The lens-construction tag has no wiki summary.
12
votes
4answers
317 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?
6
votes
2answers
167 views
What are the constructional differences between a macro and a regular lens?
I understand that to reduce minimum focusing distances, macro lens design must focus on maintaining certain distances between the lens and the sensor.
However, is the placement of the lens and its ...
15
votes
2answers
530 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 ...
2
votes
1answer
590 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 ...
