I Dare You!

by peter_budo

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

55,778 reputation
8112258
bio website jonrista.com
location Aurora, CO
age 35
visits member for 4 years, 8 months
seen yesterday

I am a relatively new photographer, having been at if for only a few years. I chose Canon gear when I finally took the plunge into DSLR. I am an avid hobbyist now, and love everything about photography, from the gear, to the science, to the art. I spent years reading about the technology and photography theory, so I am very well versed in the technical aspects of photography. My artistic skills are moderate, but improving. You can see my work @ the following sites:

My interests lie primarily in nature photography:

  • Birds
    • Songbird Setups
    • Shore Birds & Waders
    • Raptors
    • All others
  • Astrophotography
    • Moon
    • Wide Field
    • Deep Sky
  • Landscapes
  • Wildlife
  • Floral Macro
  • Insect Macro
  • Abstract

I currently use the following gear:

  • Cameras
    • Canon EOS 7D
    • Canon EOS 450D (Rebel XSi)
  • Lenses
    • EF 16-35 f/2.8 USM L Wide
    • EF 50mm f/1.4 USM
    • EF 100mm f/2.8 USM Macro
    • EF 100-400mm f/3.5-5.6 IS USM L Zoom
    • EF 600mm f/4 L IS II
    • Canon EF 1.4x TC III
    • Kenko 1.4x Teleplus Pro 300 DGX
    • Periodic Rentals:
      • EF 300mm f/2.8 L IS II
      • EF 500mm f/4 L IS II
      • Canon EF 2x TC III
  • Filters
    • Lee Foundation Kit (x2) + Tandem Adapter
    • Lee .3/.6 ND
    • Lee .3/.6/.9 Soft Grad ND
    • Lee .3/.6/.9 Hard Grad ND
    • Lee CPL
  • Tripod
    • Gitzo Systematic GT3532LS 3S. Series 3 Tripod
    • Jobu Pro 2 Gimbal
    • Gitzo Mountaineer GT0541 4S. Series.0 Tripod
    • Gitzo GH1780QR Series.1 Mag. Center Ball Head

Mar
6
comment How can I colorize my astrophotography?
When you say it only captures black and white images...is that because the sensor is monochrome? Or is it just that things appear black and white when you stack? Some integration tools like DSS will automatically align channels for you, which can make your images look grayscale, when they are really not. If your using a standard DSLR, you images may indeed have color. If you are using a mono CCD, you could always get a filter wheel and use LRGB filters in sequence, and combine the channels in photoshop to produce color images.
Feb
21
comment What is the native color gamut of a modern digital sensor?
Well, Colorimetric Quality Factor or Gamut, whatever you choose to call it, the sensor and readout system of a camera DOES limit the range and discernment of colors within each camera. All cameras are not the same, some have considerably greater color and tonal discernment, others have less. There are many factors that play into this...native silicon response, color filter strength, etc. Render data from many cameras with the same algorithm, and these differences in hardware affect the rendering results.
Feb
21
comment What is the native color gamut of a modern digital sensor?
Gamut is more than coordinates on a two dimensional diagram. Gamut is the full three dimensional extent of color, it's saturation, and it's intensity. You would first need to measure...take photos of a proper test chart with sufficiently saturated and desaturated colors, of sufficiently varying degrees of intensity, and generate a full profile of the camera's gamut. That gamut could then be compared to other gamuts, or even full color spaces such as Lab*, to determine how effective it is at sensing and replicating color.
Feb
20
comment What is the native color gamut of a modern digital sensor?
I wasn't addressing the gamut maps, I was responding to this: "The raw values are not colors per se and the concept of gamut is not working well with raw output of digital cameras." I disagree that the concept of a gamut does not work well with digital cameras. The gamut of a digital camera would be bound by the sensor's color response and noise levels. Each image would then be limited in gamut (color extent) by that response.
Feb
20
comment What is the native color gamut of a modern digital sensor?
Gamut in a digital camera would be the color space supported by the camera sensor's response to light with respect to it's noise levels. Gamut is effectively the SPACE within which colors can be modeled. Newer cameras, particularly those with sensors using more modern manufacturing techniques and with much lower noise (Sony Exmor, Samsung's NX1 sensor) are going to support a much broader range of color than older sensor designs that still suffer from high noise, such as Canon sensors. To really measure a camera's color response, you need to test it with extreme colors.
Feb
19
comment What's the maximum length of USB cable that you can use for tethering?
I think the answer is ok, albeit rather light. I think some explanation about why such a cable is required. I would also note that with active booster cables, a powered hub on the far end (device end) is usually necessary for optimal performance and reliability
Feb
15
awarded  Enlightened
Feb
15
awarded  Nice Answer
Feb
11
awarded  Revival
Feb
6
comment What is the difference between Canvera and Karizma wedding albums?
I agree with Bart, I see the question as asking about relative qualities. Hopefully someone who has used both can offer the necessary comparison. If not, maybe Subhajit could follow dpollitt's suggestion, then return and answer his own question for the future benefit of others. ;)
Jan
31
awarded  Nice Answer
Jan
24
awarded  Nice Answer
Jan
15
awarded  Nice Answer
Jan
12
awarded  photoshop
Jan
11
comment Lightroom/ACR Histogram Shape
Reference: photo.stackexchange.com/a/452/124
Jan
11
answered Which galaxies can we photograph with a DSLR and a telephoto lens?
Jan
11
answered How to brighten stars in Photoshop?
Jan
11
comment Methods for dithering a DSLR
Dithering is currently a software thing, not a mount thing. The mount is controlled by whatever is doing the dithering (most often a guiding program). So I don't think there is a hardware solution for you. I have provided an answer that covers dithering, what it is, how it's down, the consequences of not using it (with DSLR anyway), and what software can do it.
Jan
11
revised Methods for dithering a DSLR
Segmented answer, for easier bite-sized reading
Jan
11
answered Methods for dithering a DSLR