NEW SR5 Rumor! 30mm f1.8!

Started Aug 6, 2012 | Discussions thread
EinsteinsGhost
EinsteinsGhost Forum Pro • Posts: 11,977
Re: NEW SR5 Rumor! 30mm f1.8!

gfrensen wrote:

EinsteinsGhost wrote:

While the 30mm (macro) and 50mm/1.8 are probably close adaptations of A-mount lenses for E-mount,

I doubt th 50mm is an adaptation of an A-mount lens: first the flange distance is dramaticly different, second there is OSS in the lens, third the focus system is different next the 1.8 A-mount lens has 6 elements in 5 groups, the E-mount 9 elements in 8 groups and last the build quality is different. Do how close can it be?

Adaptation is where you make adjustments for a mount with shorter flange distance, and compactness. Samyang Fisheye, a lens I mentioned earlier, is an example of that (one could argue the new E-mount 8mm/2.8 shares nothing with the older 8mm/3.5) but it does share the design principles (including pseudo-stereographic projection), and compacted with fewer elements and smaller glass size to fit the profile of these compact cameras.

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