Alley in Pisa, Italy

by Lars Kotthoff

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64,150 reputation
11190373
bio website mattdm.org
location Somerville, MA
age 39
visits member for 3 years, 8 months
seen 4 hours ago

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?".)


Matthew Miller


4h
reviewed Close Which camera should I buy: 7d or 70d?
11h
reviewed Reviewed Do I need an adapter to mount a Sigma lens to a Canon Rebel Ti3?
11h
awarded  Enlightened
13h
awarded  Nice Answer
13h
comment How do disposable cameras work without exposure and focus control?
@coneslayer You're probably right. In this digital age it all gets lumped together. :)
13h
revised How do disposable cameras work without exposure and focus control?
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comment If I'm using only one focus point, am I doing it wrong?
On Ken Rockwell and entertainment vs. facts, see photo.stackexchange.com/questions/10980/…
16h
revised Setup for macro photos of flat surface with macro lens and led ring
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16h
revised How do disposable cameras work without exposure and focus control?
edited tags
16h
revised Does the wide-angle diffuser on a flash help reduce hotspots when used in a small softbox?
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16h
revised How can I resize more than 2GB of travel photography with no quality compromise?
added 195 characters in body
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awarded  Nice Answer
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reviewed Approve suggested edit on How can I copy all metadata, including color profiles, from one jpg to another?
20h
reviewed Reviewed Can you remove scratches from a lens with peanut butter?
20h
comment Can you remove scratches from a lens with peanut butter?
How does this relate to scratches?
21h
comment Why are Micro Four Thirds lenses so expensive compared to Canon?
@Jahaziel Neither Canon nor Olympus label lenses for their interchangeable lens systems in this way — they both use the real focal lengths. But do consider that these cameras have different aspect ratios, (see this question), with Canon using 3:2 and the 4/3rds sensor being, not surprisingly, 4:3. That means that along the short dimension, there's only about a 10% difference.
22h
revised Most effective directed speedlight diffusers?
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22h
comment Why are Micro Four Thirds lenses so expensive compared to Canon?
Sorry to keep nitpicking :)
22h
comment Why are Micro Four Thirds lenses so expensive compared to Canon?
+1, although note that neither Sony NEX nor Fujifilm X offer a cheap 50mm — the closest I think would be Sony SEL 50mm f/1.8 at around AU$250 and, I guess, Fujifilm XF 60mm f/2.4 at AU$700.
22h
revised Why are Micro Four Thirds lenses so expensive compared to Canon?
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