[rollei_list] Re: Rollei R3 film review
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Mon, 9 May 2005 15:59:08 -0700
----- Original Message -----
From: "Carlos Manuel Freaza" <cmfreaza@xxxxxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Monday, May 09, 2005 3:42 PM
Subject: [rollei_list] Re: Rollei R3 film review
> Aaron:
> I have found an interesting thread about the
> Rollei film, i.e. the following opinion:
>
>
> "jukka vatanen , may 03, 2005; 04:49 p.m.
> Hi Jukka here again: I wrote a response to another
> thread on the Rollei R3 film elsewhere in this forum.
> My summary here is: I shot Rollei R3 and Fuji Acros
> 100 and neopan 400 in two leica bodies, same lens :
> 35mm Summicron and same subject matter. The developer
> was the Rollei Low speed for 64-100 asa developed and
> diluted as per Rollei instructions. also r3 and neopan
> 400 shot at 800-1600 asa developed in Rollei High
> Speed developer with Rollei instructions for dilution
> and developement times. My impression is that the
> Rollei R3 film and developer cmbo is a fantastic
> advancement in film technology for a BW reportage
> photographer. It offers unique latitude in exposure,
> that is not possible with traditional films. rather
> than bracket exposures, now you can bracket
> development. Find new kind of images by selecting
> "layers of silver" in latent images. Technically the
> low speed 64-100 asa graininess is more apparent than
> in Acros 100, but then the acros is the finest grain
> film I have ever used. At high end (1600 asa) the
> density, contrast and gaininess is perfectly
> acceptable, directly comparable to Neopan 400. Quite a
> latitude for a single film ! BUT: you have to use the
> high tech Rollei developers. From other comment on the
> forum, no idea to use the old traditional developers
> such as D-76 or Diafine"
>
> The entire thread is here:
> http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00Bivj
>
> All the best
> Carlos
I wrote and posted my remarks just before receiving this,
it gives me an idea. It is possible that the Rollei
developer is selecting one or two of the three film layers
by controlling penetration into the emulsion. This is the
technique used by Kodak for processing Kodachrome in its
first two years. It also could explain the remark that
pre-soaking the film will substantially increase its speed.
I can see several objections to this being the correct
explanation but its a possibility.
In the original Kodachrome process the film was first
developed to a negative in all three layers. The reversal
developed using a controlled bleach step so that the
appropriate dye was produced in each layer. After about two
years the process was changed to the currently used
differential color exposure method, which is a lot less
fussy.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
---
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