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

  • $200/day x 5 days/week x 50 weeks/year = $50,000/year. That’s not bad at all.
  • From what I understand, these sensors are intended for cameras that have fixed lenses. -- http://therefractedlight.blogspot.com
  • Astrophotography is highly technical and challenging. To get good results, you might need to learn a lot about the subject, get specialized gear (maybe), and lots of practice, as well as being ...
  • I remember that debate, it got really bitter, although we see that sort of thing every day here on dpreview. It’s just that such debates in the past seem to have far more portent. I have a lot of ...
  • ISO is simply a tag in the raw file, right? Nope. Probably in the same thread as that posting where I calculated the coefficient. Or maybe another thread from about the same time.
  • I generally don’t charge much for shooting, but will charge considerably for each individual image. This way, I can edit the photos extensively, and at my own time, and give the client just what ...
  • When you are shooting in raw, there is no color space. If you have the camera set to Adobe RGB or sRGB, the embedded JPEG in the raw file will be in that space, but this color space setting will ...
  • Yes, there is lots of overlap with digital audio, and I’ve learned some goods stuff by perusing high-end audio recording sites. With photography, Expose-to-the-Right (ETTR) methodology is good for ...
  • Right, I assume that Sigmas are so different that DxO’s methodology won’t work for them. You’d have to dig in the archives of this forum for that. Once I calculated the full matrix conversion for ...
  • I’d suggest that you stand back from your subject, and get a higher camera location. Correcting perspective in your existing photos won’t be particularly convincing.
  • Replied in JPEG to TIFF
    One advantage of TIFF is that you can use 16 bit data instead of the 8 bits in JPEG, and so you can do severe edits on your images if you first convert your JPEG to 16 bits, and you can save your ...
  • Yeah that’s the way things go. My Nikons have problems with rendering colors, especially blues and purples. If you go to DxOMark.com , and look at a camera’s test page, click on ‘Measurements’ and ...
  • It kind of makes sense that when you have a really high resolution sensor that the differences between center and corner sharpness will be more visible. Imagine if you have a really old 1 or 2 MP ...
  • When I was a kid, at the camera club, all of the older guys used medium format. Now most of them were pretty big, and usually former military. Only the scrawny kids like me used 35 mm. ' However, ...
  • Replied in So…
    I’ve heard that there is software that will eliminate the effect of focus breathing in post processing, but I know little about this. Also, many recommend using a focus rail when doing macro ...
  • Replied in So…
    …you want to change the focus in such a manner that size of the object in your image does not change? The change of focal length of a lens with changing focus is called ‘focus breathing’.
  • The fires were thousands of miles away. I suspect the smoke was very high altitude. I don’t recall smelling anything.
  • Well, that does depend. Some cameras, especially older ones, might have an analog-to-digital (A-to-D) converter which isn’t able to differentiate between the lowest voltage numbers possible, ...
  • You can use your Mac’s own built-in calibration tool: System Preferences, Displays, Color, Calibrate… Just be sure that you are extremely careful and deliberate when using this, otherwise you’ll ...
  • You just missed the Spyder upgrade offer, 30% off plus a free accessory. Your risk is that sometime in the future your software will no longer work after an operating system upgrade. Also, as ...
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Total messages 5140
Threads started 138
Last post 10 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 141
Last upload Dec 18, 2010