Any difference in sharpness at different apertures?
One advantage of the close-up lenses is much greater brightness, for
shorter exposures & better viewing.
Tom
--- Original Message ---
From: Ross Waite <rmwaite@xxxxxxxxxxxxxx>
Date sent: Wed, 8 Sep 1999 14:29:29 +1000
...
> A better option may be a Nikon T series close up lens. These are high
> quality 2 element designs, specifically for use with focal lengths from
> 80mm to 200mm, and have been highly recommended by John Shaw in his book
> "Closeups In Nature". They come in 2 strengths and 2 filter sizes:
>
> 3T = mag +1.5, 52mm
> 4T = mag +3.0, 52mm
> 5T = mag +1.5, 62mm
> 6T = mag +3.0, 62mm
>
> I have used the 4T with a 49mm to 52mm step up ring on my old Tamron SP
> 90mm f2.5 macro lens with good results. When I am travelling light, it
> saves taking extension tubes to get to 1:1. I have just sent some slides
> for processing with a few test shots using the 4T on the 85 f2. I will
> probably take this combo on my trip next year to UK, Ireland & Europe to
> give me some macro capability without the weight and bulk of either of the
> 90mm macro lenses. I did some direct comparisons at around 1/2 life size
> with the 90/2. I will let you know how they compare.
...
------------------
From:Tom Trottier, ACT Productions Inc.
__o tom@xxxxxx http://www.act.ca
_ \< +1 613 594-4829 fax +1 613 594-8944
(*)/'(*) 199 Holmwood Ave, Ottawa, Ontario Canada K1S 2P3
"Make it as simple as possible, but no simpler" - Einstein
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