Swiftler
New member
So I went through the process of fine tuning 2 of my lenses on my new D850 today and am a bit perplexed. I decided to do it because I was shooting some moths on some leaves yesterday in the backyard using my 24-120mm @120 and was noticing that the focus was clearly off. I figured that since I would have the system setup for calibration I might as well test both of my lenses. The 2 lenses I calibrated are the Nikon 200-500mm and of course the Nikon 24-120mm. The 200-500mm did not have any noticeable misses so I didn't expect much from the fine tuning. Below are the averages for the extremes of the zoom ranges after completing 10 Auto Tunes for each range.
Nikon 200-500mm @200 = -2.1
Nikon 200-500mm @500 = +0.3
Nikon 24-120mm @24 = +5.6
Nikon 24-120mm @120 = -15.8
I know Steve's video says that if working with a zoom lens to just average the 2 values and manually set it, or favor one end more if you tend to shoot at that focal length more often. Clearly the 200-500mm doesn't need much adjustment if any at all since I shoot mainly at 500mm. I am really confused on the 24-120mm. There is such a huge difference between the 2 focal lengths and I use that lens throughout the entire range. Any advice from those who have experienced similar results?
Nikon 200-500mm @200 = -2.1
Nikon 200-500mm @500 = +0.3
Nikon 24-120mm @24 = +5.6
Nikon 24-120mm @120 = -15.8
I know Steve's video says that if working with a zoom lens to just average the 2 values and manually set it, or favor one end more if you tend to shoot at that focal length more often. Clearly the 200-500mm doesn't need much adjustment if any at all since I shoot mainly at 500mm. I am really confused on the 24-120mm. There is such a huge difference between the 2 focal lengths and I use that lens throughout the entire range. Any advice from those who have experienced similar results?