Support our Sponsors, they keep FADU free:   AG Photographic   The Imaging Warehouse   Process Supplies   RH Designs   Second-hand Darkroom Supplies  

Notices

Go Back   Film and Darkroom User > Site Forums > Introductions

  ***   Click here for the FADU 2015/2014 Yearbooks   ***

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 17th November 2023, 02:56 PM
MartyNL's Avatar
MartyNL MartyNL is offline
Friend
 
Join Date: Sep 2010
Location: based in The Netherlands
Posts: 3,332
Default

Quote:
Originally Posted by Dave Woodhead View Post
Wow so many responses! Thanks all. So I need to buy a lens to cover 6x7, enlarging to a maximum of 16x20 but usually just 10x12. Would an 80mm cover the diagonal sufficiently? Or do I need something longer. As well as RZ67 I shoot square with Minolta Autocord, so a lens that works well for both would be ideal. I don't do 6x9.
80mm would be perfect up to 6x7cm.
Apo's tend to be very expensive but try to get a 6 element lens, if you can.
__________________
MartyNL

“Reaching a creative state of mind thru positive action
is considered preferable to waiting for inspiration.”
- Minor White, 1950
Reply With Quote
  #12  
Old 17th November 2023, 05:36 PM
Martin Aislabie's Avatar
Martin Aislabie Martin Aislabie is offline
Friend
 
Join Date: Nov 2008
Location: Stratford-upon-Avon, England
Posts: 2,069
Default

Schneider and Rodenstock make excellent 6 element 80mm f/4 enlarging lenses.

You can buy a 80mm f/4 Rodenstock Rodagon for £450 brand new (Linhof Studio) or £250 ish second-hand (Second Hand Darkrooms - FADU sponsor)

According to Rodenstocks data, the Rodagon is equal to the resolution performance of the APO lens without quite the same level of colour correction (but there isn't much in it).

For an APO, you are looking at about £1000 new and £650 second-hand.

I'm not sure what extra you get with an APO lens - perhaps very marginal improvements in the reduced colour fringing in very very large colour prints, if examined very closely with a Lupe.

You can use the 80mm enlarging lens for 35mm negatives - but you will end up with only being able to produce smaller prints.

Ideally you would buy a 50mm enlarging lens for 35mm stuff - but that can wait if you are on a budget.

Martin
Reply With Quote
  #13  
Old 17th November 2023, 09:00 PM
MattKing MattKing is offline
Friend
 
Join Date: Apr 2016
Location: Delta, BC, Canada
Posts: 112
Default

Most of the good 80mm lenses are designed to cover the 6x7 format. If you are considering something unusual, ask.
In case you are looking for other accessories, it may be helpful to know that in the USA, and effectively as a result often in Canada, your enlarger is often badged as a Omega or Saunders LPL 670MX. Here is the KHB Photografix web page for it: http://www.khbphotografix.com/LPL/LPL7700series.htm
Reply With Quote
  #14  
Old 18th November 2023, 01:11 PM
Terry S Terry S is offline
Friend
 
Join Date: Dec 2011
Location: Southend on Sea, Essex, England, UK
Posts: 3,757
Default

After Martin's suggestions for lenses, I had to read his message again. Personally I won't be buying any of the lenses at the prices that he mentions. My pockets aren't that deep.

I bought a couple of new lenses for my enlarger, which does up to 6x6 a few years ago off eBay UK. I bought two Nikon lenses, a 50mm and an 80mm lenses for under £50 each and I often use them wide open at f4 for older and denser negatives from times past and they are pin sharp across the image.

Just looking on the site, there are a good number of 80's under £50 and I would expect a 50mm lens to be cheaper still.

Happy browsing.

Terry S
Reply With Quote
  #15  
Old 18th November 2023, 08:53 PM
Wind on Allen Wind on Allen is offline
Friend
 
Join Date: Dec 2021
Location: Boston, Lincs
Posts: 70
Default

Hello and welcome
Reply With Quote
  #16  
Old 19th November 2023, 06:41 PM
JOReynolds JOReynolds is offline
Friend
 
Join Date: Nov 2012
Location: St Albans UK/Agde France
Posts: 1,072
Default

Quote:
Originally Posted by MartyNL View Post
80mm would be perfect up to 6x7cm.
Apo's tend to be very expensive but try to get a 6 element lens, if you can.
On B&W it didn't seem to make much difference when I ran tests 60 years ago. In fact the sharpest lens in the test was a 3 1/4" TTH Ental, a Tessar- type 4-element objective. But it showed fringing in colour! I think colourblind paper helped it.

Edit: i just looked up the Ental and it was/is quite good but suffered from ´browning' and non-standard threads.

Last edited by JOReynolds; 19th November 2023 at 06:50 PM.
Reply With Quote
  #17  
Old 20th November 2023, 05:17 PM
Martin Aislabie's Avatar
Martin Aislabie Martin Aislabie is offline
Friend
 
Join Date: Nov 2008
Location: Stratford-upon-Avon, England
Posts: 2,069
Default

Quote:
Originally Posted by JOReynolds View Post
On B&W it didn't seem to make much difference when I ran tests 60 years ago. In fact the sharpest lens in the test was a 3 1/4" TTH Ental, a Tessar- type 4-element objective. But it showed fringing in colour! I think colourblind paper helped it.

Edit: i just looked up the Ental and it was/is quite good but suffered from ´browning' and non-standard threads.
What is "browning" ?
Reply With Quote
  #18  
Old 20th November 2023, 05:21 PM
Martin Aislabie's Avatar
Martin Aislabie Martin Aislabie is offline
Friend
 
Join Date: Nov 2008
Location: Stratford-upon-Avon, England
Posts: 2,069
Default

Quote:
Originally Posted by Terry S View Post
After Martin's suggestions for lenses, I had to read his message again. Personally I won't be buying any of the lenses at the prices that he mentions. My pockets aren't that deep.

I bought a couple of new lenses for my enlarger, which does up to 6x6 a few years ago off eBay UK. I bought two Nikon lenses, a 50mm and an 80mm lenses for under £50 each and I often use them wide open at f4 for older and denser negatives from times past and they are pin sharp across the image.

Just looking on the site, there are a good number of 80's under £50 and I would expect a 50mm lens to be cheaper still.

Happy browsing.

Terry S
A good enlarging lens is a key part of the photographic process - all your prints go through it.

I realise a better lens does not always equal a high price tag - but with all other things being equal - it often does.

Martin
Reply With Quote
  #19  
Old 20th November 2023, 09:04 PM
JOReynolds JOReynolds is offline
Friend
 
Join Date: Nov 2012
Location: St Albans UK/Agde France
Posts: 1,072
Default

Quote:
Originally Posted by Martin Aislabie View Post
What is "browning" ?
I was hoping that FADU would come to my rescue and tell me!
Reply With Quote
  #20  
Old 21st November 2023, 12:38 PM
Terry S Terry S is offline
Friend
 
Join Date: Dec 2011
Location: Southend on Sea, Essex, England, UK
Posts: 3,757
Default

Searching with google gave a good few comments, all basically saying the same:

Quote:
ENTAL II lenses are very sharp and it shows. They tend to browning due to the radioactive elements used to make the highly refractive glass used, but that can be compensated later.
If you want to read anymore links, I used the following in google, as my usual search engine, duckduckgo, couldn't recommend anything to me.

Search: "browning" enlarger lens

Terry S
Reply With Quote
Reply
Support our Sponsors, they keep FADU free:   AG Photographic   The Imaging Warehouse   Process Supplies   RH Designs   Second-hand Darkroom Supplies  

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hello from Nottingham Ifindoubtflat Introductions 12 13th April 2014 08:42 AM
Hi from Nottingham ~ David Nimrod Introductions 10 10th April 2014 03:54 PM
Hello from Nottingham glynallinson Introductions 11 14th April 2013 02:27 PM
Hello from Nottingham Peanut Introductions 9 5th March 2013 08:55 AM
Cumbria Calling RoyFleming Introductions 13 12th July 2010 09:12 PM


All times are GMT. The time now is 05:07 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.