Development blotches

OAPOli

Member

Joined

Sep 26, 2022

Messages

686

Location

Toronto

Format

Medium Format

• Dec 19, 2022

• #1

Sometimes I get development blotches on one side of the negative. I *think* they are on the top side of the tank. Are these due to insufficient chemistry?

DSC05995-1 by Olivier, on Flickr

 

Craig

Subscriber

Joined

Apr 8, 2004

Messages

2,355

Location

Calgary

Format

Multi Format

• Dec 19, 2022

• #2

Could be insufficient chemistry, or more likely air bubbles trapped at the top of the reel. Do you tap the tank on your work surface after filling with developer to dislodge the bubbles?

 

OP

OP

OAPOli

Member

Joined

Sep 26, 2022

Messages

686

Location

Toronto

Format

Medium Format

• Dec 19, 2022

• #3

Thanks. I usually start inverting right after pouring. I give the tank two taps after each inversion cycle.

 

Last edited: Dec 19, 2022

MattKing

Moderator

Moderator

Joined

Apr 24, 2005

Messages

53,255

Location

Delta, BC Canada

Format

Medium Format

• Dec 20, 2022

• #4

Scrub your reels, in case there is any residue on them.
And try a bit more developer - just don't put too much in. There should be air space room for slosh and gurgle.

 

koraks

Moderator

Moderator

Joined

Nov 29, 2018

Messages

23,443

Location

Europe

Format

Multi Format

• Dec 20, 2022

• #5

OAPOli said:

Are these due to insufficient chemistry?

Click to expand...

Usually, yes. Cleaning reels is a good idea, but I'd certainly suggest also increasing the fluid volume by 10% or so.