Response to Increasing contrast with tri-x and t-max

"I should add 1 minute, 20 seconds to the developing time." That would depend on your temperature of development. Adding 1 minute 20 seconds to a processing temp time at 78 degrees will yield allot different results then adding 1 munute 20 seconds of time to a 68 degree temperature time. Just take your proper development time based on temperature time of choice and multiply it by a push PERCENTAGE (%) of choice. The same applies for a pulling. EXAMPLE: (development time)15 minutes * 10% = 1.5 (additional push time)This puts your total development time at 16.5 minutes. You can of course increase or decrease the percentage time based on the results you desire.

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