Any interest in a line of Prime Landscape lenses?

Started May 13, 2013 | Discussions thread
brightcolours Forum Pro • Posts: 14,924

Canyongazer wrote:

As we know, most lenses hit peak performance when stopped down two or three stops from max aperture.  Coupled with the desire of, admittedly most, for big holes when wide open, this leads to largish, heavy lenses with best performance typically at about f 4. It also means great Depth of Field is gained at the expense of inferior lens performance.

Hmm, Which lenses have best performance at f4? Lenses usually do not have best  performance wide open. When you close down, many lens elements only use a central part, improving sharpness. But it is DIFFRACTION which lowers resolution when you close down more and more. Diffraction caused by the small hole the light has to pass through, and the distance of that aperture which influences how big the diffraction impact will be.

Since most landscape photographers often prefer to be in f 8 to f16 territory and favor smaller, lighter gear, would they --- would you --- be attracted to a Landscape Series of primes with maximum apertures of f 4?

Only for the weight loss.

These lenses could be small, light, high performers peaking at, perhaps, f 11 for the shorter, f 16 for the longer ones.

Impossible. The only reason your above example lens loses resolution above f4 (wonder which camera has such high res. that f4 will show max. resolution...) is due to diffraction. You can't have lenses that show no diffraction softening at f11 or f16.

They should be relatively easy to design and build, selling for significantly less than their f 1.4 / f 2 counterparts.

20, 30, 50, 90mm?

Perhaps it would represent too small a potential market for Nikon or even Sigma. Perhaps not.

Voigtlander? Zeiss?  They don't even have to be autofocus.

What do you think?

I think you just do not have enough knowledge about lenses, and are oblivious to what diffraction is and does. Which is not bad, there are many things I do not know either. But yeah. read up on what diffraction is, and how it lowers resolution.

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