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#1
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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
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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
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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
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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 |
#5
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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 |
#6
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No need for a tilt shift lens.
John A. Stovall wrote:
On 30 Oct 2005 10:18:53 -0800, "Scott W" wrote: Why do you assume only LF cameras use a tilt shift lens? They are very common among FF Digital shooters who do architecture and product photos. Canon make three different models. Yes I know of these lenses but I was under the impression that they were more limited then on a LF camera. Nor can your little trick produce the increased DOF one get with a true tilt and shift lens. This is true but then tilting a lens to extend the field of view it fairly limited as well, the scene has to go from close to far fairly smoothly as you go up the photo, if there is say a large bolder or tree in the foreground then tilting is of limited use. http://consumer.usa.canon.com/ir/con...categoryid=156 There is always a need for a tilt and shift lens when quality is what one strives for. There will be cases where a tilt shift lens is needed, but in many cases it is not if one is using a good stitching tool. Scott |
#7
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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 |
#8
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No need for a tilt shift lens.
"Scott W" writes:
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. Yep. Of course, you are stretching out (i.e. reducing) the resolution in parts of the photo when you make the perspective adjustment. Also, it *only* helps on perspective rendering; it doesn't do anything for depth of field control (which is where tilting comes in). I find myself doing perspective corrections in snapshots now -- if the rendering bothers me at a quick glance, I fix it. -- David Dyer-Bennet, , http://www.dd-b.net/dd-b/ RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/ Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/ Dragaera/Steven Brust: http://dragaera.info/ |
#9
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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. |
#10
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No need for a tilt shift lens.
In article ,
Chris Brown wrote: I could probably have got the tops looking sharp as well if I'd stopped down to f/64 You would also have been well into diffraction with that lens at f64. -- To reply no_ HPMarketing Corp. |
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