Red and Blue

by Gordon

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8,609 reputation
1331
bio website sequoiagrove.dk
location Denmark
age
visits member for 2 years, 8 months
seen May 22 at 5:53

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

Apr
30
comment What are the pros and cons of different Bayer demosaicing algorithms?
it is those lines yes and it comes from the way the bayer algorithm tries to guess the data.
Apr
30
comment What are the pros and cons of different Bayer demosaicing algorithms?
mouse in a maze.
Mar
11
comment Can I use generic flash tubes for studio strobes?
ooh la lah. just what the doctor ordered. and tehy also ahve the modelling lamp which is also burned.
Mar
10
comment What do resolution figures mean in lens specifications?
yes that would be good, hard to do in practice. your lens is still only 166lp/mm so you have to increase your sensor to have more mm's to project on. or decrease your FOV so less linepairs has to be projected on the sensor, and then stitch. So when you cannot increase your lp/mm, you can reduce the need for a high number.
Mar
10
comment Can I use generic flash tubes for studio strobes?
it has to be inside EU.
Mar
10
comment Do photographers see ambiguity in the color of the blue/black (gold/white) dress?
Let me understand this correctly. Do you see it as a white dress, or do you see it as blue, and make conscious assumptions that it must be a bad image of a white dress that makes it seem blue? It is puzzling to me how anyone can see it as white. Its not even close. I would understand it if the it was blue and images and WBed to look white, or vice versa. but its blue and is blue in the image.
Dec
25
comment Do professionals really never use a 24-70 lens?
Those Ive seen almost exclusively use the 24-70 lens...
Dec
23
comment How can I remove shine on someone's face in Lightroom?
lightroom has cloning too
Dec
18
comment Will a charger for Canon 60D batteries work on 40D batteries?
well you can record video now :)
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
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.