On Tue, 27 Apr 2004 11:46:44 -0600, "sympatico.ca"
wrote:


"AArDvarK" wrote in message
news:qaqjc.172$k24.105@fed1read01...

In my infinite quest for infinite ways to spend money on a hobby,
I now need to know what is available for WA for a 8x10 format
camera. I am a WA user (24mm or less) in the 35 mm world. I am
now foraging into the 8x10 realm. Any suggestions for a lens
with lots of coverage?

A simple base approach, simplisticly, normal lens on a
35mm camera = 50mm, for an 8x10 it's 300mm.

I'm sorry but its not 50mm, its 43mm in fact its 38mm if you just
enlarge the 24x30mm part of the 24x36mm frame.

You can't compare oranges and apples and compare an image with a
1:1.25 ratyion and a 1:1.5 ration. If you enlarge to an 8x10 or 4x5
(the 24x30 part of the neg) than the following applies. The first
figure is the 8x10 FL and the second is the equivilant 35mm
150 = 18.9mm
165 = 20.7mm
180 = 22.6mm
210 = 26.4mm
240 = 30.2mm
250 = 31.5mm

THOM

1/2 of 50mm = 25mm, 24mm actual for your wide angle,
1/2 of 300mm = a 150mm on 8x10. and simply so forth.

Alex



depending on how you measure/compare it (image diagonal/different
proportions and so on) 24mm in 35mm equates to around 173mm to 194mm in
8x10.

(useful excel tool here http://medfmt.8k.com/mf/lenses3.html - you can
download it )

There is also the feeling that many have (purely illusiory) that they don't
need to use a lens as wide with 8x10 as they do with smaller fomats.

24mm is a much used lens by me in 35mm. In 8x10 my 210mm or 250mm often seem
plenty wide enough. my 159mm/165mm lenses seem REALLY wide.....