Home
SearchSearch MemberlistMemberlist RegisterRegister ProfileProfile Log in to check your private messagesLog in to check your private messages Log inLog in

Modofied G-Biogon 2.8/21mm w M8 + UV/IR filter
View previous topic :: View next topic  


PostPosted: Sat Oct 18, 2008 5:57 pm    Post subject: Modofied G-Biogon 2.8/21mm w M8 + UV/IR filter Reply with quote

Here is my modified to M-mount G-Biogon 2.8/21mm, and some test shots.

The modified lens looks this w UV/IR cut filter (55mm) without a hood and Cosina's ext. finder 28/35


It can be focused up to 0.8m, the rest can be done by guessing up to 0.3m


The above two shots are developed PSElement with Raw.plugin 4.5 (can handle D700's raw's)
with AUTO mode, all were shot @f8 hand-held with Makro-Planar 2/50 ZF + D700.

Here is some boring shots, the lens is quite good modestly speaking Very Happy all @f4


focused @people


The above three shots are processed by ConerFix(tm) first to eliminate Cyan shift
(actually red vignetting), then developed by C1v4 (Capture One version 4). It has
default USM (130,0.8,0), other option used to develop raw's are in all auto mode.

The followings are 100% crops of the above three photos (centre and corner pairs)




trees are out of focus



Last edited by koji on Sat Oct 18, 2008 7:16 pm; edited 1 time in total


PostPosted: Sat Oct 18, 2008 6:00 pm    Post subject: Reply with quote

WOW! Shocked


PostPosted: Sat Oct 18, 2008 6:06 pm    Post subject: Reply with quote

Shocked Seems my next dream camera is a Contax G1+ Biogon 21mm Embarassed Thank you for sharing!


PostPosted: Sat Oct 18, 2008 6:46 pm    Post subject: Reply with quote

Great samples, and the lens does not surprise me Wink


PostPosted: Mon Oct 20, 2008 8:16 pm    Post subject: Reply with quote

Shocked
That is quite a lens!
The modified mount looks really cool on the M Cool
Good to see you are home safe and sound Koji

Very Happy


PostPosted: Mon Oct 20, 2008 8:40 pm    Post subject: Reply with quote

A question: you always have to photograph with a red filter in front of the lens with a M8?


PostPosted: Mon Oct 20, 2008 8:48 pm    Post subject: Reply with quote

great lens! nice samples!


PostPosted: Mon Oct 20, 2008 8:51 pm    Post subject: Reply with quote

@Sandy
Thanks, I am OK. Very Happy

@Orio
Yes, I do. Without this UV/IR cut filter, UV/IR sensitive M8 gives you
funny colour shifted results. For wider lenses such as Biogon 21mm,
you might have to fix red colour vignetting too, if your lens does not
have 6-bit code which helps M8 to compensate red vignetting. Shocked