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54,748 reputation
8107250
bio website jonrista.com
location Aurora, CO
age 35
visits member for 4 years, 5 months
seen Dec 24 at 19:25

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

May
22
comment How can an amateur print high gamut images?
Finally, papers that have a nice dMax and high L* very frequently achieve that via OBAs. OBAs can definitely improve your gamut, color reproduction, dynamic range, etc. Just beware that OBAs are uv-sensitive (they absorb UV then reflect it back at a lower energy), so they fade over time. If you want brilliant prints, especially brilliant matte prints, you SHOULD choose a paper with OBAs (Moab Lasal Photo Matte is a wonderful example), and you'll get some of the best gamut you can find. If you need "archival" longevity, then acid free natural fiber papers are usually best.
May
22
comment How can an amateur print high gamut images?
In the case of Lucia II, Lucia EX, UltraChrome HDR, etc. you definitely have wide gamuts, and often on a wider range of papers. It should be clearly noted, however, that if you use matte papers in general, and certain natural fiber luster/semigloss/gloss papers (there are a few, such as from Moab), that your gamut is likely to be quite restricted. That's due to lower reflectivity, dMax and offtone white points, all of which affect gamut. Gamut isn't everything in print, however. There are very specific reasons to choose a matte or natural fiber paper, for their specific aesthetic.
May
22
comment How can an amateur print high gamut images?
Gamut in print largely depends on which papers you are using. I know that my old PIXMA Pro 9500 II and Lucia inks can print wide gamut (around AdobeRGB size) on specific types of luster and gloss papers. Same generally goes for Epson printers with their UltraChrome inks. Wide gamut in print usually doesn't extend beyond AdobeRGB size, although some parts of the print gamut may extend outside the bounds of either sRGB or AdobeRGB in specific hues...such as purples/skintones (Epson) or greens and reds (Canon).
May
22
comment Aperture priority images are all severly underexposed
...meter correctly.) There isn't any magic going on with pixel wells or anything like that, because the sensor literally is blocked by the shutter until the shutter opens...at which point there is no longer any time to do metering, as you are ACTUALLY taking an exposure. I would also offer that bracketing your shots is only a bandaid for your problem, it is not a solution. Your BY CHANCE possibly, maybe, getting a better exposure, but you will never get the right exposure until you go full manual. Full manual is your only option here.
May
22
comment Aperture priority images are all severly underexposed
@Jon: I find it unlikely that's the case, since the sensor is not exposed to light prior to actually opening the shutter. The metering sensor, however, which is an entirely different sensor housed in the upper part of the camera where the pentaprism is, does get light, and it is responsible for determining exposure. I am quite certain my description is correct...the lens is not communicating with the camera, so the camera is assuming an aperture, and that aperture is incorrect for all but one aperture setting (i.e. if the camera assumes f/4, and you choose f/4, ONLY then would the camera...
May
22
comment Photos messed up after copying from a usb drive
Take a screenshot of the photo on your screen, and upload the screenshot. It's likely this question is a duplicate, but having an example of what your seeing will help us make that determination, and decide which existing question will answer yours.
May
22
revised How can an amateur print high gamut images?
added 751 characters in body
May
22
answered How can an amateur print high gamut images?
May
21
comment How can I make the text in this photograph of an ancient column more readable?
@Revious: Photoshop uses a pretty wide variety of algorithms, and over the years they have become quite advanced and complex. Are they neural networks? Dunno, likely not. Are neural networks REQUIRED for this kind of image processing? Again, probably not. You have to understand here, Revious, that the burden of demonstrating WHY the product you are recommending is valid and will solve the problem at hand is ON YOU. You need to make a more valid argument about why PV is the right tool for the job, the better tool for the job, than the tool most every photographer already has.
May
21
awarded  Nice Answer
May
21
awarded  Nice Answer
May
20
comment How can I make the text in this photograph of an ancient column more readable?
...that I used it to produce the results in my answer with nothing but Photoshop and all of it's filters and other tools. In order to achieve a good result, I needed to know that Photoshop used math behind the scenes, know how that math worked, so I could employ each tool or filter effectively, etc. I also have an extensive collection of third party filters and action sets that allow me to do pretty much anything with Photoshop, from advanced deconvolution and deblurring to even generating FFTs. One doesn't need specialized software when they have a tool like PS (or even Gimp.)
May
20
comment How can I make the text in this photograph of an ancient column more readable?
I'd point out that an FFT is a useful analysis tool, and analyzing images is important in quite a number of fields, including your average photography, astrophotography, etc. But FFT isn't the only "algorithm" involved in image processing. Every single filter, every single tool, that Photoshop has to offer functions because there is an algorithm, a mathematical algorithm, that makes it function. Without the math, some of which, for some filters, is quite complex, there would be no Photoshop at all! I also clearly believe that Photoshop can be a very effective tool for image analysis, given...
May
20
comment How can I make the text in this photograph of an ancient column more readable?
I think it is mistaken to assume that FFT isn't well understood in the image processing world. I am also not even sure it is safe to say that amateur and family photographers make up "most" image processors. I'd say most amateurs simply point, shoot, and share, without processing a all. Of those who DO process, I think there is quite a significant presence in the scientific, medical, industrial, and more advanced photography populations who do clearly understand what an FFT is. As for photoshop, photoshops tools are all ALGORITHMS, so I think it is quite inane to think PS is NOT mathematical!
May
20
answered Aperture priority images are all severly underexposed
May
20
answered What are the pros and cons of different lenses on the end of a long macro bellows
May
20
revised How can I make the text in this photograph of an ancient column more readable?
added 76 characters in body
May
20
comment How can I make the text in this photograph of an ancient column more readable?
+1 for the laugh. :) One thing I'd note...by painting in what you THINK the letters are, you are quite possibly reproducing them incorrectly. If the intent was to truly discover something about the text, that couldn't be seen without processing the photo, drawing in some lines with MS Paint isn't really going to reveal anything.
May
20
comment How can I improve this picture of my friend on vacation?
Thanks for the edits and improvements. I think the question is great now, so I've reopened it.
May
20
answered Exposure compensation or ISO sensitivity?