Both are normal lenses. You are looking at 150mm and 180mm equivalents on 4x5 or 45mm and 55mm equivalents on a 35mm camera or full frame DSLR. The 210 you are using would be like the 420 that E. suggests.
Yousuf Karsh used a 14" (360mm) and I read somewhere that Richard Avedon used a 360mm Schneider on his American West portraits. You can check them out if you want examples.
I own a 14" Commercial Ektar but I have also tried a 300mm lens. There isn't a lot of difference in focal length.
Yeah, Karsh mainly used a 14" Kodak Commercial Ektar (I accidently left that out of my post). I'm a big fan of Karsh so of course I wanted one. :)
Just to let you know: I went to the shop and comparred both lenses. The shape of the 360mm and the gut feeling made the decision for me... the 300mm was kinda worn heavily...
Really looking forward to go out shooting with it now! :)
It was one of those decisions where you can't go wrong either way. Enjoy your new lens. Enjoy 8x10.
John is right that you couldn't go wrong with either focal length. Have fun shooting your new lens!
Some people put all kinds of things in a microwave to see what will happen, and some people shoot things just to see how they blow apart. I like whacking all these lizards that crawl on the side of my house with a stick. And I go after the carpenter bees with a badminton racket. Although there are more of them than there are of me, and they bore holes in my house faster than I can knock them out of the air.