Hi...since it has been donkey years since i last went to develop photos (I used a film cam at that time), may i ask what's the max iso i can go in order not to have grainy 4R photos and A4 sized prints?
I normally fixed my ISO to 100 and play ard with aperture and shutter spd instead to get the correct exposure. But i will be shooting indoor portraits with only a tamron 17-50mm f2.8, 50mm f1.8 and an external flash and unfortunately i do not have the luxury of having light stands and those other external light sources.
When i test shot it with auto iso selection, it selected iso800 and that's already with the lights on. So i forsee i need minimum iso800 or more?
If that's the case if i ever want to print A4 prints or 4R prints, will the photos turn out noisy? Anyone who has knowledge about this?