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2,540 reputation
1920
bio website
location Norway
age
visits member for 3 years, 7 months
seen Dec 16 at 5:14

Hobbyist photographer back in the '70s and '80s. Took my first photo when I was five years old, got an SLR when I was ten. (Film, all manual, handheld light meter, we had a darkroom in the basement.)
Shelved the hobby for a couple of decades. Returned recently, this time with digital equipment.

Jack of many trades (and master of none), but I have a professional background in software development.


Jul
1
comment Is there a program that does automatic adjustment of levels in a batch?
Both Google's Picasa and Adobe Lightroom have an 'auto' option. In Lightroom, at least, you can apply it in bulk. For some photos it works very well, for others it's just awful. Automatic good settings for every picture is not feasible, IMO, but it can save editing time for the pictures where it works.
Jul
1
comment What do I need to take photos which accurately show small differences in color?
@JamesSnell I guess it should work if you use consistent lighting. Haven't tried, so I can't really comment beyond that. But you might want one anyway to calibrate the monitor.
Jun
30
answered How to take extreme (multiple month!) long exposure photos?
Jun
30
comment How to take extreme (multiple month!) long exposure photos?
@StanRogers You're right, I was off by a couple of stops; thanks for catching it. Do you happen to know how low-sensitivity it's possible to make these plates, is there a minimum? (Agree on the reciprocity failure. Found a "simple model for t>1 second" here, I assume that's for the same development. Brings the number of stops of ND down to a reasonable range.)
Jun
29
comment How to take extreme (multiple month!) long exposure photos?
Don't know the parameters of a 4x5 camera. But assuming a flange distance of 100mm and optimal pinhole size from the wikipedia formula giving ~f/256, and ISO 25 film, I'm still only at 4 seconds exposure in EV 14 daylight. I think you would need 24 stops or so worth of ND-filters...
Jun
28
revised What do I need to take photos which accurately show small differences in color?
Generalized the answer so it's more applicable to normal photography as well.
Jun
28
comment What do I need to take photos which accurately show small differences in color?
My answer was on the assumption that you had both colors/shades in the same picture, and needed a way to tell them apart. If you are comparing across two different pictures, I'd start with mattdm's suggestion.
Jun
28
answered What do I need to take photos which accurately show small differences in color?
Jun
26
answered Are there any ways to combat “sluggish battery syndrome”?
Jun
22
revised How effective is HAMA STAR 61 tripod for shooting with Nikon DSLR?
spelling, more general conclusion
Jun
21
answered How effective is HAMA STAR 61 tripod for shooting with Nikon DSLR?
Jun
21
comment How effective is HAMA STAR 61 tripod for shooting with Nikon DSLR?
I have the Hama Star 62, see my comment to Esa Paulasto. It's better than handholding, but it takes some care and patience to keep it steady. OK with short focal lengths and a remote release. OK if you're just trying to figure out whether you want a tripod at all. But if you're planning to use it quite a bit, I'd suggest finding something more stable.
Jun
21
comment How effective is HAMA STAR 61 tripod for shooting with Nikon DSLR?
+1, since that's pretty much exactly my experience with the Hama Star 62. The legs are decent, I think, but the head is so wobbly that it's hard to focus a 300mm on the moon, and a 2 seconds delay isn't nearly enough for the shaking do die down. Still, with care, holding my breath, and a remote release, it beats handholding. Although I'll be looking for a tripod upgrade very soon.
Jun
17
comment What is the meaning of “Blue Hour” and its differences from “Golden Hour?”
There's a nice blue hour/golden hour/moonrise calculator here: jekophoto.eu/tools/twilight-calculator-blue-hour-golden-hour
Jun
12
comment Is it possible to take HDR-photos straight out of camera?
@JørnE.Angeltveit No, you can't. The second exposure adds more light on top of the first exposure, so if either of the exposures blow out the highlights, the multiexposure will be even more blown out since it gets the light from the other exposure on top. A graduated ND is not a general replacement, but it works if your picture has one bright and one dark part and a more-or-less straight line separating them. Or you could use gelatin/plastic ND filters and cut them to the shape you need. IMO multiple shots and post processing is easier.
Jun
11
comment How does autofocus work?
Agree with @mattdm: Phase detection is generally faster, but less accurate than contrast detect. At least according to the lensrentals Canon tests: Contrast detection was just as accurate as careful manual focusing. Phase detect was accurate when it hit, but way off in 10-30% of the cases. A few combinations of the latest lenses (300mm f/2.8) and latest bodies (5D Mk III, but not Mk II) were just as accurate using phase detect. In either case, contrast AF was the gold standard in accuracy.
Jun
11
answered What does “Strobist” in Photography mean?
Jun
8
comment How to protect camera and lenses against “color bombs”?
@ZsbánAmbrus I suppose I could resurrect an old compact camera. I think the "glorified plastic bag" sounds like the best option for when I want to bring my DSLR.
Jun
7
comment What devices transfer photos from one flash media to another?
@Dan At a guess: $55 for a 320GB external disk, $180 for a 320GB Wolverine, $250 for a 320GB netbook. They have a hard time competing on value since just a bit more money will give you a netbook so you can view your pictures too. What's left is a quite expensive special-purpose device with a tiny market.
Jun
7
comment Is it physically possible to build a long zoom (17-300 mm for example) at an aperture value of around 1.4 or 1.2?
Another point of reference: The broadcasting industry has some interesting lenses, like this 9.3-930mm f/1.7-4.7, it's f/1.7 all the way up to 300mm. 27kg (60 pounds) and $220,000. Unfortunately, the image circle only covers half of a Micro Four Thirds sensor.