Hello,
Anybody tried this lens ?
http://www.ukaoptics.com/new_top-29.html
I called them, lens price is $83, adapter - $30.
Mounting also available:
Saul
"Top-29 Very High Res Lens"
Moderators: rjlittlefield, ChrisR, Chris S., Pau
"Top-29 Very High Res Lens"
Last edited by Saul on Fri Feb 01, 2013 10:00 am, edited 1 time in total.
-
- Posts: 3439
- Joined: Sat Nov 20, 2010 10:40 am
- Location: Santa Clara, CA, USA
- Contact:
- rjlittlefield
- Site Admin
- Posts: 23625
- Joined: Tue Aug 01, 2006 8:34 am
- Location: Richland, Washington State, USA
- Contact:
I have no experience with this lens. 6 elements and coated, is a good sign. The +-5% spec for focal length seems large; I don't know what to make of that. I wouldn't worry too much about the corner falloff because that looks to be specified at infinity focus. For macro use you'd reverse the lens at probably 5X and then on APS-C you'd be using only about the central 4.5x3 mm of the nominal 8.8x6.6 mm field.
--Rik
--Rik
- enricosavazzi
- Posts: 1478
- Joined: Sat Nov 21, 2009 2:41 pm
- Location: Västerås, Sweden
- Contact:
The optical scheme seems to be a double-Gauss made slightly asymmetric, so the lens may be optimized for infinity or closer-than-infinity focusing distance and a magnification different from 1x (as opposed to 1:1 reproduction, which typically uses a wholly symmetric design). This also means it may be worth testing the lens in both orientations to find out which is better for a given magnification.
--ES