Digital BW, The Print

Long night.
Mark

On Dec 10, 2004, at 1:39 PM, Carl Schofield wrote:

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>  Mark,
>
>  No, I did all of the stitching manually using layers, masks, etc.� If 
> I
>  were going to do a lot of this I would definitely try the XPoints and
>  the� PTMac tools that Roger mentioned in his post.� Also, file sizes
>  get ridculously large (>2 gb) when doing this in 16 bit RGB with
>  several layers active at once.� The computer I used had only 768 mb of
>  ram so I had to do this in 3 sections and then stitch the sections
>  together.
>
>  Carl
>
>  On Dec 10, 2004, at 1:25 PM, Mark Savoia wrote:
>
>  >
>  >
>  > Great work Carl. I vote for the digital. Did you stitch with 
> Photoshop
>  > automation?
>  > Mark
>  >
>  > On Dec 10, 2004, at 12:57 PM, Carl Schofield wrote:
>  >
>  >> Just to follow up on my previous post about stitching, I took some
>  >>� comparison shots yesterday at a local waterfall with a 4x5 and a
>  >> Canon
>  >>� 10D.� Here is a side by side comparison of a stitched composite 
> image
>  >>� (18 frames (landscape orientation) in a 3 column by 6 row matrix)
>  >> made
>  >>� with the Canon 10D and 135mm f/2 L lens and a scanned (Epson 3200 
> set
>  >>� to produce a 16x2016 bit grayscale at 360 ppi) image from a 
> Polaroid
>  >>� type 55 4x5 negative, shot with a Tachihara 4x5 field camera and
>  >>� Fujinon A 240mm f/9 lens.� Exposure for the 4x5 was 2 seconds at 
> f/32
>  >>� (EI 25) and for the 10D images 1/6 sec f/16 (EI 100).� The 
> comparison
>  >>� images are side by side screen grabs in Photoshop at 8, 25, 50 and
>  >> 100%
>  >>� of image size.� The 4x5 image is 83.6 MB and the stitched 10D 
> image
>  >> is
>  >>� 80.1 MB and both are 16 bit gray. The 25% image is approximately 
> the
>  >>� appearance when the images are printed at 16x20 inches.� The 
> stitched
>  >>� 10D image compares quite favorably to the 4x5, although the 
> stitching
>  >>� is very tedious and time consuming.� You would need a 40 MP 
> digital
>  >>� camera to get single shot images comparable to the size and 
> quality
>  >> of
>  >>� either the 4x5 or stitched 10D images.
>  >>
>  >> http://homepage.mac.com/scho/forweb/index.htm
>  �
>
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