LENSBABY: recent link in dpreview news letter - WHY

Discussion in 'Digital SLR' started by Ken Ellis, Apr 10, 2005.

  1. Ken Ellis

    Ken Ellis Guest

    Anybody care to enuciate the value of this $150 attachment? Looks like
    it gives what a vignette+gaussian blur layer does in photoshop. The
    selective sharpness is 101 too; or say Andromedas "VariFocus Mask'.

    I like the name "lensbaby". That's pretty cool. What am i missing
    here?

    convivially
    Ken
     
    Ken Ellis, Apr 10, 2005
    #1
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  2. Ken Ellis

    Bubbabob Guest

    It has no value.
     
    Bubbabob, Apr 10, 2005
    #2
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  3. Ken Ellis

    andrew29 Guest

    It's not an attachment, it's a lens. And no, it is not possible to
    dupicate the effect of moving the plane of focus in photoshop.

    Andrew.
     
    andrew29, Apr 10, 2005
    #3
  4. Ken Ellis

    Paul Mitchum Guest

    Lensbaby: So you don't have to bid on a Holga on ebay.
     
    Paul Mitchum, Apr 10, 2005
    #4
  5. Ken Ellis

    McLeod Guest

    It is quite simple to duplicate the effect of moving the plane of
    focus using the Lens Blur filter in Photoshop CS.
     
    McLeod, Apr 10, 2005
    #5
  6. Ken Ellis

    Ken Ellis Guest

    Thanks for pointing out that it is a lens - not an attachment..missed
    that on my perusal. Andrews comment made me go back an re-investigate.
    Originally checked dpreview.
    went to: http://www.photographyblog.com/reviews_lensbaby.php
    this time.

    However..looking at the photo examples...all are very simply
    acomplished in photo shop using a simple layer masque and or
    gradients or selection vignette..etc.

    What made me go back an reinspect a review was the comment
    of "moving the plane of focus". Functionally this doesn't do that.
    A "view cam" would be an example of a tiltable-movable focus
    plate; would snap this up in a second if it did something like that.
    The Lensbaby web site says "moves within a frame of focus".
    A bit different.

    I am not aware of a way to truly shift the frame of focus, in this
    sense, with a regular dig cam. Would be a remarkable feature and
    involve tilting the sensor. I can sorta do that using composits in
    photoshop, but i don't have an algorithm/applet to blend the layer'd
    shots and it's a manual process(works good to increase the dof for
    macros btw). At best it appears lensbaby, when bent, moves the
    spot of focus across the focal plane- it focus a "slice", if you will.

    Again..if i'm missing something, i welcome the dialoge. Andrew rightly
    corrected the "attachment" thing.

    I guess another question would be; and mindful of "optics" purists is
    - what is the quality of lens i am sacrificing to use this puppy..to
    get this effect; particularly considering post-process abilities.

    rgds and respect
    Ken
     
    Ken Ellis, Apr 10, 2005
    #6
  7. Ken Ellis

    andrew29 Guest

    No it isn't, for the very good reason that tilting the plane of focus
    doesn't just blur things -- it makes other things sharper.
    Sure it does. The lens is on a flexible mount, so you can tilt and
    shift.

    Andrew.
     
    andrew29, Apr 10, 2005
    #7
  8. Ken Ellis

    McLeod Guest

    But it doesn't make things sharper than an already sharp image, so if
    you start with a sharp image it's quite simple.
     
    McLeod, Apr 10, 2005
    #8
  9. Ken Ellis

    Paul Mitchum Guest

    You're both right: It does change the plane of focus, but I can't
    imagine using it as a tilt or shift lens to any good effect.
     
    Paul Mitchum, Apr 11, 2005
    #9
  10. Ken Ellis

    andrew29 Guest

    I doubt that it's so very easy to replicate the effects of tilt &
    shaft and various interesting lens aberrations with Photoshop. But In
    the hands of a skilled operator, it might be possible, I guess.

    Andrew.
     
    andrew29, Apr 11, 2005
    #10
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