query: Query on focal length of Canon SX520HS
positive_passages.docid: 17968
positive_passages.text: Does 4.0-72mm on the lens when equivalent focal length is 24-432mm mean crop factor of 6×?
negative_passages.docid: 129196
negative_passages.text: Does crop factor still apply to a vintage film SLR lens?
negative_passages.docid: 137585
negative_passages.text: Canon 75-300mm f4-5.6 USM or 55-250mm f4-5.6 IS lens?
negative_passages.docid: 113839
negative_passages.text: How can I visualize or simulate the effect of different focal lengths?
negative_passages.docid: 11625
negative_passages.text: Canon 50mm f1.4 no longer focuses reliably
negative_passages.docid: 30952
negative_passages.text: What is the difference between EF and EF-S lenses?
negative_passages.docid: 95190
negative_passages.text: What should I look for in lenses for long range and close up animal and natural shots?
negative_passages.docid: 94271
negative_passages.text: What is the reference plane used when the minimum focus distance is measured?
negative_passages.docid: 20308
negative_passages.text: Can I use a EF lens with a EF-S camera?
negative_passages.docid: 104610
negative_passages.text: What focal length lens do I need for photographing the moon?
negative_passages.docid: 153578
negative_passages.text: Variable focal length for macro lenses?
negative_passages.docid: 83545
negative_passages.text: What configuration would limit my DSLR's shutter speed to 1/200?
negative_passages.docid: 71557
negative_passages.text: Where do non-standard shutter speeds come from?
negative_passages.docid: 11197
negative_passages.text: How do I convert lens focal length (mm) to x-times optical zoom?
negative_passages.docid: 75334
negative_passages.text: Why do Full Frame lenses and crop body lenses exhibit the same crop factor when used on a crop body camera?
negative_passages.docid: 72405
negative_passages.text: Is it better to upgrade Canon 18-55mm IS kit lens to the 18-200mm, or complement with 55-250mm?
negative_passages.docid: 10570
negative_passages.text: Does sensor size affect lens distortion?