Thread: URSA Mini EF 4K Resolution question

Results 1 to 6 of 6
  1. #1 URSA Mini EF 4K Resolution question 
    Junior Member
    Join Date
    Jun 2016
    Location
    Wohlen, Aargau, Switzerland
    Posts
    2
    Although I don't have the money, I am very interested in the URSA 4K EF camera from Blackmagic. But I am wondering about the specs: Everywhere it says the maximum resolution is 4000 x 2160 Pixels. Is this true? No 4096 x 2160 mode? Is it something very odd about the Blackmagic 4K cameras?

    And I have got another one: The DNG mode offers 3:1 compression, is this compression lossless?

    Very interesting cameras, even though the reviews on BHPhotoVideo don't look good.
    Reply With Quote  
     

  2. #2  
    Senior Member
    Join Date
    Sep 2013
    Location
    Long Island
    Posts
    1,371
    It is 4000 and I'm not sure about the RAW compression, but take the B&H reviews lightly. Search this forum for better feedback and experience. For the price, it's an excellent value.
    Reply With Quote  
     

  3. #3  
    Senior Member rick.lang's Avatar
    Join Date
    Apr 2012
    Location
    Victoria BC Canada
    Posts
    3,700
    Pascal, raw is lossless, and raw 3:1 is lossy, but it's referred to as 'visually lossless' because for most people and purposes, you can see any significant difference. There can be a difference side by side or pulling a 'difference' effect, but in normal use most everyone shooting raw is very impressed with raw 3:1 and worth the savings in media storage, hence increased recording duration. I have shot with raw 4:1 and was happy with the results. That's as extreme as BMD will go as they always want to stay 'visually lossless.'
    Reply With Quote  
     

  4. #4  
    Junior Member
    Join Date
    Jun 2016
    Location
    Wohlen, Aargau, Switzerland
    Posts
    2
    Thanks for the answers. The 4000 Pixels are a bummer, as my screen has 4096...Well, still the best deal out there if you want lossless video.

    About the raw compression: This could be lossless, as a Zip-file has to be lossless.
    Reply With Quote  
     

  5. #5  
    Senior Member
    Join Date
    Sep 2012
    Posts
    1,558
    Uncompressed raw is compressed, 1.5:1ish and mathematically lossless like a zip file. 3:1 and 4:1 are not.
    Reply With Quote  
     

  6. #6  
    Senior Member AndyGandy's Avatar
    Join Date
    Oct 2014
    Location
    Russian Federation
    Posts
    260
    You just get the tiny tiny black strips from the lef and the right sides of the screen. About 50 pixels wide. You can spot the lossy compression by grading your picture by the hard way. I think nobody can spot it but I like to peep pixels.
    Andrew Bell
    Blackmagic Production 4K Camera
    https://www.youtube.com/user/reklama4demo
    Reply With Quote  
     

Similar Threads

  1. Ursa Mini 4.6k resolution question
    By david evans in forum General Discussion
    Replies: 23
    Last Post: 07-09-2016, 08:15 PM
  2. Ursa Mini 4.6k Audio question
    By ChrisL in forum General Discussion
    Replies: 6
    Last Post: 05-19-2016, 02:55 PM
  3. Question : Ursa mini shoulder kit
    By FUEGO in forum General Discussion
    Replies: 11
    Last Post: 04-26-2016, 11:56 PM
  4. quick question about lens mounts for ursa mini
    By Rip in forum General Discussion
    Replies: 14
    Last Post: 03-05-2016, 08:45 PM
  5. URSA Mini Shoulder Mount Kit Question
    By claytonarnall in forum General Discussion
    Replies: 2
    Last Post: 05-23-2015, 05:38 PM
Tags for this Thread

View Tag Cloud

Bookmarks
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
  •