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Whole Plate Film for WPPC users!

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Whole Plate Film for WPPC users!

Post  Whole Plate on 2009-08-01, 15:33

I had a thought about this and a whole plate photographer in Europe expressed some interest in finding an affordable emulsion.

The cost of Ilford FP4+ around £59/25 sheets seems to be a deterrent for some enthusiasts.

If any whole plate film users are interested, in September 2009, some of us expressed an interest in finding an affordable emulsion.

I've come across two bulk rolls:

1. Agfa APX200S Near IR sensitised emulsion
2. Konica Lith film [High contrast ISO ~ 1-3]

We are planning to cut down the complete 15 metre rolls to whole plate dimensions (following the Ilford FP4+ sizes; not the slightly smaller Kodak sizes). Our intention is making whole plate film emulsion more accessible to practitioners of the whole plate format where the cost if Ilford FP4+ is out of reach, or where Wephota emulsions are unobtainable. This is a private venture just for whole plate enthusiasts and not intended for the wider market, based on the master rolls.

The cost of the sheet roll film makes each sheet competitive at around £0.30 per sheet, based on drafting out 200 sheets per roll. Leave a note if interested in either emulsion. I'll have to test the above emulsions with a densitometer for fogging. If anyone is interested in doing some basic densitometry tests to exclude fogging, I'll send a few cut whole plate sheets for calibration before cutting the rest of the master roll in the Autumn.


Here are the characteristics of the film:

________________________________________________________________________

AGFA APX200S

Spectral sensitivity: the curve starts below 400nm, peaks at 725nm and extends to 775nm.

Exposure index: ISO 200/24, with red flash ISO 400/27,
Push development: ISO 800/30 - ISO 6400/39.
IR Filter: 695nm; 715nm, 720nm or 750nm
Characteristics: Similar to Ilford SFX200 extended red film; originally created as the SP815T.

* Diffuse RMS-grain spec (x1000): 11.
* Resolution: 150 lpmm @ contrast 1000:1, 40 lpmm @ contrast 1.6:1.
* Sensitive layer: 11 micron
* Carrier: PET 100 micron (thin polyester, to suit the long roll film applications)

Intended application: infrared photography; portraiture; landscape; still life
________________________________________________________________________


The Konica Lith Film is a very slow film originally intended for lithographic purposes, and is a high contrast very fine grain medium requiring a soft developer. It is ideal for vintage barrel lenses and/or where ultra fine grain detailed negatives are required.

Effective ISO operates around ISO1-3 in standard daylight circa 5,000 - 5,500Kelvin, being a useful slow speed daylight film for shutterless or barrel lenses.

Perhaps it's best to see whether there is significant interest in the Agfa infrared sensitised roll first.

Kind regards,

RJ
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Re: Whole Plate Film for WPPC users!

Post  Gary L. Quay on 2009-08-02, 03:34

Depending on cost, I am interested in the Agfa film. My whole plate camera is entirely a studio camera, but with some tungsten lighting and IR film I can make a model shine. She may sweat a little, though.

Gary L. Quay

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Re: Whole Plate Film for WPPC users!

Post  Whole Plate on 2009-08-02, 11:53

Hi Gary,

Welcome to the forum! The sturdiness of the whole plate studio cameras are fantastic. Most what I use are all field cameras, none of which are over 3kg and so need a decent platform.

That's quite a skill working with tungsten lighting and IR film for modelling. I guess that's when the green lipstick comes in handy :)

The sheet roll cost £60: I calculate it can generate around 200 sheets so the cost will be minimal. When I return to England in Autumn, I'll start the tests on the film then.

Kind regards,
RJ
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Re: Whole Plate Film for WPPC users!

Post  colrehogan on 2009-08-02, 14:30

I like the option to try IR film in whole plate. I have it in 4x5, 8x10, and 11x14 (this was meant to be cut down to 5x12, but it hasn't happened yet. Sad
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Re: Whole Plate Film for WPPC users!

Post  Whole Plate on 2009-08-02, 16:19

Hi Diane,

As far as I know, the Agfa APX200S is more like the Ilford SFX response in the near-IR spectrum and not quite as halated as the aerial HIE types available in the States.

Let me know how many sheets you'd like to try.

Kind regards,

RJ
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