Amiringello

Thank you so much that is very helpful to me.

Now I just have to save

I am new to Digital SLR Photography, being I have always been an SLR film format Photographer.

I am a little lost as to how the lens system works.
I currently own a 135mm telephoto lens Non Digital If I wanted to purchase its equivalent in digital fomat what would this be and how do you convert

Many thanks

Nicholas