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mattdm

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48,516 reputation
7143297
bio website mattdm.org
location Somerville, MA
age 38
visits member for 2 years, 7 months
seen 6 hours ago
stats profile views 3,481

I work for Red Hat on the Fedora Linux distribution. Before that, I was a sysadmin in the Academic Computing group at Harvard School of Engineering and Applied Sciences. Photography is a hobby, and my main goal is simply documentation of my family life.

If you're a Pentax user, you may be interested in my definitive guide to Pentax hot shoe flashes and compatible 3rd-party options.

The Exposure Tricycle

(Huh, what? See What is the "Exposure Triangle?".)


684 Answers

newest activity votes
20
Which prime lens for Pentax?
jun 29 '11 at 15:04
20
How can I resize more than 2GB of travel photography with no quality compromise?
jun 4 '12 at 12:32
19
What is a zone plate?
may 3 '11 at 13:40
19
Are color and tones in this seascape fine?
jun 4 '12 at 16:31
19
When is it OK to place the subject in the middle of a picture?
oct 26 '11 at 18:02
18
How come a 1" sensor is 13.2 x 8.8 mm big?
jul 5 '12 at 12:03
18
What is an auto-focus motor?
feb 16 '12 at 20:57
18
Does my crop sensor camera actually turn my lenses into a longer focal length?
apr 27 '11 at 11:56
18
What causes lens flare?
feb 25 '11 at 16:47
18
What makes a Carl Zeiss lens so special in a smartphone?
nov 9 '10 at 21:54
18
Best fluorescent bulb color temperature for shooting people and interviews?
mar 30 '11 at 17:14
17
How to stop a high F number from appearing blurry?
jan 9 at 18:03
17
How can I justify a new camera purchase when I'm not a top photographer?
nov 5 at 13:26
17
What is the device held near the subject's face in this picture?
jul 24 at 2:05
17
Why do compact digital cameras not have the aperture range of DSLRs?
feb 25 '11 at 2:08
17
Will I lose image quality by adjusting white balance in post processing?
dec 14 '11 at 1:58
17
Is there a standard tripod mount?
dec 8 '11 at 0:09
17
How to attribute Flickr Creative Commons photos online?
jan 12 '11 at 14:20
17
What's the best way to scan in hundreds of pictures?
nov 27 '10 at 0:50
16
How was the Blade Runner replicant eye reflection effect done?
may 6 at 15:48
16
Do digital cameras lose picture quality over time?
nov 30 '11 at 2:41
16
What does 'how much zoom' mean?
mar 6 '11 at 15:57
16
Prime lens or flash: which upgrade will most improve baby photos?
dec 31 '10 at 20:40
16
How do I combine multiple exposures for action shots?
may 23 '11 at 17:06
16
Is there a difference in the sensor technology in entry level cameras vs. that in pro or semi-pro DSLRs?
feb 21 '11 at 7:38
16
Can anyone recommend a good open-source photo management platforms for power users?
dec 1 '10 at 2:07
15
Technically, why is the out of focus area blurred more when using a bigger aperture?
jun 25 '11 at 12:52
15
Why do my photos look like they're painted?
jul 31 at 3:27
15
What are the first few steps a beginner should take in post processing?
feb 1 '11 at 4:32
15
How do I interpret individual colors on RGB histogram?
apr 4 '12 at 17:02
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