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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 18 Oct 2011 (Tuesday) 02:36
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Microadjust Software for 5D2

 
Johnny ­ V
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Jun 21, 2012 17:03 |  #1126

Could it be camera movement/vibration? How sturdy is the tripod/head and is it on solid ground?


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Invertalon
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Jun 21, 2012 17:08 |  #1127

I don't think so. Target is outside mounted securely, camera is indoors on a very good tripod/head. EV is over 13, tons of light falling on the target. IS is off.

No other lens has such weird trends as this one does at 200mm... If I do it at 70mm, 135mm, etc... Its fine. At 200mm, I get wacked out trends.

Real world results? No problems that I have noticed myself really.


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Johnny ­ V
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Jun 21, 2012 17:24 |  #1128

Try increasing the mirror lock-up time just to make sure there's no mirror vibration.


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Invertalon
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Jun 21, 2012 17:33 |  #1129

Ill give that a try! Thanks.


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Invertalon
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Jun 21, 2012 20:01 |  #1130

Well I ran the test (3) more times at 200mm, and (1) more time at 70mm. I increased mirror lockup to 2.5 seconds and light was a little less extreme (EV at around 9.5 I believe it was).

First test failed:

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Second test finished with acceptable results. For this I switched the tight tolerance to normal prior to running it. Result was +1 (same as test ran earlier).

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Ran it a third time and got this goofy chart (compared to the rest) with a final result at +2.

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So after running it 5 or 6 times, or whatever it was... I ended up with like three results at +1 and one result at +2 and two failures I believe. So I put it at +1 from the +8 I tested before and results look promising.

Here is how the test looked at 70mm I ran again, which resulted in +4 which has been consistent there for many versions of this software. So +4 it is.

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Not sure why I get such crazy testing results at 200mm, but at least the results have been consistent when the test finishes? :p

I don't know what I can do to get the results very reliable... Larger target, smaller target, less or more distance? Funny thing is, with a TC it seems to be fine at 200mm... It's really strange.

But like I said, taking shots around the yard and real-world stuff, the lens locks on all the time with great focusing. Never have issues with front/back/erratic focusing. It seems to be relative to this testing only somehow!

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Johnny ­ V
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Jun 21, 2012 21:30 |  #1131

I'm finding if the target is too big in the frame ( 80% or more in the frame ) I get inconsistent readings. Try the smaller target and increase the mirror lockup to 4 secs.


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denyeu1nguoi
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Jun 21, 2012 21:34 |  #1132
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interesting :)


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Invertalon
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Jun 21, 2012 22:11 |  #1133

Johnny V wrote in post #14614108 (external link)
I'm finding if the target is too big in the frame ( 80% or more in the frame ) I get inconsistent readings. Try the smaller target and increase the mirror lockup to 4 secs.

The target is actually quite small in the frame as is. The new style target only comes in one size as well (you print however big you want it though). It is about 25ft away on a normal 8.5x11" sheet of paper. So I doubt the size is the issue.

I am going to play around with the +1 value I got today a few times and see if all looks well. If so I won't worry about it until the next time I run that lens again :D

I plan to check with it with the TC tomorrow, though. Curious to see how they compare to values I already have.


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Rai33
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Jun 22, 2012 03:11 |  #1134

Have you tried it per the developers distance recommendations? ie. 6m (40x) for 200mm as opposed to the 7.5m you have been testing at?

Here's his recommendations: https://dl.dropbox.com …20Test%20Distan​ce_1.0.pdf (external link)

Invertalon wrote in post #14614260 (external link)
The target is actually quite small in the frame as is. The new style target only comes in one size as well (you print however big you want it though). It is about 25ft away on a normal 8.5x11" sheet of paper. So I doubt the size is the issue.

I am going to play around with the +1 value I got today a few times and see if all looks well. If so I won't worry about it until the next time I run that lens again :D

I plan to check with it with the TC tomorrow, though. Curious to see how they compare to values I already have.


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Invertalon
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Jun 22, 2012 09:26 |  #1135

Re-ran the test this morning and actually got good looking results. I guess I was too far away from the target. Just moving up two feet made for MUCH better results. Normal, precise focus points on the test result curve.

So if I want to run it at longer distances, I have to print the target out larger. If it is too small the results get really wacky.

Ran the test for times this morning and got +2, +2, +5 and +2 - All at slightly different distances (+/- a foot or so).


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kenjancef
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Jun 22, 2012 11:10 as a reply to  @ Invertalon's post |  #1136

I haven't had time to run the newest version, but it used to come with 2 targets, one small and one large. It only has one now? Used to be the small one was for small lenses, and the large was for zooms or big primes.


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Invertalon
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Jun 22, 2012 14:51 |  #1137

Yes, the new version has one single target. You can print it at any size and you just measure the width of the target you printed and input that into the settings.


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Jun 24, 2012 13:33 |  #1138

I thought my 24-105 was pretty nice on my 5d2 body and just ran it through. +4 and its looking a lot better.




  
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ontopofm
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Jun 25, 2012 22:27 |  #1139

How accurate are the outer focus points calibrations? Has anyone tried them?


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Jun 29, 2012 11:53 |  #1140

Well my 24/70 seems to calibrate out at around -4 at the wide end and +2 at the long end. What to do now? Go for -1 as that's in the middle? I don't think I favour the wide or the long, my shots seem to fall across the focal length of the lens. Thoughts?


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Microadjust Software for 5D2
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