Developing times?

[Slowshooter]

Pardon my ignorance, but do the circled numbers indicate duration of development? I don't want to risk my film without checking first!

 

[RalphLambrecht]

Pardon my ignorance, but do the circled numbers indicate duration of development? I don't want to risk my film without checking first!

Yes, yhey do.

 

[howardpan]

Yes, they do. If you expose at a slower speed, you may choose to develop for less time. It's often a technique to reduce contrast.

 

[Slowshooter]

Yes, yhey do.

Great. Thanks Ralph.

 

[Slowshooter]

Yes, they do. If you expose at a slower speed, you may choose to develop for less time. It's often a technique to reduce contrast.

Thanks Howard. I'll remember that.

 

[Harman Tech Service]

Hi Slowshooter,
Yes, the units are given inside the brackets above. We mean it to say "all times in minutes when at 20C/68F" - just abbreviated!
I hope your processing goes well.
-David

 

[runswithsizzers]

In addition to the specified temperature, the manufacturer's recommended development time assumes their recommended agitation procedure. For example, Ilford's "FILM PROCESSING CHART" <link here> says:
"For manual processing in spiral tanks and deep tanks, the development times are based on intermittent agitation. With spiral tanks, invert the tank 4 times during the first 10 seconds, then invert a further 4 times during the first 10 seconds for each further minute. Where continuous agitation is used for manual processing (as in a dish/tray or with some types of developing tank), reduce these times by up to 15%. For use in rotary processors without a pre-rinse, reduce the spiral tank development times by up to 15%. A pre-rinse is not recommended as it can lead to uneven processing."

 

[Slowshooter]

Hi Slowshooter,
Yes, the units are given inside the brackets above. We mean it to say "all times in minutes when at 20C/68F" - just abbreviated!
I hope your processing goes well.
-David

Thanks David!

 

[Slowshooter]

In addition to the specified temperature, the manufacturer's recommended development time assumes their recommended agitation procedure. For example, Ilford's "FILM PROCESSING CHART" <link here> says:
"For manual processing in spiral tanks and deep tanks, the development times are based on intermittent agitation. With spiral tanks, invert the tank 4 times during the first 10 seconds, then invert a further 4 times during the first 10 seconds for each further minute. Where continuous agitation is used for manual processing (as in a dish/tray or with some types of developing tank), reduce these times by up to 15%. For use in rotary processors without a pre-rinse, reduce the spiral tank development times by up to 15%. A pre-rinse is not recommended as it can lead to uneven processing."

Thanks runswithsizzers.