D800 fine focus adjust πŸ€”

Started 4 months ago | Discussions thread
larrywilson
larrywilson Veteran Member • Posts: 7,007
Re: D800 fine focus adjust πŸ€”

Vertical target next to a slanted ruler or scale, fast lens wide open, tripod, shutter delay and tripod.  Be sure to have the camera sensor level with your target.  Shoot a good target, then look at ruler or scale at 100%.  I would shoot in 5 increments such as +20, +15, +10, +5, 0, -5, -10, -15, -20, then project on your computer monitor at 100%.  If needed pick the best two and refine in single increments.  This method works for me for fairly short focal lengths, with long lenses I chose my wood fence which in at an angle to me and focus on a screw in the fence.  I then look at image at 100% looking for a front focus problem or back focus problem and adjust af fine tune as needed.  The final check for focus on any lens is checking focus on real subjects and adjusting if needed.

Larry

 larrywilson's gear list:larrywilson's gear list
Nikon D850 Nikon AF-S Nikkor 70-200mm F4G ED VR Nikon AF-S Nikkor 500mm F4E FL ED VR Tamron SP 85mm F1.8 Di VC USD Tamron SP 150-600mm F5-6.3 Di VC USD G2 +6 more
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