Street photography with Canon 35mm f/1.5 LTM








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The Tiny All-rounder: Leica Elmar 90mm f/4.0 3-element Review

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Table Of Contents ✓ Introduction Leica's first Elmar 9cm (90mm) f/4.0 was introduced in 1930. The lens construction was very similar to that of the Zeiss Tessar, with the main difference being that the Elmar had the aperture positioned in front of the second lens element. After several cosmetic changes, the optics of the popular Elmar 90mm lens remained unchanged until the early 1960s. In 1962, a new version of the Elmar 90/4.0 was released, designed by Walter Mandler in Canada using newly invented rare-earth glass, which elevated the performance of this classic lens to another level. Lens Versions There is only one version. It comes with either a Leica M mount (11830) or a Leica screw mount (11830). Leica Elmar 90mm f/4.0 3-element M mount Lens Specifications Lens mount: Leica M Focal length: 90mm Aperture adjustment: f/4.0–f/22 (with half-stop clicks) Number of aperture blades: 10 Minimum focus distance: 1 meter Filter size: E39 Hood: IUFOO or 12575 Weight: ~220g Leitz Sales...
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Techart TZM-02 Leica M to Nikon Z Autofocus Adapter Review

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  The second-generation Leica M to Nikon Z AF lens adapter TZM-02 from Techart will be officially released soon. I am fortunate enough to borrow this engineering sample for testing, let’s see how the autofocus performs. Table Of Contents ✓ Specification: Weight: ~150g Diameter: ～68mm *Compatible with all the latest Nikon Full Frame & APS-C camera models (Z9, Z7II, Z7, Z6II, Z6,Z5, Z50, Zfc, Z30, etc) *not applicable to LTM/M mount lenses with a infinity lock button near the lens mount In-Body Image Stabilization (IBIS) Settings By adjusting the aperture value, we can change the focal length value transmitted to the camera to obtain better image stabilization. The relationship between the aperture value and the focal length value transmitted is shown on the following table: Aperture Value(F) 1.0 1.1 1.2 1.4 1.6 1.8 2.0 2.0 Lens Focal Length(mm) 135 90 85 75 55 50 40 30 Aperture Value(F) 2.5 2.8 3.2 3.5 4.0 4.5 5.0 5.6 Lens Focal Length(mm) 28 25 24 21 20 18 16 ...
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