Need Good Wide Angle Lens for Yosemite

Started Aug 11, 2012 | Discussions thread
gregg_1 Forum Member • Posts: 71
Re: Need Good Wide Angle Lens for Yosemite

I appreciate the thought. You might not know, (it would probably still be useful to present some info on) the Olympus G. Zuiko Auto-W 1:2.8 f=25mm was one of several lenses produced for the Olympus Pen F, FT, & FV series of cameras.

“The Olympus Pen F, Pen FT and Pen FV were very similar half-frame 35 mm single-lens reflex (SLR) cameras with interchangeable lenses produced by Olympus of Japan between 1963-1966 (Pen F), 1966-1972 (Pen FT) and 1967-1970 (Pen FV). … .. Half frame meant that the camera used a 18×24 mm vertical (portrait) format "

PEN-F half-frame is 18mmx24mm, NEX APS-C is 23.4mm×15.6mm, The Olympus G. Zuiko Auto-W 1:2.8 f=25mm was a lens made for the Pen F, FT, &FV and when used on a NEX APS-C there is no crop factor.

And this is what I said -

The Olympus G. Zuiko Auto-W 1:2.8 f=25mm has about the same field of view as Sony E 16mm f/2.8 on the NEX 5 which has an APS-C sensor and with a crop factor 1.5 ref (2) & ref(3) can be relevant in understanding.

(1) “The field of view (which is what "wide" is all about) is actually determined just as much by format size as by focal length.”

(2) “Because of this crop, the effective field of view (FOV) is reduced by a factor proportional to the ratio between the smaller sensor size and the 35 mm film format (reference) size.”

(3) “The Sony E 16mm f/2.8 is a so-called "pancake" lens for the Sony NEX system. The field-of-view is equivalent to a classic 24mm full format lens”

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