Help: opaque milky streaks on edge of 35mm B+W
Old 10-25-2019   #1
kevin_v
Registered User
 
kevin_v's Avatar
 
kevin_v is offline
Join Date: Dec 2011
Location: San Francisco Bay Area
Posts: 78
Question Help: opaque milky streaks on edge of 35mm B+W

Hi folks,

I developed a roll of HP5+ this evening and found something unfamiliar when I pulled the film from the reel.



As you can see in the image, there's some opaque milky streaks on both edges of sections of the film. The images themselves seem fine, but when I ran my fingers along the edge, my fingers picked up some black residue - my guess is that it's the edge markings printed on the film.

I've never encountered this before. My intuition says underfixing, but even if I'm right, I'm not sure how to avoid it in the future because it seems more about distribution than time.

Anyone recognize this sort of thing? Recommendations for avoidance or film care after-the-fact? (It's currently drying)

Potentially relevant details: ~600ml Patterson tank and reels, film was in the bottom reel, with an empty reel on top; 7.5 min ~300ml HC-110 Dil B @ 20C; water for stop; 1+4 Rapid Fixer 5 min; rinse + photoflo
__________________
Kevin Viratyosin
@viratyosin on Instagram
  Reply With Quote

Old 10-25-2019   #2
Bill Clark
Registered User
 
Bill Clark's Avatar
 
Bill Clark is online now
Join Date: Dec 2004
Location: Minnetonka, Minnesota
Age: 71
Posts: 2,588
Looks like you need to use a little more fixer.

Or the film is touching the edge of the reel. Cause?
__________________
Predictions are hard, especially about the future.
-Yogi Berra
  Reply With Quote

Old 10-25-2019   #3
CharlesDAMorgan
Registered User
 
CharlesDAMorgan is offline
Join Date: Apr 2018
Location: Plymouth, UK
Posts: 1,373
Bit more fixing required as Bill says, the area of the film in the grooves of the developing reel is the last to complete. I get it on occasion, especially if I've had a loading disaster and ended up with emulsion side outwards.
__________________
De-gassing progress:

Leica M2, Nikon D700, Bronica RF645, Leica CL, Summicron 40mm, Rolleicord Va, Hasselblad 500 CM Zeiss Planar, Leica 50mm Summicron V3, Hasselblad PME51 metered prism, Zeiss Ikon Super Ikonta 534/16 & Ensign 820 Special - all gone.
  Reply With Quote

Old 10-25-2019   #4
kevin_v
Registered User
 
kevin_v's Avatar
 
kevin_v is offline
Join Date: Dec 2011
Location: San Francisco Bay Area
Posts: 78
Thanks for the rapid responses!

Quote:
I get it on occasion, especially if I've had a loading disaster and ended up with emulsion side outwards.
This might be it. I loaded it emulsion-side out this time because I had just taken it out of the camera and I find getting the film onto the reel easier when I'm not fighting the curl. I hadn't considered this would affect which side of the film is pressed against the reel guides. Thanks!
__________________
Kevin Viratyosin
@viratyosin on Instagram
  Reply With Quote

undeveloped streak
Old 10-26-2019   #5
randy stewart
Registered User
 
randy stewart is offline
Join Date: Sep 2018
Posts: 120
undeveloped streak

No doubt about it! What you have are strips of emulsion along the edge of the film which did not develop or fix because they were pressed against the flange of the reel. That is what you get using a plastic reel with straight, fairly deep flanges or grooves and load the film with the emulsion facing out against the curl. I'm unclear as to why you would load the film inside out, since the film would naturally have more resistance to sliding along the reel grooves as you would load a Patterson reel. If this is to combat the film sticking excessively when loaded normally, then you have some pretty dirty reels there, which is not unknown to Patterson users. Maybe up your game to stainless steel.
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 08:08.


vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

All content on this site is Copyright Protected and owned by its respective owner. You may link to content on this site but you may not reproduce any of it in whole or part without written consent from its owner.