Sunset in Kruger

by MrFrench

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56,123 reputation
8114259
bio website jonrista.com
location Aurora, CO
age 35
visits member for 4 years, 9 months
seen 7 hours ago

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

6h
answered What are the exact pixel values (or ranges) for shadows/midtones/highlights in Lightroom?
7h
comment Are there cameras that autofocus during an exposure?
Are you looking to focus during a single exposure? Or looking to focus during video, or multiple exposures? Changing focus during a long exposure is sure to result in a totally blurred image. Tracking focus during an ongoing, long exposure doesn't have any real value. As for focusing during say video...Canon has DPAF which will do that, and other manufacturers have similar things (although usually done with CDAF).
16h
awarded  Good Answer
1d
awarded  Necromancer
Apr
27
comment Why should I use the widest aperture for star photography?
With modern DSLRs, pixel sizes are small enough that to actually avoid trailing at the pixel level (vs. at the downsized for web magnification level), you need to be using 8-10 second exposures. That's much too short to really get much of your signal above the read noise floor. As such, I think it's best to use a Polarie or SkyTracker (or, for that matter, an AstroTrac, although that is more expensive) even when using a 14/16/20mm lens. You can then be assured that you will have round stars that are easier to align and stack, and you'll actually be able to stack.
Apr
27
comment Why should I use the widest aperture for star photography?
There is no need to spend thousands on exotic tracking mounts. You can spend about $400 on something like a Polarie or SkyTracker, which is actually what I would recommend for someone using fast primes on a DSLR. I then also VERY strongly recommend using a tighter aperture. I know quite a few milky way imagers who use the iOptron SkyTracker. They will track most of their shots, and usually landscape aspects will blur. Then they will grab a few static shots to stack for the foreground, and a bit of manual blending corrects the interface of ground and sky. Absolutely no need to spend thousands.
Apr
24
comment When does “Fill the frame” become “Too tightly framed”?
I agree with Matt here, I don't think this is an opinion-based type question. I think it is a legitimate question that plays a key role in choosing the right kind of composition for images.
Apr
24
comment Why should I use the widest aperture for star photography?
That is a difference of 4-7 orders of magnitude difference in light levels. The reason you would use a faster aperture is to get more light, not use a shorter exposure. The only caveat to that might be if you are imaging in a heavily light polluted area, in which case you might be limited to exposing for 2-3 minutes at f/4, 30s-90s at f/2.8. However in a light polluted area, you should be using a filter like the IDAS LPS-P2 or -D1 to block some of it.
Apr
24
comment Why should I use the widest aperture for star photography?
I wouldn't apply the "larger aperture allows for faster shutter speed" when it comes to astrophotography. That is daytime terrestrial photography thinking there, and it doesn't really apply to astrophotography. You need long exposures in astro, LONG exposures, so a faster aperture just means for whatever maximum exposure time you can handle, you get more light. You generally wouldn't want to reduce exposure when moving to a faster aperture, because you aren't getting enough light to start with. In astro, you work with around 0.002-0.005 lux, whereas most daytime photography is 500-100,000 lux!
Apr
24
comment Why should I use the widest aperture for star photography?
Glad to be of service. :) Astrophotography has become my obsession these days...learned a lot from years ago when I was just poking around with it.
Apr
22
answered Why should I use the widest aperture for star photography?
Apr
12
revised How can I calculate what the effect of an extension tube will be?
deleted 195 characters in body
Apr
5
awarded  Popular Question
Apr
3
comment How to do 1 or more photos per second without jitter using a Canon 7D?
I think davidsmith hit on a critical point. Is your focus manual, or set to AF? If set to AF, and AF is linked to the shutter, and you have the AF system set to lock focus before releasing the shutter, then you are very likely experiencing focus hunting which is resulting in the inconsistent timing. I would make sure your set to manual focus, manually focus on the area you want to expose, set a tighter aperture for deeper DOF, and see if that fixes the issue.
Apr
3
comment How to do 1 or more photos per second without jitter using a Canon 7D?
I am not sure how buffer congestion would be the problem at 1fps and with JPEG images. I think something else is going on...probably focus hunting or something like that.
Mar
25
comment How to achieve this smudge effect in photoshop?
I think user38275 nailed it. Looks like water with something that slightly clouded it to me. The strands of hair in the front definitely look like they are floating on a smooth water surface. There also seems to be a fairly well delinated point at which her face goes from being in clear air to being in the water. I don't know that you could get this precise a look with artificial fog...I'm not going to say it's impossible, but I think it would be significantly more difficult to do.
Mar
22
revised Does the size of blower matter to clean the sensor of the camera?
Removed "whiners"...unnecessary, inflamatory
Mar
22
comment Does the size of blower matter to clean the sensor of the camera?
I would like to keep this answer here. Ironically, even though the recommendation is not a good one, and the reasons why have been well documented, I think it is valuable to keep it around for the reaction and the comments. It is important people who come here from web searches and such know that using canned air with propellants comes with risks.
Mar
21
awarded  Nice Answer
Mar
20
answered How to disassemble a lens assembly?