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Thread: Call you tell the diff ? Tilt and Shift vs Photoshop

  1. #21

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    Quote Originally Posted by rueyloon
    ok

    here's the answer

    1 is PSed while 2 is shot with a TS lens.

    I cheated abit with 2 because I didn't use a tripod, there is still abit of distortion due to the camera being not level, hence you can say I had to correct it about 5% or so. But with 1, it is shot totally upwards, hence it is 100% PSed. I overlay the 2 images and try to make them match through editing. The 2 shots are quite heavily cropped. If you overlay the 2 images on PS and look at them, you'll see the there is a U shaped distortion on the 1st image, it could be due to lens etc or what ever.

    My own conclusion is this; it is possible to almost emulate a TS lens, but 1 thing is that while you can correct for the converging verticals, the image will look stumpy. Without a "correct" photo for reference, you don't know how much to elongate the image to compensate for it.



    cheers
    What you're referring to is barrel distortion. This, too, can be corrected in PS using Panorama Tools. Give me the original and I will show you. You can check for straightness using the grid overlay in PS.

  2. #22
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    No amount of PS'ing will save you when a client demands that the original work be done on film.

    This is where using PS and other digital tools fall apart big time, when it comes down to getting it right in the first place.
    The Ang Moh from Hell
    Professional Photography - many are called, few are chosen!

  3. #23

    Default solid man!

    Quote Originally Posted by xl1
    #1 is PS
    #2 is Tilt shift
    Master Yoda!

  4. #24

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    Quote Originally Posted by Ian
    No amount of PS'ing will save you when a client demands that the original work be done on film.
    Eh? Digital files can be outputted to very high res film or trans (or just about any other media needed for broadcast or production). I used shoot in 120, get it digitally adjusted, montaged and output to 4" x 5" Ektachrome trans for production.

  5. #25

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    Quote Originally Posted by StreetShooter
    What you're referring to is barrel distortion. This, too, can be corrected in PS using Panorama Tools. Give me the original and I will show you. You can check for straightness using the grid overlay in PS.
    ya, how you correct a curved distortion ? where can I find this panorama tools ?

    cheers
    36frames Wedding Photography - http://www.36frames.com
    rueyloon - http://www.rueyloon.com

  6. #26

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    Ruey Loon,

    I would appreciate if you could describe the steps in PS that you did to emulate a TS effect.

    Many Thanks.

  7. #27

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    here are the 2 original files shrinked down to size

    http://www.36frames.com/pc-1ori.jpg
    http://www.36frames.com/pc-2ori.jpg

    I didn't use a tripod, hence you can see even with the one with the TS lens there is bit of "reverse keystone".

    cheers..........
    36frames Wedding Photography - http://www.36frames.com
    rueyloon - http://www.rueyloon.com

  8. #28

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    are both bictures from the same lens?
    the unshifted one seems to have some flare at the middle top portion.

  9. #29

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    So how?
    How to use keystone perspective to create a good pic?

  10. #30
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    Quote Originally Posted by Feinwerkbau
    Eh? Digital files can be outputted to very high res film or trans (or just about any other media needed for broadcast or production). I used shoot in 120, get it digitally adjusted, montaged and output to 4" x 5" Ektachrome trans for production.
    Yeah I know, I do it all the time, however it is not cost justifiable for 35mm in most cases.
    The Ang Moh from Hell
    Professional Photography - many are called, few are chosen!

  11. #31
    Senior Member denniskee's Avatar
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    1) TS Lens

    2) PS
    photography makes one sees things from all angles.

  12. #32
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    Quote Originally Posted by Ian
    Yeah I know, I do it all the time, however it is not cost justifiable for 35mm in most cases.
    And if time is money, and you got say just 10 of these to shoot for $, you're better off getting the TS/PC lenses

  13. #33

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    You can download Panorama Tools from here:

    http://home.no.net/dmaurer/~dersch/Index.htm

    The instructions are on the website as well.

    I've corrected the converging verticals and barrel distortion here:

    http://streetshooter.clubsnap.org/barrel.html

    You will need to mouse-over the picture to see the difference in barrel distortion, because it is rather subtle. I used a value of 15.

  14. #34

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    Quote Originally Posted by StreetShooter
    You can download Panorama Tools from here:

    http://home.no.net/dmaurer/~dersch/Index.htm

    The instructions are on the website as well.

    I've corrected the converging verticals and barrel distortion here:

    http://streetshooter.clubsnap.org/barrel.html

    You will need to mouse-over the picture to see the difference in barrel distortion, because it is rather subtle. I used a value of 15.
    Hi,

    I looking for a software which can do polar coordinate along the horizontal axis only, to correct distortion for wide angle stitched photos. U know any software which can do that?

    Thanks...

  15. #35
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    Quote Originally Posted by Watcher
    And if time is money, and you got say just 10 of these to shoot for $, you're better off getting the TS/PC lenses
    You got that right. I can be called 'old school' here but I've always held that getting it right on film (or digital) at the shooting stage is preferable to post shooting manipulation on a PC. This means aquiring far more skill as a photographer but it pays off in the long haul. Besides which the cost of producing a tranny from a digital file is expensive and in most cases when working with 35mm not cost justifiable if the client wants a number of shots transferred.

    For 120 and larger formats a far superior method is to use a technical a.ka. view camera, that solves all the problems in one quick and easy package
    The Ang Moh from Hell
    Professional Photography - many are called, few are chosen!

  16. #36
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    Quote Originally Posted by Ian
    For 120 and larger formats a far superior method is to use a technical a.ka. view camera, that solves all the problems in one quick and easy package
    Yes, offcourse, but also alot more hassle to use a LF, more sweat ;-)

    I am still looking for an ideal MF with shift and has to be an SLR......:-),although Graflex used to produce 4x5 SLR's!

    HS

  17. #37

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    Quote Originally Posted by AReality
    Hi,

    I looking for a software which can do polar coordinate along the horizontal axis only, to correct distortion for wide angle stitched photos. U know any software which can do that?

    Thanks...
    I've used Max Lyon's PTAssembler before (which basically is a user shell for PanoTools). Pretty good for panoramas. Used to be freeware, now it's shareware.

    http://www.tawbaware.com/ptasmblr.htm

  18. #38

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    anyone care to fill me on whats a T-S? Btw,that park is very near my house..muahaha.

  19. #39
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    Quote Originally Posted by rueyloon
    ok
    My own conclusion is this; it is possible to almost emulate a TS lens, but 1 thing is that while you can correct for the converging verticals, the image will look stumpy. Without a "correct" photo for reference, you don't know how much to elongate the image to compensate for it.
    If the film/sensor format and the focal length of the lens are known, you have enough information to determine how much to compensate - no reference needed.

  20. #40
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    Quote Originally Posted by sniperleow
    anyone care to fill me on whats a T-S? Btw,that park is very near my house..muahaha.
    tilt-shift

    try google for the meaning

    btw, anyone want to try this?

    http://www.dennisonbertram.com/hackm...ft-pc-lens.htm

    all u need is a plunger

    sniperleow > your avatar looks familiar...are u someone that i know?
    We are HDD of PC & FT are MB add to storage;
    so PC never hangs with enormous storage capacity - LKY

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