Other Brands I receive emails from time to time asking why I write so much about Canon gear when I'm covering 35mm topics. The answer is that it's what I own. On this site I only personally review products that I own or have ready access to because I'm interested in them. If you have extensive knowledge of another manufacturer's lens line and would like to write a parallel piece I'd love to hear from you. Submission guidelines are available.
Most newcomers are hung-up on the question of sharpness.
Some shoot test charts and otherwise fret over whether this lens is as sharp as that lens. The truth is that while sharpness and resolution are important there are other characteristics of lenses that are of equal if not greater importance. These include contrast, freedom from flare and distortion, mechanical reliability, quality of construction, ease of use and of course price. Modern computer design processes and engineering techniques allow manufacturers to create lenses at reasonable prices with performance only dreamed of as recently as 15 years ago. The other side of the coin is that some designs of the past are superb and have scarcely been surpassed.