I am new to photography and i found a minolta x-700 with 45mm f/2 MD rokkor lens in mint condition and good price. I could reach a lot of information about minolta X-700 body but i couldn't find any information about its lens. The only information that i know Rokkor 45 f/2 MD lens is a pancake lens.What can you tell me about these lens,its advantages and disadvantages ? Where can i use it properly ? What is the difference between 50mm and 45mm lens? Thanks for any information.