Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,928   Posts: 1,585,199   Online: 771
      
Page 5 of 6 FirstFirst 123456 LastLast
Results 41 to 50 of 57
  1. #41
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40

    Medium format Petzval lens for Hasselblad 2000 or 200 models

    This is an update to my post about the Kickstarter project, aimed to create medium format Petzval lens.
    I have completed building of prototype Petzvar lens with Hasselblad V mount, that will be compatible to Hasselblad 2000 or 200 camera with focal plane shutter.
    Here is the link to Kickstarter page, there are more details and images there:

    http://www.kickstarter.com/projects/...t-petzval-port

  2. #42
    AgX
    AgX is offline

    Join Date
    Apr 2007
    Location
    Germany
    Shooter
    Multi Format
    Posts
    9,087
    You should make it clearer at your website that your lens has a a variable aperture (at least I assume so...)

    The only hints are two photographs of the lens showing a row of unsharp figures at the front of the barrel, several figures at the focusing mark and the term "max. aperture".

  3. #43
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40
    Quote Originally Posted by AgX View Post
    You should make it clearer at your website that your lens has a a variable aperture (at least I assume so...)

    The only hints are two photographs of the lens showing a row of unsharp figures at the front of the barrel, several figures at the focusing mark and the term "max. aperture".
    Yes, you are right! The lens has a variable iris aperture. I will add f/16 to technical details. It is my Nikkor's 1.4 fault ) It has such a shallow DOF at close up distance even at f/8.
    Thank you for pointing at that.
    Last edited by Denys; 12-12-2013 at 04:31 PM. Click to view previous post history.

  4. #44
    3RiC's Avatar
    Join Date
    Aug 2009
    Location
    Melbourne
    Shooter
    35mm
    Posts
    42
    unlike the Lomo's version they are still using the waterhouse aperture system.

    Hope to see your project materialise !

  5. #45
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40
    Here is an image of the lens with the front lens block removed.

    Click image for larger version. 

Name:	_iris Petzvar.jpg 
Views:	51 
Size:	106.2 KB 
ID:	78387

  6. #46
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40
    Quote Originally Posted by 3RiC View Post
    unlike the Lomo's version they are still using the waterhouse aperture system.

    Hope to see your project materialise !
    They are making a toys, pretty expensive, though, but eye-catching.
    I'm building a real lens. It is not for everyday use, like a fish-eye etc. But it is a proper lens.
    Last edited by Denys; 12-12-2013 at 08:17 PM. Click to view previous post history.

  7. #47
    3RiC's Avatar
    Join Date
    Aug 2009
    Location
    Melbourne
    Shooter
    35mm
    Posts
    42
    Hi Denys,

    Any updateds with this project ?

  8. #48
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40
    Quote Originally Posted by 3RiC View Post
    Hi Denys,

    Any updateds with this project ?
    Eric, the project have reached 50% of funding goal, yet still needs another 11,500$ in order to be funded. Thanks to all of my backers and supporters, the project getting attention of media.
    It is only 8 days left and the future of this lens is depending on further support of fellow photographers.

  9. #49
    segedi's Avatar
    Join Date
    May 2010
    Location
    Calgary, Alberta, Canada
    Shooter
    Multi Format
    Posts
    345
    Images
    2
    Just put in my support!
    -----------------------

    Segedi.com

  10. #50
    Denys's Avatar
    Join Date
    Jan 2010
    Location
    USA
    Shooter
    Medium Format
    Posts
    40
    Quote Originally Posted by segedi View Post
    Just put in my support!
    Kevin,
    thank you very much!

Page 5 of 6 FirstFirst 123456 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin