rf-design

rf-design

Lives in Germany Germany
Joined on May 30, 2011

rf-design's recent activity

  • For the time now that is right. Faststone show only the embeded jpg. A better reengineering of the X3F processing open the way for SPP equivalent quality processing outside of SPP.
  • By error measurement over a colorchart for defined temperature.
  • I do not know how the colum ADC is organized but it seems a defunctional colum mux before the ADC. So you can see possible two pixel source followers shorted through the non-functional mux ...
  • I take a look at the lens review here: http://www.lenstip.com/366.4-Lens_review-Sigma_C_17-70_mm_f_2.8-4.0_DC_Macro_OS_HSM_Image_resolution.html They compare the new "C" lens to the version before ...
  • Lenses for different sensor size does not relate to the dificulty of making a wide angle lens sharp to corners. You can imagine that a geometric similar lens for 4/3, APS-C or FF have the same ...
  • I got a similar impression if I compare the Sigma 2.8-4.0/17-70mm DC OS HSM on SD1M with Sigma 2.8/19mm on NEX6 Beside that the 19mm is on Bayer sensor it is obvious that the 17-70mm is not equal ...
  • Thanks for the info. I thought I could make a try with the 4.2.174 or so version on a older real XP machine but that seems to be useless. Did you execute the RT built on Win-7 64bit? I follow the ...
  • I thought also about some kind of trick for the very dark >800nm filters. There are some "Filtermatic" lenses produced by Sigma which have a filter revolver. The revolver have 4-5 different filters ...
  • For Sigma only tripod use. Handheld is not possible because the filter is in front of the lens and for framing you do not see enough trough the finder and the AF possible do not work. To maximize ...
  • I was in the same situation some years ago and use a 30D as a complement for the SD14. Later I substitute the 30D because of the live view focusing with a 40D. Now some years later I use in ...
  • I believe this is a misunderstanding. I did not found much comparison 4 DSLRs - 4 Sensors - 3 Brands with the same lens If I use a lens which I ahve only for one type of cam I could not make a ...
  • On my machine a SD1M raw with full size embedded take on FastStone between 5s and 6s. I do not use a tool to measure the response. In thumbnail view the embedded jpg is shown and it take less than ...
  • No, I do not see the most obvious problem! Please give me a hint. 40D & A57 with RT4.0, zero noise reduction, zero sharpening SD15 & SD1M SPP5.5 with lowest setting for both but these do not lead ...
  • Added 1 photo to their gallery
    brick_all_400percent
  • The point is where to set the threshold to avoid resampling. Also the framing is important. I did not match them. There are visible differencies. Then I do not use the same lens, only the same ...
  • Added 2 photos to their gallery
    screenshot_ufraw0.19_spp5.5screenshot_a57_ufraw0.19_sd1m_spp5.5
  • I tested today also with UFRaw and found that the look of the noise reduction strongly depend on the actual noise reduction. With UFRaw X3F w/o noise reduction noise look like good film grain. In ...
  • Created discussions Fastpictureviewer
    I compare Fastpictureviewer 1.9 with Faststone 5.3. Both could read all Sigmas which I have (SD14/15/1M). Faststone is based on a newer DCRaw but I do not know the exact version. The issue is that ...
  • Added 1 photo to their gallery
    screenshot_fastpictureviewer
  • For me state-of-the-art APS-C is the SD1M. Only for the shortcomings I use other cams. Video, fast buffer, focus peaking and so on. The 2-2.5x price difference for the body is less for a hole ...
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Total messages 160
Threads started 26
Last post 1 month ago
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Last post 3 months ago
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Photos uploaded 81
Last upload 2 months ago