Re: NIKON autofocus choices and IR

["Jaap Los" <imagefotografie@xxxxxx>]

----- Original Message -----
From: Kirk B. Davis <smartcookie@xxxxxxxxxxxxxxxxx>
To: <infrared@xxxxx>
Sent: Monday, August 28, 2000 6:37 PM
Subject: NIKON autofocus choices and IR


Kirk,
I can understand your choice for a Nikon. I have worked with Nikon's all my
life and I never had any problems with them (I'm really not a shareholder of
Nikon!).
The 80 is indeed not suitable for IR  I suspect that the 100 and the 5 are
also not suitable for IR. Other members of this list will react on this, I'm
sure. The 90 series and the 4 are OK.
I own two F801(S)-8008. The are both excellent for IR and are autofocus. Do
you know, that the autofocus automatically makes a focus correction for IR?
When I use a red filter the correction is very little but when I screw a
#87C filter on the lens, the focus correction for true IR is considerable!
So you do not need a IR mark on your lens. It even works on my 28-85 mm
autofocus zoomlens. The focus correction is small for 85 mm and again
considerable for 28 mm. This is something
I found out some months ago while playing a bit with the camera. I don't
know whether or not this correction works on all the other Nikon's, on the
801(8008) it does!  This is a great advantage as I always use autofocus
while shooting IR and I do not have to use small apertures for being sharp.
My focus is always pin point!  Part of your problems  might be solved now!
Greetings,
Jaap Los
The Netherlands

See also my infrared photography homepage at:
http://home.wxs.nl/~losjb/hometest.html
with lots of infrared photographs, some of them lith-printed.

See alo my website
http://home.wxs.nl/~losjb/JBLhomepage.html
for those who are interested in company matters



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