(The Live View contrast-detect AF is an entirely separate system that works at the live view aperture.)įourth, if you look at the EXIF you will see that the camera "believes" a Nikon 50mm f/1.4G lens is mounted. Third, even though you set the lens to f/1.4 and the diaphragm is definitely fully open, the PDAF system is functioning at roughly f/5.6. Second, both these lenses have some focus shift (away from the camera) as they are stopped down, the older lens much more. The older lens cannot be used with the dock, and you must rely on the single camera adjustment. First of all, do you have the big, expensive ART lens or the older f/1.4? If the former, set the camera adjustment back to zero and get the dock for it for sure. Hey, Denny, welcome to a complicated world. And if it takes +5 to adjust for the closest distance does not mean it will be +5 or whereabouts for all other distances. Just get it as close as possible.Īlso note that just because your lens front focus at closer distances does not mean it will front focus at infinity. So take a picture and examine where the actual focus falls and adjust it accordingly but remember it is not going to be precise because there is no way to measure at infinity. I focused across the street when I was doing my 35mm F1.4 art.Īnother way to do it is to focus (on tripod) across the street (on something like a house number) and then set your lens in Liveview and focus again while looking at the distance scale on the lens. Infinity could be a long distance away like 30 meters so Lensalign is not going to help. First of all there is no target as such that will give you perfect indication if you are focusing right. But remember each distance has to correspond to software. Once first distance is set, go to the next one. If +5 helped a lot and you feel that another +1 or 2 or 3 will fix the problem, do it. If you have other lenses (Nikon) and you had to use large numbers to correct I would suggest sending camera to Nikon for alignment. Either your camera is out of standard or your lens. Now, if +5 or +10 does not change much that could mean two things. Nikon adjustment does not correspond to Sigma. Even if it front focus again it should be better (closer to ideal) so adjust in small steps like +1 or 2 at the time. It will probably front focus so try +5 first. Compare all 3 and see if focus spot is the same even if it is off.Ĭonnect back to the dock. I don't have this particular lens but I think it would be. Or you can buy or make something like Lensalign. Set you target ( angled ruler at 45 degrees with a good spot somewhere in the middle to focus on, spot has to be like a cross and not round) and focus on it from the distance that corresponds on the lens and software. If it is download and install.Īs you can see that distance window on the lens corresponds to software look. Once you install software and connect to the lens first see if firmware update is available.
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