Large aperture lenses

Started 6 months ago | Discussions thread
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Belgarchi Senior Member • Posts: 1,886
Large aperture lenses

As a general rule (oups, don't kill me all) good lenses behave like this:

- Max aperture f/2.8 or f/4.0: usable at full aperture, but for non-Apo tele lenses a lot of C.A.

- Max aperture f/2.0: barely usable at f/2.0, less vignetting and slightly better in the corner at f/2.8 and f/4.0. More expensive, heavier.

Max aperture f/1.4: not usable at f/1.4, very good results at f/2.0 and excellent at f/2.8

Even more expensive and heavy.

Except for very special cases, it looks to me that the light, cheap, small aperture lenses are more logical, with a camera able to get good results at ISO 1600 or more, and equipped with sensor stabilization. M43 cameras with no stabilization do need large aperture lenses though, but they are becoming rare.

 Belgarchi's gear list:Belgarchi's gear list
Panasonic Lumix DMC-FZ300 Leica D-Lux 7 Olympus PEN-F Fujifilm X-T20 Pentax KP +82 more
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