AgfaOrtho 25 And Rodinal

Film Photography & Darkroom discussion

Moderator: Keith Tapscott.

Chuck38
Posts: 2
Joined: Tue May 27, 2014 1:12 pm
Location: GA USA

AgfaOrtho 25 And Rodinal

Postby Chuck38 » Tue May 27, 2014 1:25 pm

I have several old original Agfaortho 35mm cassetes and a 30 year old bottle of Rodinal.

I have been getting back into B&W photography, and am looking for develpement times for Agfaortho and Rodinal. I KNOW THE RODINAL IS GOOD, as I have developed several 35mm rolls of T-Max.

Since the instructions with Agfaortho recomment 1:10, I have assumed that is to get good reproduction of black type on white paper. I want to get normal and high contrast negatives of landscapes, city scapes and portrature.

All help will be appreciated.

Chuck38


Ornello
Posts: 833
Joined: Thu Jan 19, 2006 9:49 am

Re: AgfaOrtho 25 And Rodinal

Postby Ornello » Wed May 28, 2014 10:15 am

You can't. It's a high-contrast film, litho-type. Use something else.

Why do people constantly ask how to use materials in a manner for which they were not designed and intended?

There are plenty of slow fine-grain films on the market. Fuji Acros is probably the best overall.

Chuck38
Posts: 2
Joined: Tue May 27, 2014 1:12 pm
Location: GA USA

Re: AgfaOrtho 25 And Rodinal

Postby Chuck38 » Wed May 28, 2014 1:39 pm

I have seen some B&W prints on the internet that were supposedly shot on Agfaortho and they have good clear gradation. I've tried to contact the photographers, but no replies.

Thanks for your reply.

Ornello
Posts: 833
Joined: Thu Jan 19, 2006 9:49 am

Re: AgfaOrtho 25 And Rodinal

Postby Ornello » Wed May 28, 2014 3:19 pm

Chuck38 wrote:I have seen some B&W prints on the internet that were supposedly shot on Agfaortho and they have good clear gradation. I've tried to contact the photographers, but no replies.

Thanks for your reply.
Microfilms are extremely slow fine-grain films for document copying. They have very little latitude in exposure and development because all the grains are very similar in size. Trust me, your best bet is Fuji Acros, probably in D-76 1:1 or 1:3 (run tests for development time). Use EI 64 or so. It's not worth the effort to work with the document films at all. I played with them many years ago. Most people do not understand how film works and why such films are not very well suited for pictorial use. Good tonality comes from having a range of grain sizes, which is why the faster films often produce the best tonality. Believe it or not, the manufacturers do know what they are doing!

Ornello
Posts: 833
Joined: Thu Jan 19, 2006 9:49 am

Re: AgfaOrtho 25 And Rodinal

Postby Ornello » Tue Jun 03, 2014 11:14 am

I want to use missile tracking film with litho developer and rat urine. Anybody have any suggestions on exposure and development?

Keith Tapscott.
Posts: 506
Joined: Tue Jan 17, 2006 8:58 am
Location: Plymouth, England.

Re: AgfaOrtho 25 And Rodinal

Postby Keith Tapscott. » Thu Jun 05, 2014 6:32 am

Use Rodental diluted 1+100000 and stand develop it for two weeks at gas mark 4.


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