2 different way of agitating Paterson tank. Unfortunately there is no date of publishing on the instructional booklets.
2nd one is very, very interesting! Never seen it even I'm using Paterson tanks since 1977.
I never use the twizzle stick. The lid is on and I twist and turn slowly in a figure of 8.
Interesting. Than you.2 different way of agitating Paterson tank. Unfortunately there is no date of publishing on the instructional booklets.
2nd one is very, very interesting! Never seen it even I'm using Paterson tanks since 1977.
Quite a common and respected agitation movement as far as I can see from comments on Photrio and other videos so I doubt if your agitation has anything to do with your problem and in fact if your issue only appears on half the frames I feel we can definitely rule out agitation
How feel the rest of you?
I take it that the lighter sky on the right as we look at it, is not simply the fact that that section of the sky was in fact lighter as might be the case if the sun is setting in that area of the sky?
If this shot had been in the gallery I am not sure I'd have thought it strange that the right part of the sky was lighter. I'd have assumed what I said above
pentaxuser
You do know that the instructions for Paterson reels and tanks recommend against using the twist agitator for anything more than the first 30 seconds of agitation?
I always like to mention that, because almost no one has ever actually read that.
It is hard to see on your example, but randomizing your agitation is never a bad idea when dealing with uneven results.
It was almost dark. The sun had set a good 20 minutes previously. Pale strips both on the left and right of the neg.Yes he did say in his #5, momus, that he never uses the twizzle stick so we can rule that out as a cause. His answer on the sky being lighter or not will be helpful
pentaxuser
Thanks in advance for your advice here. Photo attached taken on a Hasselblad where you can see the pale edges and lines running vertically. Agitation is twist and turn for the first 30 secs then 10 secs every minute. I use more developer than required so it is well convered.
You do know that the instructions for Paterson reels and tanks recommend against using the twist agitator for anything more than the first 30 seconds of agitation?
I always like to mention that, because almost no one has ever actually read that.
Thank you, will try this.The vertical lines .2 bromide drag and I think it would be better off with continuous agitation.Try to lay your tank onto a flat surface such as such as the edge of a table and roll the tank back and forth for the entire development time. This will give you a very even development.
Did you, per chance, have a polarizing filter on the camera?
We seem to have become fixated on agitation as being the cause and a change to that as being the solution but I have never seen Canis' problems on my negs in 18 years of development and my regime is close enough to his to have brought about something similar in those 18 years
So is it time we examined other causes? What those might be remains a "head scratcher " for me I admit This one gives me the same depressing feeling in terms of finding a cause as did vania's and logan2z
So a few more questions:Canis, have you experienced this problem with this Hasselblad before?
If not what if anything was different on this occasion in terms of film, developer etc?
pentaxuser
@Robert Canis How rapidly did you dry your negs - and did you squeegee off the water?
The last time I had problems like this, it was a shutter issue with a Leica IIIc. The problem only manifested itself at high shutter speeds.
I have also seen an appearance like this with dense negatives on an older scanner.
The streaks appear too linear and regular for an agitation issue.
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