Hi, I have recently upgraded from my kit lens and bought the Sigma 17-50mm F2.8 EX DC OS HSM, I have the Canon 450d.
I describe my photographic knowledge as minimum and tend to shoot images more on the feel of the moment than technical awareness, clearly an area I am hoping to improve...anyway what rudimentary knowledge I have gained relates to aperture size and how that's best applied to depth-of-field. I take a lot of nature-type shots, so landscapes need to be as sharp as possible, this has me using larger apertures..but here's the thing...am I right in thinking that my new lens capacity to allow lots of light restricts its prime use to low light situations?
However if that's so would not low f numbers, under those conditions, be unsuitable for landscape photography?
That being so I'm now wondering what situations exactly this f2.8 lens is best applied to?
Meanwhile in playing around on my local beach late afternoon, here's how it performed at f20 around 1/8th
https://www.flickr.com/photos/sliabh...n/photostream/
As a dedicated bungler of photography I would welcome any advice, thoughts on this.
Erainn