Lightnings taking a ride

by ceinmart

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56,980 reputation
8117263
bio website jonrista.com
location Aurora, CO
age 35
visits member for 5 years, 1 month
seen Aug 28 at 1:58

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

Oct
22
comment What does “expanded ISO” mean?
Oh, regarding SNR. I think the thought I had yesterday was, if I get ISO 50 in a camera, I wouldn't like it to just be like ISO 100, and have ISO 100 perform more like ISO 200 from a noise perspective. If I had a native ISO 50 in a camera, I would at the very least want my ISO 100 ISO 200, etc. to keep performing just as well as it does today from an SNR perspective, with ISO 50 performing better.
Oct
22
comment What does “expanded ISO” mean?
Well, first, you need to explain why your hypothetical Sensor B overexposes by a stop. That isn't just going to randomly happen, that is something that is specifically designed, and made possible by the circuitry, microlensing, layering, etc. in the sensor. I guess my point is, right now, to get ISO 50, the camera overexposes the image at ISO100, then digitally underexposes it to achieve a correct ISO50 result. (i.e. Pull-Processes it like you would an ISO 100 film to get ISO 50 performance). I'd love a "true" ISO50. Not sure what I was thinking yesterday about SNR...the thought is gone now.
Oct
22
answered What Pentax macro lens do you recommend for outdoor activities?
Oct
22
revised What are the differences between Epson v330/300 and Epson v500 scanners?
added 2358 characters in body
Oct
22
comment What should I do when I get “Lens Error Restart Camera”?
Can you provide some additional information? What kinds of things were you doing when the error appeared? Does restarting fix it/not fix it? What have you tried to do to fix it so far? The more information you provide us, the better equipped we can be to help. :)
Oct
22
answered Is there a film scanner that can read the data from APS films and include it in the EXIF metadata?
Oct
22
awarded  Fanatic
Oct
22
revised Getting ready to buy an entry-level Canon dSLR — should I skip the kit lens?
Fixed 70-400 to 70-200, as Canon does not have a 70-400 (they do have a 100-400 though).
Oct
22
comment Where can I find comparisons for linear polarizers (for a cheap variable ND filter)?
From what I've read (I've never experienced this myself), beam-splitting meters/AF sensors may be susceptible to total blackout if the polarizer is oriented 90 degrees to their own polarization, effectively eliminating the possibility of metering. I gather that AF sensors are not susceptible to total blackout, but AF speed can definitely be affected by a LPL. It would really boil down to how the meter works. If it does not use any polarizing filters, then it would probably be fine, but if it does, there is always the chance of blackout if you align your LPL 90 degrees to the meter filters.
Oct
22
comment What does “expanded ISO” mean?
Regarding base ISO, I think that has more to do with signal-to-noise ratio than than anything else. Lowering the noise floor should allow you to lower your minimum ISO as well. The idea with a lower ISO is not higher efficiency, really. As a landscape photographer, there are many cases where I would rather have a slower (less efficient?) sensor capable of capturing richly saturated photos at high dynamic range that smooth out water and clouds, than a high speed sensor. Kind of like using Velvia 50 film instead of Provia 100 film in a large format.
Oct
22
comment What does “expanded ISO” mean?
I guess it (almost) goes without saying that I would prefer sensor manufacturers work on improving minimum analog ISO while NOT continuing to increase resolution. Sensors have gotten pretty dense, and while more resolution can be nice, its really not the most important thing. I think many professional photographers would gladly stick with their current sensor resolution and have better ISO range and performance, wider dynamic range, better saturation, etc. The endless march towards higher resolution sensors without significant improvements in these other areas is rather disappointing.
Oct
22
comment What is the most appropriate camera for hobby photography?
Can't really say that there is a "best" camera for anything. It might be good to reword your title to remove "best" and use a better term, such as "What are the most appropriate cameras for...", and mitigate the subjectivity a bit. This thread should really be a community wiki as well, as there are not really any "correct" answers here, just varying opinions. Barring significant objection, I'll convert this to CW in a few hours.
Oct
22
comment What is the most appropriate camera for hobby photography?
Generally speaking, a comment like this should really go on the Photo.SE meta site, with a comment linking it. This really isn't an ideal "answer" for this site, as it is more a discussion of what is acceptable/not acceptable here. I recommend either finding related threads on meta (there should be some), or starting a new one if none of the existing ones fit, and link it in a comment to the original question.
Oct
22
awarded  Enlightened
Oct
22
awarded  Nice Answer
Oct
21
comment Is the Canon EF 35-105 lens compatible with Canon T2i body?
Thats interesting. I would have expected it to work with the T2i if it worked with the original Digital Rebel. Have you tried what Matt said, and cleaned the electrical contacts on the lens mount?
Oct
21
comment What does “expanded ISO” mean?
Agreed about higher "fake" ISO's. They are quite problematic, and really don't buy you much since the sensor isn't actually more sensitive. I really wish sensor makers would put more effort into reducing the true base ISO from 100 to 50, rather than artificially expanding to 50k and 100k, as there really isn't any true benefit over what you could do better yourself during post-processing.
Oct
21
comment What does “expanded ISO” mean?
I do know that Nikon, until very recently, had a base ISO of around 160 or 180, which made their ISO 200 the "best performing" from an SNR perspective. I do know that older digital cameras used to use ISO 200 as the base (and often the minimum), however for at least the last several years, Canon has used ISO 100 as their base (in actuality it comes out a little higher simply due to physics, but generally speaking.) I think Nikon's more recent releases use a true ISO 100 base, rather than something closer to ISO 200. Many medium formats use ISO 80 as their true base.
Oct
21
comment What tips and advice do you have for photographing the Aurora Borealis?
If you make the assumption that you need to brighten the resulting image during post-processing, then yes, ISO800 might end up looking noisier than ISO1600. But thats making the assumption that you need to increase the exposure of the image during post-processing. I'm able to get some great shots of the milky way with a 50mm f/1.8 at ISO 800 that don't require brightening, and given that the auroras are brighter than stars, I would imagine ISO 800 to be great at f/1.4. The auroras don't move fast enough to need a super fast shutter speed and a higher ISO (they change over a period of minutes.)
Oct
21
answered Where can I find comparisons for linear polarizers (for a cheap variable ND filter)?