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 Re: Really dislike the size of these lenses | |
az-dave wrote:
When I compare the size of the 50mm 1.8G against the 50mm 1.8Z it looks like the 1.8Z has a built in FTZ adaptor to keep the lens the same distance from the sensor.
Because of the very large Z-Mount flange diameter, I think lenses for the Z-Mount will pretty much always be larger and heavier than that the same lens design for small flange diameter mounts like the Sony E-Mount. If what is desired is the smallest, lightest, lens of a particular optical performance, the Z-Mount has designed itself into sort of a corner.
Let's use the excellent Voigtlander line of lenses as an example of this. Voigtlander is a good comparison tool because it has made the exact same optical design lenses for both E-Mount and Z-Mount. Many of the lenses were direct ports over to the Z-Mount from the E-Mount (or M-Mount) counterparts. For these you will see the added diameter weight and size embodied in what looks to be a built in adapter as you noticed in your Nikon 50mm 1.8G example.
Sony E-Mount versions: https://www.voigtlaender.de/lenses/e-mount/?lang=en
Nikon Z-Mount versions: https://www.voigtlaender.de/z-mount/?lang=en
For those lenses with optical designs that already exceed the diameter of the Z-Mount, you will see the full body without what appears to be an adapter. But, those lenses are also significantly larger that their E-Mount counterpart. Let's take the very good Voigtlander NOKTON 50mm F1.2 Aspherical as an example. It is significantly larger and heavier.
E-Mount Version Length = 58.8mm Diameter = 70.1mm Weight 434 grams
https://www.voigtlaender.de/lenses/e-mount/50-mm-112-nokton-e/?lang=en
Z-Mount Version Length = 66.6 mm Diameter = 70.1mm Weight = 598 grams
https://www.voigtlaender.de/z-mount/50-mm-11-0-nokton/?lang=en
It seems to me that if size and weight are primary criteria for selecting a camera system the the Z-Mount may not be your first choice. This seems to be true even if the same levels of optical performance are desired.
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