Hi everyone, recently I received a phone call from a gallery asking for photographing a famous painting. I went there with my assistant and all equipment then couple of days later delivered the photos. Now I'll send them an invoice but I'm not so sure how much I should charge. Job covers half an hour photo shooting on film (medium format) and digital, two 16X12 inch print , two 8x6 print. Thanks for your help. Celal.