Go Back   Rangefinderforum.com > Search Forums

Showing results 1 to 4 of 4
Search took 0.00 seconds.
Search: Posts Made By: Freakscene
Forum: Optics Theory - 06-01-2019
Replies: 57
Views: 3,197
Posted By Freakscene
The newest Sony lenses are made using improved...

The newest Sony lenses are made using improved polishing techniques for aspherical elements, at least in part to avoid onion ring...
Forum: Optics Theory - 04-03-2019
Replies: 57
Views: 3,197
Posted By Freakscene
In camera lenses, the Pentax 43mm f1.9 doesnít do...

In camera lenses, the Pentax 43mm f1.9 doesnít do it, in my experience. That doesnít mean it canít.

Hoya, who owns Pentax, holds a lot of patents about production of aspheres.

Marty
Forum: Optics Theory - 02-06-2019
Replies: 57
Views: 3,197
Posted By Freakscene
It is not due to the geometry of the lens. They...

It is not due to the geometry of the lens. They are the result of marks on the aspherical element from the manufacturing process. They still appear in monochrome.



Most camera aspherical lens...
Forum: Optics Theory - 02-05-2019
Replies: 57
Views: 3,197
Posted By Freakscene
Like Vienna...

Like Vienna (https://www.youtube.com/watch?v=xJeWySiuq1I) it means nothing to me.

It strictly means that one or more of the lens element surfaces are, as pointed out, made with multiple radii of...
Showing results 1 to 4 of 4

 


All times are GMT -8. The time now is 12:42.


vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

All content on this site is Copyright Protected and owned by its respective owner. You may link to content on this site but you may not reproduce any of it in whole or part without written consent from its owner.