'Daniel'
TPF Noob!
Not sure what you mean by "classic" but generally the more expensive you go the faster the auto focusing.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Daniel said:Not sure what you mean by "classic" but generally the more expensive you go the faster the auto focusing.
Some USM is definitely faster, but there are two types of USM (thank Canon! :? ). The ring motors are the really fast ones. These are usually the ones you can manually focus without moving the switch to "M". Though some don't have a ring motor and have a clutch to allow this, like the 50mm 1.4.cumi said:There are for example Canon lenses with and without "USM".
I got that from dpreview where it said aperture range is f2.8-f8 which is presumably the settable range, rather than the zoom range, bit misleading really.Lumix said:Rob The spec on my camera (Panasonic FZ20) is F2.8 from one end of the zoom to the other. This is one of the main features of this camera. Unlike most zoom lenses that have a decreasing aperture at the full telephoto end. Go to Panasonic's site or read the review at "Imaging Resource". Not to be confused with the later FZ30 which dose drop from F2.8 to F3.5. Where do you get the F8 from?
From the review:
Announced at the end of July 2004, the DMC-FZ20 is the flagship model of the third generation of 'super zoom' cameras from electronics giant Panasonic, and is a direct replacement for the FZ10. Like its predecessors (and the simultaneously announced DMC-FZ3) the FZ20 sports a Leica-branded DC Vario-Elmarit zoom with a whopping 12x optical range (36-432mm equiv) and a constant F2.8 aperture. It also boasts a newly-improved optical image stabilisation system and the Venus II engine, which, according to Panasonic's documentation, is now equivalent to shooting at 3 or 4 shutter speed steps faster.
Daniel said:How does it deal with chromatic aberration Lumix?