Photos have to be of very good quality and you need to write some description about the pics so that it is a value add to the reader. you wont get any credit for just uploading the pics. Usually it takes 24-48 hours to get the credit updated. It takes longer if you post just before the weekend.
You can get around 55 credit for a decent photo blog
Hey RD,
It actually depends on the quality of the photo you post on ...
I have got 36, 50 and 55 as Credits for my photo blogs ... and number were from 5 to 9 and 11 also ...
It's all upto their discretion and we can't knwo the exact number ....
Hope the query is answered !