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No need for a tilt shift lens.



 
 
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  #1  
Old October 30th 05, 06:18 PM
Scott W
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.
This is what a very wide angle photos looks like without shifting the
lens in software.
http://www.pbase.com/camping05/image/51504534/large
Note how everything seems to be pointing in as you good up in the
photos.

This is the same panoramic but with shifting the center of view
http://www.pbase.com/camping05/image/51504652/large

To see a higher resolution view of either of these two photos click on
original.

Now this photos does not have the resolution of a LF camera, but then
this was made from just four photos stitched together. There is little
limit to the resolution, just add more photos. This is what 16 photos
stitched together look like.

BTW I am using PTGui to stitch the photos.

Scott

  #2  
Old October 30th 05, 06:36 PM
Malcolm Stewart
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Posts: n/a
Default No need for a tilt shift lens.

"Scott W" wrote in message
oups.com...
I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.


You really ought to post this in the large format ng as well.
rec.photo.equipment.large-format

(I'm familiar with both techniques.)

--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk/oddimage.htm




  #3  
Old October 30th 05, 06:43 PM
Scott W
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

Malcolm Stewart wrote:

You really ought to post this in the large format ng as well.
rec.photo.equipment.large-format

I thought about that but it seemed to me that would be a bit of a
troll.

Most of those people have no interest in digital, those who do will see
the post here.

I am amazed at how much improvement this has been in the stitching
tools.

Scott

  #4  
Old October 31st 05, 01:52 PM
Lorem Ipsum
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

"Scott W" wrote in message
oups.com...
Malcolm Stewart wrote:

You really ought to post this in the large format ng as well.
rec.photo.equipment.large-format

I thought about that but it seemed to me that would be a bit of a
troll.

Most of those people have no interest in digital, those who do will see
the post here.


Actually digital printing of LF media is very popular among that group. I
would risk a guess that more than 30% of them scan, then print digitally
with the number increasing all the time and that over time more and more
will be manipulating the image to 'fix' LF movements errors.


  #5  
Old October 31st 05, 01:47 PM
Lorem Ipsum
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.


"Malcolm Stewart" wrote in
message ...
"Scott W" wrote in message
oups.com...
I have read from a number of people the LF cameras have a large


But with today's panoramic tools this seems like much less of an
issue.


You really ought to post this in the large format ng as well.
rec.photo.equipment.large-format


Be kind and remind the OP to wear a flame-proof suit along.


  #6  
Old October 30th 05, 06:53 PM
223rem
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

Scott W wrote:
I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.
This is what a very wide angle photos looks like without shifting the
lens in software.
http://www.pbase.com/camping05/image/51504534/large
Note how everything seems to be pointing in as you good up in the
photos.

This is the same panoramic but with shifting the center of view
http://www.pbase.com/camping05/image/51504652/large

To see a higher resolution view of either of these two photos click on
original.

Now this photos does not have the resolution of a LF camera, but then
this was made from just four photos stitched together. There is little
limit to the resolution, just add more photos. This is what 16 photos
stitched together look like.

BTW I am using PTGui to stitch the photos.

Scott


Nice, but that fat assed lady completely ruined it
  #7  
Old October 30th 05, 09:25 PM
MarkČ
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

223rem wrote:
Scott W wrote:
I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.
This is what a very wide angle photos looks like without shifting the
lens in software.
http://www.pbase.com/camping05/image/51504534/large
Note how everything seems to be pointing in as you good up in the
photos.

This is the same panoramic but with shifting the center of view
http://www.pbase.com/camping05/image/51504652/large

To see a higher resolution view of either of these two photos click
on original.

Now this photos does not have the resolution of a LF camera, but then
this was made from just four photos stitched together. There is
little limit to the resolution, just add more photos. This is what
16 photos stitched together look like.

BTW I am using PTGui to stitch the photos.

Scott


Nice, but that fat assed lady completely ruined it


Better to have an ass than to BE an ass, such as yourself.
Think.


  #8  
Old November 2nd 05, 04:06 AM
Colin D
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.



223rem wrote:

Scott W wrote:
I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.
This is what a very wide angle photos looks like without shifting the
lens in software.
http://www.pbase.com/camping05/image/51504534/large
Note how everything seems to be pointing in as you good up in the
photos.

This is the same panoramic but with shifting the center of view
http://www.pbase.com/camping05/image/51504652/large

To see a higher resolution view of either of these two photos click on
original.

Now this photos does not have the resolution of a LF camera, but then
this was made from just four photos stitched together. There is little
limit to the resolution, just add more photos. This is what 16 photos
stitched together look like.

BTW I am using PTGui to stitch the photos.

Scott


Nice, but that fat assed lady completely ruined it



If your eyesight/monitor was/were any good, you would see that she has a
jersey/jumper tied by the arms round her waist, and you're seeing the
body of the garment. Seems you're the fat ass.

Colin D.
  #9  
Old October 30th 05, 07:11 PM
Ray Fischer
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

Scott W wrote:
I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.


That's the "shift" part of a tilt-shift lens. What the "tilt" part
does is change the plane of focus so that it's not parallel to the
sensor plane.

--
Ray Fischer


  #10  
Old October 30th 05, 09:01 PM
Gregory Blank
external usenet poster
 
Posts: n/a
Default No need for a tilt shift lens.

In article .com,
"Scott W" wrote:

I have read from a number of people the LF cameras have a large
advantage over other cameras because they can shift the lens and
thereby avoid perspective distortion that a camera with a fix lens
would suffer.

But with today's panoramic tools this seems like much less of an
issue.
This is what a very wide angle photos looks like without shifting the
lens in software.
http://www.pbase.com/camping05/image/51504534/large
Note how everything seems to be pointing in as you good up in the
photos.

This is the same panoramic but with shifting the center of view
http://www.pbase.com/camping05/image/51504652/large

To see a higher resolution view of either of these two photos click on
original.

Now this photos does not have the resolution of a LF camera, but then
this was made from just four photos stitched together. There is little
limit to the resolution, just add more photos. This is what 16 photos
stitched together look like.

BTW I am using PTGui to stitch the photos.

Scott


Not a big enough difference between the two to justify your
assertion IMOP & I sort like the distortion in the first ;-)

Many perspective corrections in LF work
are from side to side or near far vanishing point etc. What you fail to
account for is that a LF negative-slide can be scanned at any resolution
not just the relative 300 dpi per segment that the average digital slr
reproduces at.

Therefore the small sensor area for a given image does not
particularly match what can be gotten from a LF film original,....being
that you could and can scan that film original at 8400 dpi-as an
example, and if you chose to do so.

--
LF Website @ http://members.verizon.net/~gregoryblank

"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918
 




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