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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 07 May 2013 (Tuesday) 17:16
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Lens Calibration Software: Worth it? Free options?

 
HiepBuiPhotography
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May 09, 2013 15:07 |  #16

Ummm, if sarcasm's intended, then I think he failed. Haha.


Hiep Bui Photography | Harrisburg Wedding Photographer (external link)

  
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dpds68
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May 10, 2013 18:11 |  #17

I have been thinking about giving the Dot Tune method a try I don't think that I have any problems with any Lens just want to check one of them , I have read and looked at the Dot Tune Video but still confused about something , when checking from 0 - +1 , +2 , +3 etc do I stop when I get a solid confirmation before doing 0- -1 , -2 , -3 etc or do I continue as I saw in the vid that he kept going after getting a solid light and it was not mentioned in any of "what I read" .

It was really late last night when I went through the vid .

Thank you in advanced

David


Gripped Canon 7D,20D,XT / Tamron 17-50mm 2.8, Canon 85mm f1.8 , 70-200 2.8L,EF50mm1.8 II,Sigma 150-500mm OS, Sigma 105mm 2.8 Macro, Sigma 10-20mm 4-5.6
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Sgt.Ed
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May 11, 2013 08:26 as a reply to  @ dpds68's post |  #18

David
You stop when you no longer get a solid confirmation light.
Ed


Ed
GEAR40D, 1D MKIV, 24-70 f2.8L, 70-200 f2.8L, 500 f4.0L, Canon 1.4 teleconverter, 580 EXII Speedlite, Gitzo GT 3530LS, Wimberly WH-200, 190X PROB Manfrotto tripod and a bunch of other stuff
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pulsar123
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May 11, 2013 09:58 |  #19

The signal should be solid, with no blinking, for the whole time you're pressing the shutter (the video recommends pressing for 5s, but Magic Lantern does 1s, but it also repeats the whole test 4 times).

Magic Lantern will produce more accurate measurements. The reason for that is in many cases the "good interval" extends beyond the extreme MA values (-20 or +20), meaning you will only measure a fraction of the interval, meaning your median value will be wrong. ML can access extended MA ranges - -40...+40 (the most useful) and even -100...+100 (only for extreme cases). It also does the whole calibration extremely fast - 1minute or less, testing all the values -40...+40 four times, and then automatically computes the median and modifies the MA for this lens accordingly.

I believe dot-tune is already available for 7D, in their alpha nightly release.


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

  
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dpds68
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May 11, 2013 12:04 |  #20

Thank You all


Gripped Canon 7D,20D,XT / Tamron 17-50mm 2.8, Canon 85mm f1.8 , 70-200 2.8L,EF50mm1.8 II,Sigma 150-500mm OS, Sigma 105mm 2.8 Macro, Sigma 10-20mm 4-5.6
Vivitar285Hv x2,Canon430EX,Nissin Di866,CTR-301P Triggers,
http://www.flickr.com/​photos/dpds68/ (external link)

  
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Lens Calibration Software: Worth it? Free options?
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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