Quote Originally Posted by Max Power
Hello Donald,
I have a question. I went outside and took the EVs for shade and fully lit and added the difference to five. Now my stupid question: what do I do with this number? What is an SBR?

Thank you,
Kent
This adjusted number would be your SBR. That is the "subject brightness ratio" for your conditions. If the SBR is 7 it is normal. If it is greater then 7 then you would adjust development to reduce inherent scene contrast. If it is less then 7 then you would increase development to increase inherent scene brightness. If you use Pyrocat and any of the films that Sandy King has tested, you will be able to arrive at development times for different SBRs. A good source of this information is on unblinkingeye.com