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I need some help with a film I shot at the wrong ISO. The film in question is Ilford HP5 and the ISO is 400. Trouble was that I had already shot off a colour reel at 200 and I thought I changed it (sorry I didn't mention that I am using a Nikon FM2) but half way through the shoot I noticed it was still on 200.

Normally, I would say c'est la vie and put it down to experience but I know that there are some decent pics on this reel and I know I can rescue the film.
I will be using Ilfotec LC29 developer but I am not sure how I can pull the film back. Any offers of help would be much appreciated and hopefully will lead me to post some pics that I have developed. By the way I am new to this game and I have just started my last course in a City and Guilds program and I really want to do really well. I love this site and all the ideas and help other users give each other. :smile:
 

Bob F.

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No problem. Just develop as usual - one stop extra exposure is gong to have little effect in B&W - should give you slightly better shadow detail if anything. Many people will rate HP5+ at ISO 200 all the time (I rate it at 320 FWIW).

As always with these things, YMMV, but I would just ignore the extra exposure and concentrate on suiting the development time to the contrast of the important scenes (erring on the short side).

Cheers, Bob.
 

johnnywalker

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Ilford recommends using perceptol stock solution for a pull to 250. 13 minutes at 68 degrees.
 

Ole

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If you pull it, you'l get lower contrast. I would just develop as normal unless there were scenes with extreme contrast. In that case I would probably expose it at 200 anyway, and use a compensating developer.
 

Andy K

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I always shoot HP5+ at 200ASA and develop as normal with no problems. I develop in Rodinal at 68 degrees with a dilution of 1+50 for 15 minutes agitating for the first minute and then agitating for 5 seconds every 30 seconds.Look in my gallery to see the results. (Snooowmaaan, The Leap, The Treasure Hunter, Pattern 4)
 
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stinkjet

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Don't sweat it...unless you've ever done a threshold exposure test with your camera and HP5...you may be a lot closer to the actual EI than you think...Do what everyone else suggests and dev it normally and pass those City & Guilds...whatever they are?!

stink
 

Andy K

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A link to the City and Guilds site

Dead Link Removed

City and Guilds qualifications are highly recognised in the UK and have been for decades.
 

Blighty

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I've always used HP5 at 200asa and get good results with D76. Most of the B&W films I've used benefit from a little overexposure and 1 stop over is very little really. I would develop as normal. Regards, BLIGHTY
 
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