----- Original Message -----
From: "F. Craig Callahan" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 02, 2001 8:15 PM
Subject: Re: EOS Re: IS vs. non-IS Sharpness (300/4L)
> However, as I'm sure you know, the degree of sharpness required for offset
> printing is often quite a bit less than that required for photographic
> enlargement. Of course, making the sale in the first place may require a
good
> deal more sharpness than the reproduction does. (In other words, having a
photo
> in print isn't necessarily an indicator of technical excellence, although
> getting someone to select that photo might be.)
>
I can't really argue with your points of view, since we are getting into the
subjective realm of 'what is sharp'. I have always examined my slides with
an 8x or 10x loupe before I send it anywhere as do the photo editors for
magazines and photo libraries.
Like you, I'm also quite meticulous with assessing the sharpness of my
slides, but I guess we must ask ourselves the question: "when is sharp,
sharp enough?" What about all the other aspects of a lens characterestics
that make up an excellent photo: contrast, colour, bokeh and general
performance? Do you really think you would see the difference between an
enlargement of a real life photograph of, say 40x50cm between the IS and
non-IS version if both photos were taken under same conditions? Well I can
tell you, in some circumstances there simply would not be an enlargement for
the non-IS version because the photo simply could not be taken.:-)
I rather hope that their would be a DO 300/2.8 IS in the not too distant
future. We could all sell the f4 (IS or not IS) in exchange for the best of
all worlds, except maybe price :-)
> Regardless, I still think the non-IS 300/4L is the better value at current
U.S.
> prices.
Yes, it is excellent value, but IMO pretty useless in certain aspects of
wildlife photography.
Regards
Thys
---------------------------------------------------------
Thys van der Merwe
Portfolio of African Images:
http://home.mweb.co.za/te/teknovis
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