Hey whats up people. i'm new to photography and need some help. i have an old pentax asahi and i need help with my aperture. i don't know how to set it according to the amount of outside light. i also have a flash and need to know how to the aperture properly when i use my flash. can somebody please help me!!!! my e-mail is firstname.lastname@example.org thanks for any help you can give me!!!!!!!!