The Rodin AF-S focus with fine focus adjust page showed serious autofocus errors with a 3D subject and the 85/1.4G. The AF-C mosaic test also showed substantial errors with both the 85/1.4G and 85/1.8G.
This page shows both the Nikon 85/1.4G and 85/1.8G.
Here we throw the D800 a bone, and give it a subject with no 3D challenge at all— a flat surface. Along with AF-S single shot mode with AF-S priority selection = Focus. AF Fine Tune = 0 was used for this test. Test protocol is detailed at the bottom of this page.
We are actually interested in several ideas here:
- Does the D800 focus accurately and consistently using its center AF focus point?
- Is there a difference in focus accuracy and consistency off-center?
- Is there a difference using focus points on the left versus right?
- Is there a difference between the 85/1.4G and 85/1.8G?
- Is contrast-detect autofocus fully accurate?
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