You asked
Can I adapt the voigtl nder super wide heliar 15mm f 4 5 aspherical iii to sony e?
Here is what the site says about that.
From Voigtländer Super Wide-Heliar 15mm f/4.5 Aspherical III: Voigtländer Super Wide-Heliar 15mm f/4.5 Aspherical III: A prime lens by Voigtländer for Full frame cameras, 15mm f/4.5. Specs - Maker: Voigtländer - Focal length: 15mm (prime) - Maximum aperture: f/4.5 - Made for: Full frame sensors - Mounts: Sony E, Leica M, Nikon Z - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Leica M, Nikon Z): as marked, 15mm. - On APS-C (Sony E, Nikon Z): ...
From Lenses: Aperture: The f-number says how wide the lens opens. Smaller numbers let in more light: f/1.8 lets in about ten times as much light as f/5.6, more than three stops. A wide aperture means faster shutter speeds in dim light and more background blur. Zooms with a constant aperture, like a 24-70mm f/2.8, keep the same exposure throughout the zoom range; cheaper zooms get darker as you zoom in.
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