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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Mar 22, 2007 8:04 am Post subject: Autofocus with manual lenses |
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Orio wrote:
Yes!
I wasn't aware of this camera:
http://photo.net/equipment/contax/ax
Now if Zeiss makes this camera with a digital sensor, I would buy it instantly.
I can do without the house, who needs a house after all? _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
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Jigt
Joined: 16 Mar 2007 Posts: 412 Location: Belgium
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Posted: Thu Mar 22, 2007 10:06 am Post subject: |
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Jigt wrote:
Pentax has a 1.7 teleconverter that gives autofocus on a manual lens.
It also possible to use this converter for macro.
In fact the Pentax K10D gives antishake with M42 lenses. The principle is the same, let the sensor do the work.
Guido _________________ nature pictures at www.ranaphoto.net
My pictures in the http://www.pentaxphotogallery.com/guidofranssens |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Mar 22, 2007 10:26 am Post subject: |
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Orio wrote:
Seymore wrote: |
But you couldn't use it here. This is a MF lens forum, and this negates the MF ability. Sorta like CHEATING. |
No manual focus forum. Manual focus LENSES forum. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
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hacksawbob
Joined: 28 Feb 2007 Posts: 1293 Location: LANCS UK
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Posted: Thu Mar 22, 2007 6:01 pm Post subject: |
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hacksawbob wrote:
In theory could you tilt shift by moving the sensor at an angle to the lens? |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Mar 22, 2007 6:07 pm Post subject: |
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Orio wrote:
hacksawbob wrote: |
In theory could you tilt shift by moving the sensor at an angle to the lens? |
It would be a rather pricey solution for creating a lens baby effect, don't you think? _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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Jigt
Joined: 16 Mar 2007 Posts: 412 Location: Belgium
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Posted: Thu Mar 22, 2007 6:31 pm Post subject: |
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Jigt wrote:
Gues he means as in the expensive Shift lenses.
You can set buildings strait, ad more dept of field in macro's and things like that.
The same principle as a technical camera.
Guido _________________ nature pictures at www.ranaphoto.net
My pictures in the http://www.pentaxphotogallery.com/guidofranssens |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Mar 22, 2007 6:35 pm Post subject: |
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Orio wrote:
Jigt wrote: |
Gues he means as in the expensive Shift lenses.
Guido |
Shift lenses shift parallel, they don't tilt at an angle.
Tilting a lens - of a film or digital plane - produces blurred areas, the more blurred the farther or closer you go from the register distance. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Thu Mar 22, 2007 6:42 pm Post subject: |
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LucisPictor wrote:
Yes, the AX really put some AF functionality to MF lenses.
It did by moving the film towards and away from the lens.
So you would have to move the sensor in the same way, different from the sensors in an IS cam.
The cam I find most interesting is: http://www.digitalkamera.de/kameras/Contax/N_Digital.asp
6 MP fullframe sensor and then the lenses for Contax N und Contax 645. Wow!
But this cam was very expensive and is hard to get, and if you still have to pay a lot of money. I've seen offers you get the 5D for!
Carsten _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Mar 22, 2007 6:56 pm Post subject: |
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Orio wrote:
LucisPictor wrote: |
The cam I find most interesting is: http://www.digitalkamera.de/kameras/Contax/N_Digital.asp
6 MP fullframe sensor and then the lenses for Contax N und Contax 645. Wow!
But this cam was very expensive and is hard to get, and if you still have to pay a lot of money. I've seen offers you get the 5D for!
Carsten |
Not to mention the fact that the Contax N and 645 lenses are much more difficult to find than the Contax lenses, and more expensive. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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