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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 29 Aug 2017 (Tuesday) 07:33
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Three new tilt-shift lenses: TS-E50mm f/2.8L, TS-E90mm f/2.8L, and TS-E135mm f/4L

 
AJSJones
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Sep 02, 2017 10:34 |  #31

The MTF charts look promising, although what happens at the edge of the image circle (at 30-ish mm on the X axis) will await testing. From A new (Japanese) TS-E site http://cweb.canon.jp/e​f/special/ts-e/index.html (external link)

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Sep 02, 2017 13:06 |  #32

The galleries from the new lenses on that site are interesting. Not many photos but they are looking good.


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Sep 02, 2017 13:24 |  #33

Anyone notice the 90mm and 135mm DOF scale (albeit useless) show f45!
Am I missing something? Is diffraction not as much of an issue with tilt shift?


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Sep 02, 2017 15:54 |  #34

battletone wrote in post #18442945 (external link)
Anyone notice the 90mm and 135mm DOF scale (albeit useless) show f45!
Am I missing something? Is diffraction not as much of an issue with tilt shift?

Diffraction behaves in the same way. It should be remembered that the softening due to diffraction progresses at a lesser rate than the increase in sharpenss by having a deeper depth of filed.....ie, you're still gaining but not by as much.

Bob


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Sep 03, 2017 10:38 |  #35

Canon Bob wrote in post #18443057 (external link)
Diffraction behaves in the same way. It should be remembered that the softening due to diffraction progresses at a lesser rate than the increase in sharpenss by having a deeper depth of filed.....ie, you're still gaining but not by as much.

Bob

Not really, a deeper DoF does nothing for sharpness at the plane of focus - yet is still affected incrementally by diffraction.


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Sep 03, 2017 12:10 |  #36

cwphoto wrote in post #18443492 (external link)
Not really, a deeper DoF does nothing for sharpness at the plane of focus - yet is still affected incrementally by diffraction.

If one has to stop down that much, then we are talking macro of 3D subjects.
If we are talking macro of 3D subjects, then very few pixels in the image will be in the plane of focus.


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Sep 03, 2017 13:28 |  #37
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CheshireCat wrote in post #18443575 (external link)
[..]If we are talking macro of 3D subjects, then very few pixels in the image will be in the plane of focus.

Then you use the tilt movement and they come in focus.


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Sep 03, 2017 14:03 |  #38

very interested in the 135..


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Sep 03, 2017 19:05 |  #39

Alveric wrote in post #18443639 (external link)
Then you use the tilt movement and they come in focus.

Only if the object is planar and thin :) No matter the angle of tilt, it's always only a plane of focus whether macro or not. The thickness of the object on either side of the plane of focus determines how much is in focus at the aperture.

(Rather a Luddite sig on the histogram:( It's a tool -if you know how use it properly it helps - you know, just like a light meter, only 16-20million readings in one:) Of course, both are useless unless used properly!)


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Sep 03, 2017 19:07 as a reply to  @ Alveric's post |  #40

The tilt and swing don't effect DOF, just the plane of focus. You may still need to stop way down. Granted I've never tried to stop a lens down to f/45, but I've stopped down pretty far.


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Sep 03, 2017 19:08 |  #41

ErgoSpacePig wrote in post #18443665 (external link)
very interested in the 135..

Me too. I'm debating between the 135mm or just selling my Cambo SC2 and buying a Cambo Actus Mini.


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Sep 03, 2017 19:32 |  #42

Scatterbrained wrote in post #18443856 (external link)
The tilt and swing don't effect DOF, just the plane of focus. You may still need to stop way down. Granted I've never tried to stop a lens down to f/45, but I've stopped down pretty far.

I did, once, on my 4x5 and I noticed it in a 24x30 print - never went beyond f/22 after that unless movements didn't quite get there, then the occasional f/32 (if there was no wind etc etc).


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Sep 03, 2017 21:20 |  #43

Scatterbrained wrote in post #18443856 (external link)
The tilt and swing don't effect DOF, just the plane of focus.

Yup, or focus stacking (which fortunately is not automated in Canon firmware).


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Sep 03, 2017 23:49 |  #44

CheshireCat wrote in post #18443924 (external link)
Yup, or focus stacking (which fortunately is not automated in Canon firmware).

Or Magic Lantern or a motorized macro rail. Why doesn't Canon get with the times? (My Oly has that and a bunch of things ML has shown Canon could do if they tried)


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Sep 04, 2017 00:31 |  #45

AJSJones wrote in post #18443990 (external link)
Or Magic Lantern or a motorized macro rail. Why doesn't Canon get with the times? (My Oly has that and a bunch of things ML has shown Canon could do if they tried)

Canon is just going downhill. Maximize returns while it lasts.


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Three new tilt-shift lenses: TS-E50mm f/2.8L, TS-E90mm f/2.8L, and TS-E135mm f/4L
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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