What are the advantages and disadvantages of zoom lenses with a wide range of focal lengths?
136611
Why choose an 80-200mm over an 18-200mm lens?
140954
what's the relation between sensor size and image quality (noise, dynamic range)?
51707
What low-cost non-fisheye wide angle lenses are available for Canon and how do they compare?
17968
Does 4.0-72mm on the lens when equivalent focal length is 24-432mm mean crop factor of 6×?
88406
What does different focal length offer me?
150402
Is it normal for focal length to change while focusing?
113839
How can I visualize or simulate the effect of different focal lengths?
12460
Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?
46184
What should I consider when purchasing a macro lens?
17851
How does using a lens with some focal length on a full frame camera differ from using a lens with "equivalent" focal lens on a crop camera?
133059
How to select lenses for outdoor sports photography?
106897
Why are superzoom lenses small but giant telephoto lenses huge?
53448
Do bigger focal lengths capture more light?
11607
What lenses to bring while traveling? One good wide-telephoto or several smaller ones?
81660
Does autofocus work better with f/2.8 lenses vs f/4 or slower?
35880
Should I postpone buying a zoom lens until I've learned to zoom with my feet?
29080
How do extension tubes affect focusing distance?