- #Calibrate sigma lens without dock update#
- #Calibrate sigma lens without dock manual#
- #Calibrate sigma lens without dock software#
When I have lighting issues that impact the Sigma's AF, there is always live view, which is not affected, and of course manual focus. For what it worth, the AF hit rate wide open with my Canon 50mm f/1.8 isn't much better. When stopped down, the hit rate is similar to my slower Canon lenses. When shooting wide open I try to focus on a point on the target when there is a sharp contrasting edge, if I can. Larger, high contrast subjects do much better. that percentage drops down to 65 to 70% depending on lighting, the size of the subject target, and the contrast of the subject. Nikon Z fc, Nikkor Z 16-50mm, Nikkor Z 40mm f/2, Nikkor Z 28mm f/2.8 (SE), Nikkor Z DX 18-140mm, Voigtlander 35mm f/1.2, Voigtlander 23mm f/1.2, DXO PhotoLab 5 Elite, DXO FilmPack 6 Elite, DXO ViewPoint 3Ĭonsidering I plan on using it a lot wide open, I will likely calibrate it at f/1.8. What aperture were you using to test the lens? If you were wide open, I would stop down to at least f/4 and see how it performs at that aperture. The dock won't do much to correct that since the corrections are based on focal length and distance, not the aperture used.
You may also find that while at say f/4 the AF is spot on almost of the time, at f/1.8 the AF is less consistent, sometimes front or back focusing just a bit. With 16 different setting to adjust for its a very very time consuming process. Luckily my copy needed a minimum of adjustment on my 60D.
#Calibrate sigma lens without dock software#
The software has minimal functionality and does nothing to assist you in the calibration process. If anyone else wants to chime in, it'd be appreciated. I will make a video to share my experience once done. It astounds me how little information there is considering how many people and reviewers rave about the Dock. I think I'm going to go with my gut and use the Dot Tune method. The AFMA in Canon cameras can only adjust the zero point. Remember this is just like alegebra calculating the slope of a line y = mx +b. So say at 18mm you find -10 at MFD and then moving out its -6, -2, +2. If the numbers are not the same, then you have a slope issue that could not be fixed without sending the lens to be calibrated in the shop before the new dock. Then test on a subject about 50 times focal length and see if the same AFMA value is the sharpest. If it is softer via phase detect, then compare the best of about 5 shots at -20,-15,-10 up to +20 and pick the sharpest MA. Dot tune works but I personally like to take a shot using live view contrast detect and compare to Viewfinder phase detect results. Like I said, use your 7D AFMA with a close subject near MFD and test. Yes you have 4 settings for subject distance times 4 focal lengths. Unfortunately this doesn't help me much the dock allows 16 MA variables. Oh and nice deal you got on the lens too!
#Calibrate sigma lens without dock update#
A put the screen shot of my final adjustments in the 18-35 sample thread.I would highly suggest saving a screen shot of the final adjustment screen just in case the lens reset the adjustment after a firmware update or anything. With that method it took me about an hour to go through all 16 adjustment values. I tried a couple different ways first but the method above is what worked best for me. When I fixed each focal length at a certain distance I'd move onto the next of focus distance. Once the focus was right I'd move onto the next focal length for that distance. Disconnet the lens from the dock, Re-mount the lens, and start the process over again until the focus was right on. If I had to correct focus by a lot then I made a larger adjustment then if I just had to tweak the focus a little. I'd do this several times to make sure it was infact front or back focusing.Īfter that I'd take the lens off the camera (that I had on my tripod), hook it to my computer, then just take an educated guess at how much adjustment was needed. I'd Take a shot, switch to live view, zoom in on live view and manually focus the lens to get proper focus (to check for front or back focus). I calibrated my 18-35 with the dock manually.īasically I just set up the target at each distant shown in the calibration software.
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