I start reading my first issue of Australian Photography, that I've just subscribed to, and I read this,
Article is on page 14 Q&A's to Prashphutita A. Greco.
Q' Terry Murphy writes in for advice on a new camera system and what to buy, Canon EOS500D with 18-200nn f3.5-5.6 IS Lens V's the Olympus PEN E-P2 with a Zuiko EZ-1818 18-181mm Lens
(Canon EOS 500D with 18-200mm Lens) This is whet the author's reply is to the question (Not the complete answer, just the first paragraph that I found interesting)
A' "Since the Canon body you're considering has a 'lens crop factor' of 1.6x, that Canon lens will be 28.8mm (in 35mm equivalent terms) at it's wide-angle end."
Now I could be wrong and happy to be proved that way, but EF-S is for a crop sensor body and will have 18mm at 18mm not an EFOV of above as answered.
If this was a EF lens on said body, then the 18mm would have an EFOV of 28.8mm, but it would still be an 18mm lens, so the angle is restricted to an EFOV via the diffenert surface field of the opening of the lens, Correct?
Here is what Canon writes on it's site regarding this lens,
"The EF-S 18-200mm f/3.5-5.6 IS is a compact, EF-S lens with high magnification – approx. 11x. It features an 18-200mm zoom ratio (the 35mm film equivalent focal length is 29-320mm) and has a maximum aperture of f/3.5-5.6. Designed to appeal to entry-level and advanced amateur users looking for a lens with an optical Image Stabilizer and large focal length range, it weighs just 595g and measures 78.6 x 102mm. The lens offers 0.45m minimum focusing distance at all zoom position.
The EF-S 18-200mm f/3.5-5.6 IS is designed exclusively for use with EOS cameras featuring an EF-S lens mount – including the EOS 50D, EOS 1000D, EOS 450D, and earlier models."
So is the author missing the word "FILM" or Full Sized Sensor in his answer? does it sort of make for some confusion when deciding, would for me, and lastly, how is the EFOV to be compaired mentaly when looking at this?
All seems a little bit over the shop to me. The poor bloke asking the question is in his lime light years and speaks of having little to no experience with DSLR, beside a short stint with a Canon Powershot S2 IS.
Not sure if I'd class that as too helpful. What do you think?