Ilford HP4 exp. 1979

Logan Becker · May 23, 2017

Logan Becker submitted a new resource:

(there was a url link here which no longer exists) - Is HP5 the same as HP4 or did they change things?

Just bought two 17 meter spools of 135 Ilford HP4 that expired in 1979 on ebay. Interested to know the difference (if any) between this and HP5. (Pic attached) View attachment 179808

(there was a url link here which no longer exists)

MattKing · May 23, 2017

They did change things a bit.
And of course, this film is about 30 years old, so it will certainly be different than new HP5.
One query though - why are you posting this in the "Resources" section, which is designed for long term reference material - rather than the normal Black and White materials sub-forum?

Logan Becker · May 23, 2017

MattKing said:
why are you posting this in the "Resources" section, which is designed for long term reference material - rather than the normal Black and White materials sub-forum?

I'm glad you asked, because I'm not entirely sure where that is.

Andrew O'Neill · May 23, 2017

I certainly wouldn't pay that much for expired film...

MattKing · May 23, 2017

Logan Becker said:
I'm glad you asked, because I'm not entirely sure where that is.

You can get there from here
If you click on Forums at the top of the page, it gets you to this indexed listing: (there was a url link here which no longer exists)
Scroll through this, and you will see a wealth of organized material, including the material under the Darkroom heading for the "B&W: Film, Paper and Chemistry" sub-forum: (there was a url link here which no longer exists)

Logan Becker · May 23, 2017

MattKing said:
You can get there from here
If you click on Forums at the top of the page, it gets you to this indexed listing: (there was a url link here which no longer exists)
Scroll through this, and you will see a wealth of organized material, including the material under the Darkroom heading for the "B&W: Film, Paper and Chemistry" sub-forum: (there was a url link here which no longer exists)

Thanks!

pentaxuser · May 23, 2017

Logan, you seem to have posted the same thread twice and have 10 replies on one and 5 replies on the other which means looking at two threads for the full picture. Maybe the mods can help and merge the two threads.

Let us see what your results are when you develop the HP4.

pentaxuser

jtk · Dec 26, 2017

HP 4 was more like TriX than HP5 is today...was/is.

pentaxuser · Dec 27, 2017

Logan, what success did you have with the expired HP4 that you bought seven months ago?

Thanks

pentaxuser

G1DRP · Dec 28, 2017

I have some HP4, which also expired in 1979, in 120. I shot it at 50ASA and developed it in Rodinal for 6 minutes, with reasonable results. I wouldn't use it for serious photography though because the grain had clumped in some areas.

G1DRP · Dec 28, 2017

Found a photo taken on 1979 expired HP4 on my Yashica Mat.

G1DRP said:
I have some HP4, which also expired in 1979, in 120. I shot it at 50ASA and developed it in Rodinal for 6 minutes, with reasonable results. I wouldn't use it for serious photography though because the grain had clumped in some areas.

ic-racer · Dec 28, 2017

I'm curious what you all get from the film. I stopped checking the base fog and stopped using the HP5 72 exposure 35mm film I got in the early 1980s. Now I'm just saving it in the canisters for its unique historic appeal. Film base got up in the 0.6 range.

(internet photo; I don't have the boxes, just the canisters)

pentaxuser · Dec 29, 2017

G1DRP said:
I. I wouldn't use it for serious photography though because the grain had clumped in some areas.

Well the cat looks pretty serious to me. I can't see the grain clumping and certainly not in the important area which is the cat. With expired HP4 it is said that the cat in question will stay young forever and only his/her picture will get old. Not a bad exchange in anybody's book

pentaxuser

Ilford HP4 exp. 1979

Logan Becker

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Logan Becker

Andrew O'Neill

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MattKing

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Logan Becker

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jtk

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G1DRP

G1DRP

ic-racer

pentaxuser

Ilford HP4 exp. 1979

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