Digital BW, The Print

The RMS grain numbers the manufactures published for their B&W films usually
coincided with my experience with the films.  I switched from Agfapan 25 to
Tmax 100 because with the T-Grains the 100 ISO film was almost as fine
grained as the 25 speed film (and it had much better reciprocity
characteristics).

These are some RMS grain numbers the manufactures published:

Traditional film grain:

Agfapan 25 - RMS 7

Agfapan 100 - RMS 9

Agfapan 400 - 14

T-Grain films:

T-Max 100 - RMS 8

T-Max 400 - 10

So, in general, I think the T-grains did give more speed for a given grain
level.

Then again there is the traditional grain film that is different:

Technical Pan at 25 ISO with Liquid Technidol developer - RMS 5.

(I use Tech Pan whenever I can.)

Paul
www.PaulRoark.com 


> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Richard
> Smallfield
> Sent: Saturday, October 15, 2005 7:23 PM
> To: Digital BW Print
> Subject: [Digital BW] Pan F vs Delta 100
> 
> Hello,
> I was at an exhibition yesterday and got into a discussion with a
> photographer who'd used Pan F for a photo and I asked how she found Pan F
> and Delta 100 compared.
> 
> She said Pan F had finer grain because it was a lower ASA. I said that
> they were different technologies and Delta had tabular grain. Her reply
> was lower ASA = smaller grain. End of story.
> 
> So ... I had a look at some 10x15 prints of mine and from the few prints
> I've done, it looks like she might be right. It also depends on how
> aggressive I was with the curves on those images of course, as that
> accentuates grain, too ...
> 
> Any thoughts?
> 
> thanks,
> Richard
> --
> http://smallfield.vze.com
> http://photos.smallfield.vze.com
> 
> 
>    "Programming is an endless race between the software engineer,
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>    which strives to produce even bigger idiots."
>    --anon
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