OpticsEngineer

"...because of the mirror flipping up and down while taking pictures, you have a much noisier camera compared to mirrorless equivalents" You obviously do not have a Pentax K3 like I do.   It is a ...

Anti-reflection coatings on a lens work by the principle of interference of light that is traveling perpendicular to the direction that the light is traveling.   For a lens, the direction of light ...

(I’m a bit suspicious of ones from Japan: all those “mint ++++” descriptions can’t really be true, can they?) I have bought four fairly old lenses from Japan and all were in perfect condition.  I ...

I have a couple of beercans. And from your list I have the Minolta AF 2,8/80-200 APO G HS Sigma 70-200mm f/2.8 EX APO DG Macro HSM II Tamron SP 70-200mm f/2.8 Di USD Compared to the beercan, all ...

I see "lense" often enough that I do not notice it.  I am puzzled as to where it is coming from though.   Maybe from my German optical colleagues who would normally be writing "linse" and just ...

Here is a picture of my Z6II+24-200 and OM1+12-200 The experience of using the OM1+12-200 is that is a noticeably lighter and smaller.  Enough that I use my OM1 a lot and my Z6II hardly at all. I ...

The standard advice around here is to get the Sony RX100VII, and it is a fine camera. But in practice, I find myself agreeing with the comments in this article linked to below from dpreview. The ...

Since you have a lot of A-mount glass, you will benefit from a visit to the Sony website describing how each lens functions on various combinations of camera, adaptor and old lens. Most are marked ...

sounds like a marketing gimmick to me. lenses often don't have the exact focal length they are labeled as anyway.  Maybe the exact focal length is about 7.7 or 7.8.

V&V is validation and verification. The Wikipedia article is a decent introduction to it. I have spent a lot of my time on V&V for medical devices. Doing it efficiently takes a lot of planning ...

An idea behind your question is something people misunderstand a lot about optical fabrication. As an analogy, in mechanical design, we have 6-32 screws and 8-32 screws.  They are mass-produced and ...

I am not quite sure what you are asking.  But maybe it will clear things up a bit to say that in the context of photography, a “lens” is usually thought of as an assembly of many pieces of glass ...

I really like my Olympus OM1 and the lens you mentioned.   I don’t use it, but some do use the high resolution mode that combines images taken with a sensor shift for landscape photos. Because of ...

"So what really happens at the design phase of a new interchangeable lens product? (1) Designers pick and choose off-the-shelf lens elements to combine into one design, and just order those products ...

Pantheon, Rome

Main train station, Munich

from that list, I would get him the A6100 with kit lens when my 20 year old daughter went on vacation in Germany last year, she had her pick of all the various DLSRs and mirrorless cameras I have ...

as you said, last years black friday was nothing special   i expect very little from it this year

Awesome! We have been waiting for global shutter for a long time in a consumer oriented product.

Awesome! We have been waiting for this for a long time in a consumer oriented product.