A Photography forum. PhotoBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » PhotoBanter.com forum » Photo Equipment » Large Format Photography Equipment
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Lens Cell Cleaning



 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #19  
Old February 16th 11, 02:18 AM posted to rec.photo.equipment.large-format
Richard Knoppow
external usenet poster
 
Posts: 751
Default Lens Cell Cleaning


wrote in message
...
On 2/13/2011 3:22 PM, Richard Knoppow wrote:

However, the Geronar is a Cooke Triplet, a
three-element, air-apaced lens with no cemented surfaces.
Its of high quality and such lenses are capable of good
performance at moderate stops.


From my use, it's a very nice lens given a bad rap mainly
because it was sold at a low price as a "novice lens". Who
wants that when you can buy a pro lens? :P

It's multicoated, comes in a modern, reliable shutter and
is small/lightweight. It actually folds up in my super
graphic.

Given most LF lenses are used around f22, the wide open
edge performance isn't an issue for most people. I've
actually done some portraits with mine on 4X5 at f11 and
they look great. The only disadvantage I see with this
lens is the smaller image circle compared to the much
Larger/heavier/more expensive plasmat types. If I had to
choose this over some vintage lens that has questionable
coatings and flaky/ancient shutter, I would get this one
in a heartbeat.

Stephey

A carefully designed Triplet is capable of excellent
performance and Rodenstock is noted for making good lenses.
I am not sureprized it works well. Somewhere around f/22 is
the "optimum" stop for many LF lenses. The limit of a
Triplet is that they are hard to correct for either high
speed or wide angle, if it isn't required to be either it
can perform entirely satisfactorily.


--
--
Richard Knoppow
Los Angeles, CA, USA



 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lens Cell Cleaning [email protected] Large Format Photography Equipment 0 February 10th 11 02:24 AM
Lens Cell Cleaning David Nebenzahl Large Format Photography Equipment 0 February 9th 11 02:27 AM
"This is good news for all cell phon user "Earn mony by ur cell phone pavan prabhat Digital Photography 0 May 24th 07 08:18 AM
fog inside lens cell Stacey Large Format Photography Equipment 9 August 12th 04 05:51 AM
Your thoughts on cell interior cleaning Collin Brendemuehl Large Format Photography Equipment 4 May 12th 04 05:09 AM


All times are GMT +1. The time now is 12:25 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 PhotoBanter.com.
The comments are property of their posters.