Pages: 1 ... 3 4 [5]   Go Down

Author Topic: Comparisons From DT's 250 and 260 testing in the Library  (Read 10875 times)

torger

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 2788
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #80 on: February 18, 2014, 12:36:45 PM »

Tried both files in rawtherapee, there I can't see a small difference but not that kind of difference in aliasing. Color aliasing artifacts depend a lot on demosaicer. It also depends a lot on the exact positioning of the pixels in relation to the object.

My theory is that there's a very slight difference in offset where the "pixel grid" comes over the bars, and the IQ280 just got unlucky and got in a worse position than the IQ250, and this got enlarged by the demosaicer.

So I don't think the IQ280 is any worse in this regard. I haven't analyzed it in detail though.
Logged

ErikKaffehr

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 9480
    • Echophoto
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #81 on: February 18, 2014, 12:56:51 PM »

Hi,

I think fill factor and microlenses may also pay a major role. Increasing the fill factor reduces aliasing.

Best regards
Erik


Tried both files in rawtherapee, there I can't see a small difference but not that kind of difference in aliasing. Color aliasing artifacts depend a lot on demosaicer. It also depends a lot on the exact positioning of the pixels in relation to the object.

My theory is that there's a very slight difference in offset where the "pixel grid" comes over the bars, and the IQ280 just got unlucky and got in a worse position than the IQ250, and this got enlarged by the demosaicer.

So I don't think the IQ280 is any worse in this regard. I haven't analyzed it in detail though.

torger

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 2788
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #82 on: February 18, 2014, 05:14:38 PM »

I think fill factor and microlenses may also pay a major role. Increasing the fill factor reduces aliasing.

Good point, it could be it.
Logged

thekeko

  • Newbie
  • *
  • Offline Offline
  • Posts: 30
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #83 on: February 26, 2014, 06:49:17 AM »

OK I order last week  ;D
Logged

Paul2660

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 2771
    • Photos of Arkansas
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #84 on: February 26, 2014, 01:11:56 PM »

thekeko,   Did you order the 250 or 260, either way, please pass on your thoughts after you receive it.

Thanks
Paul C.
Logged
Paul Caldwell
Little Rock, Arkansas U.S.
Photography > http://photosofarkansas.com
Blog> http://paulcaldwellphotography.com

jduncan

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 382
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #85 on: February 26, 2014, 01:26:29 PM »

OK I order last week  ;D

Hi,

If you order the IQ250 please test skin tones. If you can include an african american model too will be great.
Even so any information of using the camera with people will be great.
Thanks,

J. duncan
Logged
english is not my first language, an I know is shows

thekeko

  • Newbie
  • *
  • Offline Offline
  • Posts: 30
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #86 on: February 27, 2014, 08:13:31 AM »

I order IQ 250H will receive it mid april
Logged

Ken R

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 817
    • http://
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #87 on: February 27, 2014, 12:07:24 PM »

I order IQ 250H will receive it mid april

Sweeet!
Logged

MrSmith

  • Guest
Re: Comparisons From DT's 250 and 260 testing in the Library
« Reply #88 on: March 03, 2014, 01:22:05 PM »

so pricing has been announced for the Hblad 50c and it's going to be the same as the ordinary H5D-50 at $28790
Logged
Pages: 1 ... 3 4 [5]   Go Up