Skip to Content
The Practical Zone System, 4th Edition
book

The Practical Zone System, 4th Edition

by Chris Johnson
September 2006
Intermediate to advanced
256 pages
7h 41m
English
Focal Press
Content preview from The Practical Zone System, 4th Edition

 

 

APPENDIX KCompensating Developers

 

These are very dilute, slow-working developers that take advantage of the fact that denser areas of the negative (the highlights) exhaust developer at a faster rate than thinner areas. This is because the highlight areas contain more exposed silver.

As the film develops, residual by-products (bromide ions) produced in the emulsion weaken the effect of the developer and slow the process. The function of agitation is to replace the weakened developer with fresh supplies. When the film is at rest between agitations in a compensating developer, the bromide ions build up at a much faster rate in the highlight densities of the emulsion than they do in the less dense shadow areas. This effect is exaggerated ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

The Digital Zone System

The Digital Zone System

Robert Fisher
Capturing Light

Capturing Light

Michael Freeman

Publisher Resources

ISBN: 9780240807560