Contributed Site Reviews
Welcome to PHOTONet
IndexThis additional
page is devoted to reviews by outside contributors received with thanks -
there's so much photography on WWW now that it's almost impossible to
visit every site personally.
From Harold M Merklinger
One of the neatest items I've come across is Nick Sushkin's On Line Depth
of Field Plotter. This is a form that allows you to enter the focal length
of your lens, a set of apertures and a range of distances. The program
returns a graph of depth of field as a function of distance, colour-coded
for the f-stops you
entered. If that were all, it would just be interesting enough. But, Nick
Sushkin's formulae for calculating depth of field are not the usual
approximations. His formulae work in the close-up range without separately
compensating for the changed effective f-stop. Nick neatly bypasses three
of the standard approximations. Try Nick Sushkin's Depth of Field
On-Line Plotter. Only limitation seems to be that the 1/30 mm circle of
confusion is really only appropriate for 35 mm cameras. (And one can't
change it.) You might also look at my new-and-still-under-construction
page. I find the NSTN server seems a bit limited, but I think it works most
of the time. Try Merklinger's Photo
Books.
From: Robert O. Wilkinson
While I was clicking around trying to find any reference to
Lasergraphics after reading the review of their film recorder in Photon, I found some lovely B/W photos by Theo
Kelderman in the Netherlands, at The Art Kelderie. He seems to be more
into painting now, and I don't relate well to this work, but there are
20 or so (IMHO) beautiful, moody scenics/nature pictures, esp images 20-
31 on the "quick" index. His "quick" view is extremely wide and has
some mapping problems - you don't always get the pic you click on, but
you can get it directly as pics have filenames attached. He's got space on the xs4all server, which has a lot of (>1000) STRANGE
homepages.