Digital BW, The Print

Yes, architectural work has never been so straightforward. One great bit 
of free software for PC (or at least free-ish - small donation 
requested) is PTLens, available either as a plugin or standalone. It 
gives us all totally distortion-free lenses (thanks also to Prof Helmut 
Dersch's Panorama Tools that it uses). The 12-24mm I use for most work 
isn't bad anyway, but it's nice to get zero distortion. Also corrects 
vignetting and CA, and you can batch a whole set of images taken with 
the same lens (even at different focal lengths) and have a coffee while 
the computer corrects them all.

I can even shoot on fisheye and then correct to rectilinear for really 
wide stuff, though there is still a little CA that isn't easily removed 
that would be a problem in really critical work. Thinking of replacing 
the 12-24 by a 10-20 as well to get a little wider.

What problem indeed!

Peter Marshall
petermarshall@...    
_________________________________________________________________
My London Diary	              http://mylondondiary.co.uk/
London's Industrial Heritage: http://petermarshallphotos.co.uk/
The Buildings of London etc:  http://londonphotographs.co.uk/
and elsewhere......



claudej1@... wrote:

> 
>In a message dated 12/20/2005 7:33:36 AM Pacific Standard Time,  
>DigitalBlackandWhiteThePrint@yahoogroups.com writes:
>
>Wrong,  there's a big problem...they don't have anything to equal
>typical film  lenses of 20mm, for example. 
>
>
>
>I do architectural work with a 17-40 zoom and a 14 mm. I correct keystoning  
>in PSCS2 and also shoot RAW to take care of residual CA in the  corners.
> 
>What problem?
> 
>Claude Jodoin
>
>
>[Non-text portions of this message have been removed]
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