Thoughts on the TECHART TZM-02 with my 90 Elmarit-M
Overall, I like the unit very much on my Z6ii or Z8 but sometimes AF isn't very good at locking in when there isn't sufficient subject contrast/brightness especially indoors. However, I prefer using the MF mode with focus peaking that allows quick visual confirmation throughout the entire focus range and the focus distance is displayed on the lens' scale. Additionally, the focus box still switches color from red to green and the electronic rangefiner dot confirmation (in the lower left corner) appears when focus is spot on. Fortunately, the unit alway retacts for correct infinity focus when the camera is shut off. Don't forget to set the body's aperture control to F/1.1 for 90mm lenses to take advantage of the camera's IBS and EXIF data. Of course in MF mode, older heavier 1st or 2nd generation Summicrons still work great because you aren't stressing the 4 tiny AF motors. Compared to the Leica M EV1, the setup behaves the same or even better. However, remember the Leica M EV1 holds the final advantage over non-Leica digital bodies as it's sensor coverglass is much thinner than others thus retaining sharpness at the corners and edges for Leica M lenses at apertures wider than f/5.6.
Thoughts on the TECHART TZM-02 with my 90 Elmarit-M
Overall, I like the unit very much on my Z6ii or Z8 but sometimes AF isn't very good at locking in when there isn't sufficient subject contrast/brightness especially indoors. However, I prefer using the MF mode with focus peaking that allows quick visual confirmation throughout the entire focus range and the focus distance is displayed on the lens' scale. Additionally, the focus box still switches color from red to green and the electronic rangefiner dot confirmation (in the lower left corner) appears when focus is spot on. Fortunately, the unit alway retacts for correct infinity focus when the camera is shut off. Don't forget to set the body's aperture control to F/1.1 for 90mm lenses to take advantage of the camera's IBS and EXIF data. Of course in MF mode, older heavier 1st or 2nd generation Summicrons still work great because you aren't stressing the 4 tiny AF motors. Compared to the Leica M EV1, the setup behaves the same or even better.
Feb 03, 2026 at 11:41 PM
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