On Tue, 5 Jun 2001 14:19:32 -0500 (CDT) "Jonah D. Klevesahl"
<[EMAIL PROTECTED]> writes:
> I'm looking to spend a weekend (and a lot of money on film) to do some
> pretty extensive field testing of the lenses I currently own, as well
as
> some I'll be renting to help determine which telephoto (200+, zoom or
not)
> I should buy. I've read the actual report numbers using USAF test
targets
> and such on most of these lenses, but I'm finding a general lack of
> real-world examples. so rather than whine about it I'm going to do
> it myself.
>
> I was wondering what those on this list do to "test" a lens when they
get
> it? do you setup a test board of some kind and shoot at varying
apertures
> and shutter speeds? do you just go out and shoot what you normally do
and
> try to compare quality? and when you actually compare quality, is it
on a
> light table (assuming you shoot slides), scans, or enlargements?
>
> and aside from documenting EVERYTHING, is there anything else I should
> keep note of? (I'm going to try and do this all in the same two hour
> period, so lighting won't change much.)
Take a look at what I've done:
http://www.kjsl.com/~dave/lenstest/lenstest.html
If I did this again, I'd zoom in on the color advertising portion of the
newspaper instead of black and white text. I'd repeat the test to get
two images of each scenario. A better sun angle might have helped (sun
behind the camera). ...And I'd choose a fence with vertical slats ;-)
Dave Herzstein
[EMAIL PROTECTED]
http://www.kjsl.com/~dave
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
