Serene Life

by garik

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8,325 reputation
1127
bio website sequoiagrove.dk
location Denmark
age
visits member for 2 years, 1 month
seen 17 hours ago

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

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
Sep
16
answered How do zoom, magnification, and focal length relate?
Sep
16
revised How do zoom, magnification, and focal length relate?
author was in a rush
Sep
16
comment How do zoom, magnification, and focal length relate?
you should add that the X:Y specs is given at minimum focus distance. Go away farther and you wont achieve it.
Sep
16
comment I tried to use the “Sunny 16 rule” but it didn't work, why?
The first is better. just need to fiddle with the dynamic range in the raw file. .
Sep
4
awarded  Yearling
Sep
1
answered Query about gamma correction?
Aug
28
awarded  Necromancer
Aug
11
comment Too much “Grain” in photos
it says 200-2000 iso
Jul
31
awarded  Notable Question
Jul
18
comment How can I get perfect sharpness when shooting still art?
adjustments to you list: try F 5.6-F8, and use mirror lockup, delayed shot (timed). since nothing is moving stick to iso 100. You are shooting raw right? Your images are kinda low contrast. increasing contrast also aids the perception of sharpness.
Jul
11
answered Which ND filter should I get for daytime bokeh-effect on video?
Jul
8
comment Which of these lenses will work?
why do you think I think the difference is sensor size? ofc it is distance, duh. thats why min focus distance is important to minimize to achieve 1:1. total magnification? when talking about 1:1 ( or more) macro lenses, everything that goes on after projection through the lens is irrelevant. Magnification by the lens increase quality, magnification after sampling decrease quality (ie dec. resolution, e.g. printing the same image at 300 DPI or 150 DPI). You cant pool those two magnification techniques into one "total mag.". Projecting larger is really the best way to gain IQ.
Jul
7
comment Which of these lenses will work?
the trends Ive seen emerge is (dont know enough optics theory to state this IS the truth): the optics has a tendency to blur before you get to record anything if its not 1:1 squeezing the light is hard. in the link above notice how significantly sharper it gets at 1:1 vs 1:2 and 2:3. thats not the higher pixel count per inch alone that makes this sudden focus. thats also why the same lens performs better on FF than crop even if the crop has same/more pixels.