SIGMA 50-500mm f/4-6.3

[glsammy]

Originally Posted by matt_xyz

that is a lovely sharp shot Graham.

Matt

Yes Matt, it is, but here's one taken with the Bigma, at exactly the same time.



That's not too shabby either!

I'm beginning to doubt myself here! In ideal conditions, either can provide superb shots..
My initial comments were made after I reviewed some shots I'd taken quite recently, but perhaps I wasn't too fair, as the shooting conditions weren't ideal.

[Wild-Woman]

Originally Posted by GerryNick2

A prime lense is one that has a fixed focal length i.e.400mm as opposed to a zoom lense which has a variable focal length for example 100-400mm.
With a prime lense to a certain extent you need to reposition yourself closer if you want to fill the frame whereby with a zoom lense as the name suggests you can zoom in to fill the frame or compose the shot.
Hope this helps
Gerry

Ah. Thank you. Cor, the old photography knowledge bank of mine is filling up. Trouble is it pushes something else out!..... Who am I?

[matt_xyz]

I think you're right Graham. The Bigma is certainly capable of high quality images - I can recall many of yours and digi's when he used the bigma. Perhaps the prime is slightly less demanding in the sense it might be easier to produce high quality images handheld. I don't imagine there is a huge difference in quality though. They're similarly priced lenses after all.

Matt