Canon makes some very sharp two-element close up filters or "lenses" (the
250D and 500D). The two element type maintain their sharpness throughout
the entire frame. I've notice the single element types almost look as if
you're using a soft focus filter for anything outside the middle of the
frame. The filters are an especially good combination with a moderate to
long zoom lense, giving you a range of distance and perspective options. By
the way, the "500" or "250" on the canon filters represents the minimum
focusing distance when set at infinity, and the "D" means the filter is a
two-element type. The 250's are for shorter focal length lenses, while the
500's are for longer lenses. I often carry a 500D with my 100-400mm IS and
it gives exellent results. The two draw backs are: The two element types
are much more expensive (but for me, sharpness is the more important issue,
so I'd rather have the expense). They do not alow continious focusing from
infinity to close-up distances like a true macro lens (not a problem unless
you're switching from distant focusing to shooting macro's on the fly, but
since macros usually require a tripod and maybe some flash set-up anyway,
I'm not usually doing macro shot without taking some time for set up).
Happy shooting, JDW
You can find them on B&H under "filters," then "close-up lenses."
>"Jim Linch" <[EMAIL PROTECTED]> wrote:
>> I went to John & Barbara Gerlach's seminar a while back and he mentioned
>> a "filter" or adapter that could be placed on the end of a lens,
>> allowing close focus and basically turning a non macro lens into a macro
>> lens? ...
>I think you are looking for a "Close-up Adapter Lens" or "Diopter".
>The high quality ones have more than one glass element:
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
