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12,800 ISO Ilford HP5
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Jan 6, 2019 07:03:50   #
Crombie
 
I'm not an alchemist, but after years of experimenting I've hit on something I consider rather special. If I was to tell you I have honest to god 35 negs shot at ISO 12,800 with sharp grain no more prominent if shot at ISO 400 and with full tonal scale. I'll wager most would consider me mostly blind and or delusional or my exposure meter has gone South. I'm a zone system advocate and have a selection of meters and I've been not been sloppy. I'd like to open a conversation before I posting images.

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Jan 6, 2019 07:33:30   #
ELNikkor
 
Brilliant! Please share!

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Jan 6, 2019 07:33:33   #
VTMatwood Loc: Displaced Vermonta in Central New Hampsha
 
I am interested in where this goes.

Question: HP5 is an ASA 400 film if I recall. You pushed this to 12,800 equivalent in developing?

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Jan 6, 2019 07:37:09   #
Crombie
 
Yes, it's the developer... a 5 stop push.

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Jan 6, 2019 07:40:38   #
Tomfl101 Loc: Mount Airy, MD
 
My BS meter is is pegging right but what have you got?

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Jan 6, 2019 07:42:37   #
Nalu Loc: Southern Arizona
 
Not shooting film any longer but wil be very curious to hear your technique and see some examples.

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Jan 6, 2019 07:51:26   #
Bill Gordon
 
You can count on my interest as well.

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Jan 6, 2019 07:56:39   #
foathog Loc: Greensboro, NC
 
I used to use that film when I USED to develop B&W. I liked it.

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Jan 6, 2019 08:27:59   #
Kmgw9v Loc: Miami, Florida
 
Crombie wrote:
I'm not an alchemist, but after years of experimenting I've hit on something I consider rather special. If I was to tell you I have honest to god 35 negs shot at ISO 12,800 with sharp grain no more prominent if shot at ISO 400 and with full tonal scale. I'll wager most would consider me mostly blind and or delusional or my exposure meter has gone South. I'm a zone system advocate and have a selection of meters and I've been not been sloppy. I'd like to open a conversation before I posting images.
I'm not an alchemist, but after years of experimen... (show quote)


Have a nice day.

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Jan 6, 2019 09:24:47   #
Crombie
 
Howdy,

Meters; Lunasix F, Sekonic L-398, Pentax Spot, all of them fortunately give me the same readings and I might add the meter in my Oly EM5 MK2 is not at odds with any of them.

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Jan 6, 2019 13:06:18   #
TriX Loc: Raleigh, NC
 
Please post the image AND the developing details (developer, temp, time and agitation frequency).

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Jan 6, 2019 15:08:33   #
RWR Loc: La Mesa, CA
 
Crombie wrote:
I'm not an alchemist, but after years of experimenting I've hit on something I consider rather special. If I was to tell you I have honest to god 35 negs shot at ISO 12,800 with sharp grain no more prominent if shot at ISO 400 and with full tonal scale. I'll wager most would consider me mostly blind and or delusional or my exposure meter has gone South. I'm a zone system advocate and have a selection of meters and I've been not been sloppy. I'd like to open a conversation before I posting images.
I'm not an alchemist, but after years of experimen... (show quote)

Hopefully you'll have the good sense not to post pictures in the Main Photography Section.

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Jan 6, 2019 15:21:26   #
User ID
 
`

If the DR of the scene is amenable,
such a push is almost reasonable.


.

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Jan 6, 2019 18:33:44   #
Crombie
 
Hi,

35mm HP5 exposed at ISO 12,800. The scale and density of the negs suggest another .5 stop is reasonable.


There's some interest to package this developer for online sale and so I can tell you the processing time is 1.5 hrs at 70F. Most important is some of the chemistry during mixing must be handled with great caution!!!



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Jan 6, 2019 18:47:52   #
VTMatwood Loc: Displaced Vermonta in Central New Hampsha
 
1.5 hours of developing time... what is the agitation schedule for that duration? My arm would get tired!

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