Mark Ransom

Mark Ransom

Lives in United States Minneapolis area, MN, United States
Joined on Feb 13, 2003
About me:

Pentax was kind enough to let me win a K-7 camera as a door prize. I try not to let that color my opinion of them; I've been a Pentax supporter long before that, but I'm not a fanboy.

Mark Ransom's recent activity

  • This one is from our garden, a Stargazer Lily.  Such an explosion of blooms and color!
  • You need to make the best of the opportunities when they present themselves. Since you invited C&C, I'll toss out a small suggestion.  A little application of curves makes the houses more of a ...
  • Why?  If there's nothing left to be said, it will die on its own. There's nothing wrong with a good conversation, as long as it's on topic and doesn't lead to fights.
  • Nice shots Ron, all of them. I'm very jealous! I haven't seen a single hummingbird at my feeder this year, and the level of liquid has remained constant so I don't think I've just missed them. The ...
  • The camera already does something similar to what you suggest - if it detects movement in an area of the image, it uses the first frame for that area instead of combining all 4 shots. The detection ...
  • Here are a few wildflowers from yesterday. Wild Rose
  • There aren't any green shots. Each of the 4 shots takes all 3 colors, just from a different position. The reason they need 4 shots is because only 1/4 of the pixels are red and 1/4 are blue. ...
  • For this kind of shift to occur, there would have to be a large number of people unhappy with the status quo. I just don't see it. The Bayer filter is a compromise, but it's a very good one that ...
  • I have to agree, it looks a bit overdone. How about this one? Processed in Paint Shop Pro, I used Curves to bring up the shadows then Clarify to add back the lost contrast.
  • Replied in Example
    I suppose it's possible to look at it that way. Exposure is determined by the interrelation of 3 things - ISO, shutter speed, and F-stop. But since Pentax chooses not to multiply the shutter speed ...
  • Yes, it increases spatial resolution. A Bayer filtered image uses interpolation to fill in the holes in each color plane, resulting in less resolution than the pixel dimensions imply. By skipping ...
  • You're not combining the pictures the way you would if you were stacking them, you're intertwining the pixels from all 4 independently. It's like you're getting a picture at the same ISO but 4 ...
  • Question: how do you get the buffer raw data without reading it from the SD card?
  • The K-3 histogram almost looks like it was clipped on the left - but if it was, I'd expect to see a large spike at or near zero, and there isn't one.
  • If that's what's in the file, then what do you suggest doing?  Compressing the range enough to put them on the same scale would lose the detail that explains the point.  I find it interesting that ...
  • You can post here too, either directly in a post or in a gallery (which you can then copy to the post).  I prefer keeping the images on this site since you know they'll be permanent as long as the ...
  • Please do!  Enjoy the new camera.
  • Ron, the mountains in the background really increase the drama of this image. But since they're much more muted, they don't detract from the focus. Very well done.
  • What you say is true, with a big but... The rest of the system must be well beyond the capabilities of the weak link before you stop seeing improvements. If your lens and sensor are about equal in ...
  • No, gaps will be evenly distributed if the response is linear. If it only takes 1023 photons for a reading of 16383, what reading should 1022 photons generate?
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Photos uploaded 185
Last upload Jul 12, 2011