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Old July 14th, 2009, 11:20 AM
Bart_van_der_Wolf Bart_van_der_Wolf is offline
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Join Date: Jun 2006
Location: Netherlands
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Quote:
Originally Posted by Michael Fontana View Post
Thanks a lot, Bart

yeah, that looks pretty impressive, I agree!
Did you worked the vertical lines ? - it looks pretty good - low distortion at the center - while having some clearly visible (but not to bad) at the corners with the shift of 8.
The shifts of 4 - 6 looks be pretty good, while at 8 it starts to become nasty. We did see it on your other shots, too.
The verticals were vertical because I placed the camera back vertical (parallel to the box edges). No other post processing was done to correct for keystoning.

Quote:
Good idea to have the tilt going paralell to the boxes face - is the tilt good visible and controllable in the viewer or do you need live-view?
I have the Ec-S groundglass in my camera, so the viewfinder is a bit darker when using a lens like this f/3.5 . It is however very accurate and allows to judge the tilted sharpnes (and I've AF microadjusted the lens, so I get a focus confirmation (beep) if the focusposition is covered by one of the AF sensors). It can beused like that when not shooting from a tripod. However, when shooting with a tripod, Live View is so much more accurate that I use that a lot. Shooting tethered is of course another option which also offers a larger preview.

Quote:
... That example was taken with the Perspectar:



it's nose diameter is about 35 mm, so you can put it everywhere, while bigger lenses require to demolish some buildings at the modell for allowing a good position.
Yes, that's a perfect tool to get inside the streets of a scale model or inside a building if the roof is removed. The TS-E 24mm is too bulky for that (82mm filter diameter! The Pola filter was expensive), and it's a staight shooter, not at 90 degrees without a mirror. Might be an interesting DIY experiment, constructing a (front surface) mirror gizmo.

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The difference between 11 and 16 in your DOF-gif is quite obvious, I think the tilt helped a bit for that, too.
Yes the tilt, but also the deconvolution sharpening. I used more sharpening than needed at f/8 or wider, to compensate for the diffraction at the pixel level. At a 300 PPI output size, it would be hard to see the difference between f/11 and f/16 (apart from the DOF gain) in a print. But when planning for larger output, the trade-off becomes more difficult.

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Can you change the tilt orientation, (vert/hor) as well as with the older TSE-lenses ?
Better! This lens (just like it's 17mm sibling) also allows to choose between parallel or crossed (or an angle in between) Shifts and Tilts without screwdriver. There is more chance of vignetting when shifting and tilting in parallel to the same direction (the image circle poses a limit).

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Beside the use as a shift for architecture photography, it can be used in modell photography as well, for sure not in all situations, but for some.
Indeed. It's a very versatile lens, offering many creative possibilities in addition to its technical problem solving ones (just like a view camera, but in a smaller package). It is expensive and heavy though.

Bart
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