Time to be with your loved ones

Time to be with loved ones

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16
votes
2answers
734 views

Do rounded edges on aperture blades improve image sharpness, and how?

In the description for the XF lenses for its new X-Pro system, Fujifilm crows: The [XF lenses] all offer precise control over depth-of-field and deliver excellent out-of-focus bokeh thanks to the ...
13
votes
4answers
470 views

Does Canon make an L series lens with a plastic lens mount?

An online retailer is telling me that Canon 24-105 f4L lens comes in two versions, the USA model with a steel lens mount and an import with a plastic lens mount. Is this true?
2
votes
1answer
1k views

How does the quantity of elements and blades in a lens affect the optics?

I am trying to get a greater understanding of how lenses work. Basically I bought this lens, the Sigma 10-20 f4-5.6: The construction has really fascinated me. 14 Elements in 10 Groups?! What ...