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Archive 2012 · Lens Calibration Assistance
  
 
johnny_xb
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p.1 #1 · p.1 #1 · Lens Calibration Assistance


Looking to see if anyone in southern california performs lens calibration services aside from Canon? I would like to get my Canon 28-70 2.8L and Canon 50mm 1.4 MA calibrated with my 50D. I would send it to Canon, but don't really want to pay and arm and a leg for the services. I'm not a pro by any means and I am someone new to this hobby. I wasn't sure if this was something a member on here performs to make a few bucks off to the side. Thanks everyone for any suggestions.


Dec 07, 2012 at 09:38 AM
CW100
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p.1 #2 · p.1 #2 · Lens Calibration Assistance


have you tired the micro adjust feature?




Dec 07, 2012 at 02:00 PM
johnny_xb
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p.1 #3 · p.1 #3 · Lens Calibration Assistance


I have but I don't have anything to adjjust the calibration by. Seems there was some improvement.


Dec 08, 2012 at 09:54 AM
John P Mulgrew
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p.1 #4 · p.1 #4 · Lens Calibration Assistance


People on here recommended this to me and it works

http://www.reikan.co.uk/focalweb/index.php/versions/focal-pro/



Dec 08, 2012 at 10:41 AM
 

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John_T
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p.1 #5 · p.1 #5 · Lens Calibration Assistance


I think you mean 24-70 2.8L, a lens for which you can have pretty high expectations.

The 50 f/1.4 is not of the same caliber, so while it can be very sharp at mid apertures, it is not very good, especially in the corners, at other apertures. It can also be inconsistent in auto focusing.

So my suggestion is to examine the characteristics of your gear first, then explore what might make it perform better. Calibration will adjust where the plane of focus falls, but will in no way improve your lens optics.

Here are a couple of sites where you can read test reports on the gear you have:

http://slrgear.com/reviews/showproduct.php/product/143/cat/11

http://www.the-digital-picture.com/Reviews/Canon-EF-50mm-f-1.4-USM-Lens-Review.aspx




Dec 08, 2012 at 11:10 AM
qburke
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p.1 #6 · p.1 #6 · Lens Calibration Assistance


If you don't want to purchase the software to assist in micro adjusting your lenses, try this - I use it and I think it works great. It sounds confusing, but once you work through it, it's pretty simple:

https://sites.google.com/site/vincenzomiceli/quantitative-micro-focus-adjustment-for-dslrs



Dec 08, 2012 at 07:34 PM
BrianO
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p.1 #7 · p.1 #7 · Lens Calibration Assistance


johnny_xb wrote:
I [tried AF Adjustment] but I don't have anything to adjjust the calibration by. Seems there was some improvement.


Try this:

http://focustestchart.com/focus21.pdf



Dec 09, 2012 at 02:42 AM





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