on your tripod, 6 inches in front of your target. Thanks for posting this and reminding me why I rarely use zone.
There’s nothing wrong with the Zone AF, it did what was supposed to do: focus on the nearest high contrast point in the zone.
I’m convinced this was user error.
p.1 #9 · R5 Front focusing significantly - is there no microadjustment?
This issue is one of the main reasons these cameras offer different focusing modes.
There is no best mode. You need to select the best for your situation and what you want to accomplish. For shooting a test screen, I would use the smallest, tiniest focus point and nail exactly the required place.
For example, if you are shooting something where your lens and distance give you deep depth of field, then zone shooting should be fine and may yield better results than eye detect. If you are shooting something where the lens and distance yield narrow depth of field then using eye detect (assuming a an animal or human) is invaluable or using a small single point focus is required such as shooting flowers up close where blurred fore and backgrounds are wonderful.
p.1 #10 · R5 Front focusing significantly - is there no microadjustment?
Yeah, I hope it was just that you knocked it into zone focus by mistake. One of the greatest benefits of mirrorless is that micro-adjust is completely unneccessary because the focusing happens on the same sensor that the image is recorded on....accuracy is significantly higher as a result. If it truly is front focusing, that would be very bizarre.
p.1 #11 · R5 Front focusing significantly - is there no microadjustment?
You didn't mention whether the 5DSR has micro focus calibrated for this lens. If so I wouldn't be quick to use that camera as a reference as MFA may be covering for a lens problem when it's primary purpose is to cover for DSLR variations. In other words it may still point at a lens problem if it's not a test setup problem.
p.1 #12 · R5 Front focusing significantly - is there no microadjustment?
Jman13 wrote:
Yeah, I hope it was just that you knocked it into zone focus by mistake. One of the greatest benefits of mirrorless is that micro-adjust is completely unneccessary because the focusing happens on the same sensor that the image is recorded on....accuracy is significantly higher as a result. If it truly is front focusing, that would be very bizarre.
That was my thought too, the mirrorless system is "closed-loop" so this type of failure should not happen. But I wonder if there could be a large enough offset in the lens that the camera just doesn't have the range to pull it into focus. But then you would not hear the focus confirmation beep.
p.1 #13 · R5 Front focusing significantly - is there no microadjustment?
Jman13 wrote:
Yeah, I hope it was just that you knocked it into zone focus by mistake. One of the greatest benefits of mirrorless is that micro-adjust is completely unneccessary because the focusing happens on the same sensor that the image is recorded on....accuracy is significantly higher as a result. If it truly is front focusing, that would be very bizarre.
I will never miss MFA. Ever. One reason I went to MLIC.
p.1 #14 · R5 Front focusing significantly - is there no microadjustment?
I am very happy to report that you were exactly right. I don't know how it got into zone autofocus, but clearly operator error - probably pushing buttons when I shouldn't have been or at least not until I was certain what I was doing. As I am sure you know, this is a very complex camera, and one thing changed affects others. But I reset to my original autofocus and this was the first shot. This will also explain why I had such a difficult time shooting yesterday with everything out by just a little. It is apparent now that the zone autofocus was grabbing the nearest part of the bird, and with f/4 it was "almost" in focus. The shots using eye focus were excellent.
Thank you again for helping me think this through.
It's also the end of the year, and let's all hope for good things to happen next year. As the saying goes, "it has to get better because it couldn't get any worse". And the corollary to that is "oh yes it can!"
Happy New Year to my FM friends and again, thank you.
