Mark Scott Abeln

Mark Scott Abeln

Lives in United States Saint Louis, MO, United States
Works as a Media
Joined on Jan 1, 2008

Mark Scott Abeln's recent activity

  • Replied in Yes
    You can see other examples of this lens aberration here . Also, see this picture which exhibits the same kind of halo: http://www.pbase.com/image/154429277 So it appears as if this is normal for ...
  • Nice kitty! I suspect that is a lens aberration. That’s a Nikon lens, yes? The 85 mm f/1.8 is known to have a somewhat ‘busy’ bokeh or out-of-focus blur, especially compared to its big brother, the ...
  • Agreed. Back in the old days when I’d manage datacenters, we’d have high speed data channels that could hook together multiple computers and hard drives, all with redundant drives, data links, and ...
  • Some geometry: (1) Draw a line that is equal to the width of your camera sensor: this size is probably in your manual.
  • Take a look at these: http://www.dxomark.com/Lenses/Ratings/Optical-Metric-Scores Some have very low distortion. You get what you pay for. Also, many modern cameras have software distortion correction.
  • Flange distance has nothing to do with barrel distortion. Good optics avoids this kind of distortion, and these optics can be expensive. As far as we know, Apple is doing software distortion ...
  • Are you shooting raw or jpeg? If jpeg, what sharpness setting are you using in the camera? If raw, what sharpness settings are you using in your raw converter? Can you upload a disappointing full ...
  • I got mine on sale, so it was no more expensive than a regular external disk drive, and I use it as one of my Time Machine backups: I also back up my Windows and Linux machines to it. It is ...
  • Define classic? You might want to examine paintings for ideas. Or you might want to go back just a bit more than a century and take a look at the photos from Camera Work magazine: http://en.wikiped ...
  • I have a friend who insisted that there must be a way of viewing photos on a screen so that there is no wasted space whatsoever, no matter if a photo is viewed horizontally or vertically. He says ...
  • You are comparing an image on a screen back-lit by powerful lamps, while you are viewing the light reflected off of a print coming from a dim room light bulb. This might help: An Expensive and a ...
  • Replied in Rarely
    Thanks! That was a fun photo shoot. My assistant and I (and the other crew that was there too) ate so much pizza that we nearly burst.
  • Chesterton wrote that it is the business of conservatives to prevent mistakes from being corrected, while it is the business of liberals to keep making the same mistakes over and over. The same ...
  • Replied in Rarely
    I used burst mode for this book cover; also, I used JPEG instead of Raw so that I could capture more frames in the brief time the pizza was in the air: http://www.amazon.com/Thursday-Night-Pizza-Do ...
  • Ha! Good points!
  • Gamma correction isn’t a simple equation of raising something to a power, where doing multiplication of values before or after doesn’t change anything significant. But rather it has the form: Xout ...
  • Yes they have, and it is controversial: http://en.wikipedia.org/wiki/PenTile_matrix_family
  • I took a photo of that because I thought that it was a good composition within a circle — clearly this is rather rare, and it’s nice to see someone do a good job of it. Lately I’ve been reading ...
  • Well, when I’m taking photos on assignment, often it isn’t quite clear to me what the client wants, especially if the shooting schedule is packed. I’ll go with the photo editor’s visualization :-D ...
  • Hmmmm. I went to a local art museum and they had only a few circular paintings. Not a particularly useful format in my opinion, but I think that would make an interesting exercise in composition.
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Total messages 4498
Threads started 130
Last post 19 hours ago
Total comments 15
Total likes 1
Last post Oct 10, 2012
Total reviews 0
Entries 38
Votes cast 933
Last entry Jun 1, 2011
Photos uploaded 139
Last upload Dec 18, 2010