No legal issues in saying, "in my experience, latent images on Pan F haven't kept nearly as well when development was not prompt as they do on other films" which is pretty much all anyone has said. And I seem to recall something on the box about developing promptly, maybe more firmly worded than the usual such disclaimer - I'd have to dig a roll out of the film fridge to look and that's downstairs.
Originally Posted by pentaxuser
This is true in my experience too, to which I have a one word answer - Diafine. Stone simple and works great with Pan F. Tames the highlight contrast and gives a touch more effective speed too. Box says to shoot it at 80. I use EI 64.
Originally Posted by Worker 11811
I would first consider the lab might be the problem. It all depends on who was working that day. I have a favorite restaurant and the food was always excellent until I changed the day of the week I went. Different day, different chef.
A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.
~Antoine de Saint-Exupery
Pan F problems?
I've been using and loving pan-f and pan-f+ for 30 years (good god). Obviously I like it. But I never send it off to a lab, and it wouldn't be my first choice if I had to do so.
The latent image issue is real but not drastic. I can't seem to find it now but I believe Ilford has advised about it, I think Simon has confirmed it as well.
Ah-ha, that would explain why most of my Pan-F has very faint numbers. Still a great film and no problems with consistency, which is true of all Ilford films btw.
Seeing as you are in the UK, try sending to Ilford's processing lab.
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+1. PanF Plus (PanF) has been in my arsenal for something in the order of thirty years. No issues at all; an exceptional and absolutely beautiful film (my choice for landscape/architecture/fine art shooting). My guess is that the issue is with your lab; why not process it yourself? Results will likely be more consistent...
Originally Posted by Klainmeister
Helpful comments, thanks all. I think I've had some latency issues so I'll have another go and send them fresh. Doing it myself isn't the easiest option at the moment, though perhaps in the future. Hopefully I can find a way to make it work as I really miss Pan F - nothing quite like it on a good day.
It could have been improperly spooled onto a reel, if those were involved. It's a tad more sensitive
in this regard to even film distribution than some other films, though if the film had actually buckled
and touched it would show as vertical streaks of whatever mush. Sometimes a pinch of EDTA helps.
But given basic technique, it's relatively cooperative, and nothing particularly weird about the
processing variables. Obtaining correct contrast is a different subject.
So have we a consensus that about 3 months is the max time for exposed but undeveloped Pan F before some deterioration in latent image is experienced or have we others here who have left their Pan F for longer without deterioration?
If Pan F is unique in exhibiting this phenomenon in the Ilford range, I wonder what makes it this way. I have twice been on the Ilford tour and there was nothing I recall being said about its emulsion or production that even hinted at this problem.
Of course some might say that Ilford wouldn't reveal this any way and that's why nothing was said and indeed according to one poster Ilford has hinted that such a problem exists or has even stated it( Simon Galley being mentioned)
Dear MK II et al,
Where do we start?
Latent image stability, a real issue on papers and films, both colour and monochrome some are better than others but by and large they are all amazingly stable especially when you consider the LI performance of 50 years ago. If we talk about PAN F + when the ( all new ) plus emulsions were introduced, one major improvement was latent image stability. I should know, but I don't where PAN F + comes in LI performance compared to our other film emulsions but I will speak to our technical service, they will advise me and I will let you know in the next day or so.
Dear Pentax user....deeply appreciate the 'allegedly' in the sort of 'Have I got news for you' context, you do not have to worry, ever, I believe in people saying what they think about us and our products, I will always robustly defend, or on occasion agree to differ, but a healthy and positive honest debate is always to be encouraged...
Simon ILFORD Photo / HARMAN technology Limited :