Results 1 to 8 of 8

Thread: tilt-shift and bellows?

  1. #1
    Join Date
    Jun 2015
    Posts
    30

    Default tilt-shift and bellows?

    Hi!

    Does anyone have experience shooting jewellery with tilt-shift using bellows? Specifically the old nikon PB-4 bellows. I just bought one and it's amazing but I'm looking for a good flat-field lens. The lenses I have now are too curved like most normal lenses. I get ugly blurring the more I tilt. I think it's due to the curves of my lenses.

    For those unfamiliar with tilt-shift photography or view cameras - it's a way of angling the lens to change the plane of focus - in product photography you can capture much more of your subject in focus than with a normal angle lens. For example, in macro photos of a necklace with a nice dramatic composition, only the one focus point is actually sharp and the rest of the necklace gets progressively fuzzy. Sometimes I really like when everything else is out of focus except that one specific point to highlight an area, but for certain things I want it ALL sharp. You could take multiple shots with different focus points then stitch them together, but I'd rather be making stuff than spending extra time with photoshop.

    good examples and better descriptions than mine:
    http://nikonrumors.com/2010/11/27/gu...t-lenses.aspx/

    https://www.photigy.com/photographin...s-bonus-video/

  2. #2
    Join Date
    Dec 2009
    Location
    Central London
    Posts
    7,990

    Default

    Very interesting, but it will take more than casual read to take all this in. As an avid maker, I begrudge every minute spent on my time-consuming photography.

    At the same time I recognise that whatever I show on line can only appear as good as the photography will allow.

    I also recognise that some of our members are on a tight budget and must use their phones. So I have to rein in my impatience when they present blurry efforts, often the wrong way up, for our admiration in show and tell. Dennis.

  3. #3
    Join Date
    Jun 2015
    Posts
    30

    Default

    I figure most people wouldn't have experience with it but I wanted to ask, on the chance that someone here is also into photography. My aim is to assemble a little permanent rig. Once a piece is done I can plop it down and quickly snap a few angles, hopefully needing very little attention in the computer after the fact.

  4. #4
    Join Date
    Jul 2009
    Location
    Romsey
    Posts
    4,952

    Default

    If I want improved depth-of-field I use focus stacking sw
    TBH, the only real application I've seen for tilt lenses has been for architectural - I've not seen it used in macro, and given there's limited DOF anyway on wider apertures, I'm not sure how much benefit it'd give.
    Interested to see what you do with it, but I've got a solution that works adequately for now.

  5. #5
    Join Date
    Jun 2015
    Posts
    30

    Default

    Is there a plug-in you use for focus stacking or do you do it manually? I want to spend the least amount of time in the computer. I did stacking manually a few times and I wanted to cry. I'm not hung up on using the bellows or anything, I just want the quick and painless way to get broad DoF on larger pieces at low angles. In the links I posted there are a few good examples of what the tilt can do with necklaces.

  6. #6
    Join Date
    Aug 2010
    Location
    England
    Posts
    1,894

    Default

    I also use Nikon cameras among others but have never used a bellows attachment, I find the Nikkor 60mm Micro with an aperture of f32 gives sufficient depth of field for jewellery photos, I also use Photoshop7 for any adjustments required.

    James

  7. #7
    Join Date
    Jul 2009
    Location
    Romsey
    Posts
    4,952

    Default

    Quote Originally Posted by kraftrourke View Post
    Is there a plug-in you use for focus stacking or do you do it manually? I want to spend the least amount of time in the computer. I did stacking manually a few times and I wanted to cry. I'm not hung up on using the bellows or anything, I just want the quick and painless way to get broad DoF on larger pieces at low angles. In the links I posted there are a few good examples of what the tilt can do with necklaces.
    Helikon Focus is the one I use. Needs to be a camera where the focus can be controlled electronically, but there's a fair compatibility list. It generally does well left to its own devices, but too wide an aperture and highlights will upset it (blows the detail in subsequent layers)
    I don't usually go above f22 on the 105mm macro as then you start to see diffraction creeping in due to the small aperture.

    I've also been using Lightzone lately for raw adjustment & basic editing - had considered Lightroom, but not inclined to pay subscription fees...

  8. #8
    Join Date
    Jun 2013
    Posts
    669

    Default

    I have some experience of bellows, not really tilt-shift lenses, but then my large format tilts.

    Of course this results in blurring - you are altering the length the light travels. For different parts of the lens it will be longer (if tilted forwards) against shorter (tilted back). This (almost) inevitably results in blurring. The only way to limit / avoid this is to use a very small aperture and this will increase the need for either exposure times or light. It can be done and lots of architectural photography does this to 'correct' perspective.

    You'll also notice that the digital 'tilt-shift effect' that can be created in photoshop & others (or more likely there is now an automatic filter to this effect) effectively applies a graduated blur to the top and bottom of the frame.

    In the following image I craftily photographed an amazingly realistic slate model (as if it were full-scale) then cunningly applied a digital tilt-shift effect to make it look like a model.

    Click image for larger version. 

Name:	13889833648_432c6483b1_n.jpg 
Views:	15 
Size:	40.5 KB 
ID:	8432
    Attached Thumbnails Attached Thumbnails 13889833648_432c6483b1_q.jpg  
    Last edited by metalsmith; 11-12-2015 at 07:54 PM.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •