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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 03 Feb 2013 (Sunday) 16:33
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FoCal Calibration Software... A+ in my book

 
Bakewell
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Feb 06, 2013 15:21 as a reply to  @ post 15580138 |  #46
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To all the people that use this software and think it's great and claim that any problems must be user generated, are you saying that when you calibrate you continually receive the same adjustment figures for the same lenses? Have you ever re-calibrated the same lens twice immediately...and always receive the same numbers?


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05Xrunner
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Feb 06, 2013 15:22 |  #47

Well on focal site. It clearly shows them using ev 5.2 and no mention of ev 10 so where is everyone getting this magical info


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the_weird_one
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Feb 06, 2013 15:27 |  #48

05Xrunner wrote in post #15580177 (external link)
Well on focal site. It clearly shows them using ev 5.2 and no mention of ev 10 so where is everyone getting this magical info

Its in the pdf user manual that came with the download of the software - or at least it did with mine which is well out of date now at v1.3 - though it does what I need so haven't bothered updating it.


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Bakewell
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Feb 06, 2013 15:29 |  #49
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the_weird_one wrote in post #15580196 (external link)
Its in the pdf user manual that came with the download of the software - or at least it did with mine which is well out of date now at v1.3 - though it does what I need so haven't bothered updating it.

Very out of date...the new instructions for the current release state 8.0 EV.


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Bakewell
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Feb 06, 2013 15:37 |  #50
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2Live4 wrote in post #15580207 (external link)
You really need to read the manual before bashing on the software.

What's with the attitude around here lately? He's asking a question.


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joeblack2022
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Feb 06, 2013 15:43 |  #51

05Xrunner wrote in post #15580167 (external link)
Well my target validation I did seems to say its good with green check mark. So if its supposed to be closer then it shouldn't validate. I don't think it getting closer will change anything

Agreed on this point, my target validated even though I wasn't at the recommended distance. Did you follow this chart for recommended distances?

http://dl.fo-cal.co.uk …20Test%20Distan​ce_1.1.pdf (external link)

Bakewell wrote in post #15580173 (external link)
To all the people that use this software and think it's great and claim that any problems must be user generated, are you saying that when you calibrate you continually receive the same adjustment figures for the same lenses? Have you ever re-calibrated the same lens twice immediately...and always receive the same numbers?

I typically run it a few times to see if there are any glaring inconsistencies. For the most part it's been pretty close +/- 2 and I average it out. I use Plus and I'm not past ruling out user error in my own case as I haven't been overly detailed in my testing.


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05Xrunner
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Feb 06, 2013 15:43 |  #52

Ummm I did check the manual. My target is setup to specs and I saw nothing about what ev has to be at. And last test was done with natural light. So what is it that the manual doesn't say that I am supposed to find


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hollis_f
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Feb 06, 2013 15:51 |  #53

05Xrunner wrote in post #15580138 (external link)
this is my error and NOTHING has moved a cm.
So waste of 64bucks

Your distance to target was 1.6m! What lens were you trying to calibrate?


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hollis_f
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Feb 06, 2013 15:54 |  #54

Bakewell wrote in post #15580173 (external link)
To all the people that use this software and think it's great and claim that any problems must be user generated, are you saying that when you calibrate you continually receive the same adjustment figures for the same lenses? Have you ever re-calibrated the same lens twice immediately...and always receive the same numbers?

Yup. With my 300 f2.8 I've run it through FoCal at least three times (trying different versions) and always results the same as, or very close to, the results I to when doing the calibration manually (twice).

But then I do calibrate using sensible distances and sufficient light.


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Bakewell
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Feb 06, 2013 15:54 |  #55
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hollis_f wrote in post #15580284 (external link)
Your distance to target was 1.6m! What lens were you trying to calibrate?

I believe the software recommends the lens be calibrated at the distance you tend to use it at. Calibration varies by distance...there is a different number for each distance.


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hollis_f
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Feb 06, 2013 15:57 |  #56

Bakewell wrote in post #15580296 (external link)
I believe the software recommends the lens be calibrated at the distance you tend to use it at.

OK, I'll rephrase the question.

What lens do you use mainly at a distance of 1.6 m?


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05Xrunner
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Feb 06, 2013 15:58 |  #57

It's a 30mm prime. But once again if its to far away then why does it validate my image.


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Bakewell
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Feb 06, 2013 15:59 |  #58
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hollis_f wrote in post #15580311 (external link)
OK, I'll rephrase the question.

What lens do you use mainly at a distance of 1.6 m?

Regardless the number should be the same at equal distances. Consistency is lacking...except for Frank.


Dave

  
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Ouessant
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Feb 06, 2013 16:04 |  #59

Normally you have to calibrate at focal length x 50.
For a 30mm prime, that would be 1,50m. So 1.6m is okay.


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Bakewell
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Feb 06, 2013 16:06 |  #60
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Ouessant wrote in post #15580335 (external link)
Normally you have to calibrate at focal length x 50.
For a 30mm prime, that would be 1,50m. So 1.6m is okay.

This is Canon's recommendation...


Dave

  
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FoCal Calibration Software... A+ in my book
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