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8,377 reputation
1129
bio website sequoiagrove.dk
location Denmark
age
visits member for 2 years, 3 months
seen Dec 18 at 12:33

I work with R&D in computer vision and am an amateur photographer. I developed my own image viewer and editor, too, because I am tired of moving images around in different software and it gives me a common platform for including my own algorithms and formats used in my research.

http://500px.com/sequoiagrovevisions

My gear:

  • List item
  • Canon 40D with battery grip
  • Speedlite 430ex
  • Canon 28mm 1.8 USM, Pentax SMC M 50mm 1.4, Canon 85mm 1.8, Carl Zeiss jena 135mm 3.5, Sigma 17-50mm 2.8 EX OS HSM, Sigma 10-20 HSM, Helios 44-2 58mm F2
  • Image View Plus More (sorting, viewing, slideshows, raw developing, adjustments, retouching, all-in-one)
  • Photoshop Elements
  • Upgrade wish list: 14mm F2.8, 35mm 1.4L, Canon 400 F4, Jupiter9 85mm F2 or Samyang 85mm 1.4, Canon 70-200 F/x L. Canon 60mm Macro

2d
awarded  Curious
Dec
18
awarded  Scholar
Dec
18
accepted Will a charger for Canon 60D batteries work on 40D batteries?
Dec
18
comment Will a charger for Canon 60D batteries work on 40D batteries?
well you can record video now :)
Dec
18
asked Will a charger for Canon 60D batteries work on 40D batteries?
Dec
8
comment What are the advantages and disadvantages of using a 3rd party battery?
I have bad experience with the performance of 3rd party for canon.
Dec
7
comment How does software that extracts or views EXIF work?
This question appears to be off-topic because it is about most probably programming.
Dec
7
comment How does software that extracts or views EXIF work?
why would any research paper tell this? Research is about creating knowledge, not explain how to read known knowledge from a well defined known protocol. Just look up the protocol. Simple as that. exiv2.org/tags.html
Nov
21
comment What makes this Eggleston picture great?
I dont like it. And I can say why: the background has an imbalanced amount of clutter. (the buildings) and he didnt blur it with narrow DOF.
Nov
14
comment Aerial Camera Ground Footprint Calculation
This question appears to be off-topic because it is about computer vision
Oct
27
comment Shadowless product photography
yeah ok, I guess a theoretic point can be smaller than the sensor, I was thinking of natural point sources that are usually larger than the sensor, and so are all professional coaxial lights I know of. Still, the inital case was a photo you saw that has shadows. and it is not due to theoretic zero radius point sources, but that the light is not coaxial.
Oct
27
comment Shadowless product photography
A point source coaxial light still would not cast a shadow. The reason that you see shadows in that other image is because the splitter/mirror turns part of the light coaxial (assuming correct angle), but the direct light from it from the side is not blocked, so that side light created shadows. The reason coaxial light cannot create shadows in the image is that that anything that occludes the light , will also occlude the field of view, so the cmaera cannot see the shadows. THe shadows are there, but the image will not show them.
Oct
26
comment Shadowless product photography
thats because it is not coaxial light. it is mixed sources. Real coaxial light is contained. falcon-illumination.com/_images/structure/flfv%20(1).gif
Oct
16
comment How to photograph a lightbulb?
i like the first one best.
Oct
5
comment Was there ever a photo that made people cry?
Actually, that arbeit macht frei gave me shivers. But thats because I know all that is behind it. The pipers dont give me an emotional reaction, other than I think it is great that people keep up traditions like that, even if it looks funny. I listen to some good deaht metal bands with bagpipes, too.
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Sep
23
comment How does focal length determine lens quality?
it doesnt say anything about quality.
Sep
21
comment When should I consider an image sharp?
photo sharpness is normally disappointing viewed 100%. Which means: dont.
Sep
16
revised How do zoom, magnification, and focal length relate?
deleted 3 characters in body