H2ODoctor

H2ODoctor

Lives in United States CA, United States
Works as a Chemical Engineer
Joined on Jan 23, 2010

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Snapshot of threads updated recently in which you have recently participated.

Subject Forum Last post
Carrying Oxygen & a 100-400 Canon SLR Lens Talk 9 months ago
500 mm Open Talk Sep 3, 2013
New Lenses I would like Canon to make Open Talk Aug 31, 2013
anyone still using their 10d and still loving it? Canon EOS 7D / 10D - 70D Talk Apr 8, 2013
Canon 70-300 IS USM vs 70-300 L IS USM Canon SLR Lens Talk Mar 6, 2013
Need Carry Strap Recommendation Canon EOS-1D / 5D / 6D Talk Feb 24, 2013
I want an L lens and can afford either the 70-300 or the 100-400. Which one? Canon SLR Lens Talk Oct 29, 2012
"Sticky" zoom on Canon 100-400mm lens Canon SLR Lens Talk Oct 1, 2012
Lenses recommended for San Diego Zoo Canon SLR Lens Talk Jul 24, 2012
Compare 70-200/4 and 100-400mm, please Canon SLR Lens Talk May 28, 2012
MFA again? Going from 7D to 1d MK IV Canon SLR Lens Talk May 2, 2012
Canon 100-400 question Canon SLR Lens Talk Apr 21, 2012
Safari Lens recommendation for 5D MKII Canon SLR Lens Talk Dec 17, 2011
Safari lens 70-300L or 100-400L Canon SLR Lens Talk Dec 16, 2011
Best camera/lens for bird photo trip to Costa Rica? Canon SLR Lens Talk Oct 29, 2011
Costa Rica for 7 Days next month, Renting a lens. Or two. Canon SLR Lens Talk Sep 8, 2011
Maximum Weight Load for Tripod Canon SLR Lens Talk Jul 2, 2011
Canon 400mm F/5.6 Canon EOS 7D / 10D - 70D Talk Feb 7, 2011
distance a canon 580 flash and BetterBeamer Studio and Lighting Technique Feb 3, 2011
Northern Arizona - 2 shots Canon EOS 7D / 10D - 70D Talk Jan 28, 2011
Question on Canon 400 F5.6 Canon SLR Lens Talk Jan 23, 2011
New Canon 50mm f1.2 Canon SLR Lens Talk Jan 18, 2011
Getting ready for wedding shoot Canon EOS 7D / 10D - 70D Talk Jan 13, 2011
Wildlife shooters.... Canon SLR Lens Talk Dec 30, 2010
70-200 4L (IS) as macro Canon SLR Lens Talk Dec 22, 2010
7D sharpness setting for jpegs Canon EOS 7D / 10D - 70D Talk Dec 21, 2010
BIF : 7D + 400mm f5.6 Canon EOS 7D / 10D - 70D Talk Nov 22, 2010
Shoulder Harness for 7D 100-400 Lens Canon EOS 7D / 10D - 70D Talk Nov 14, 2010
New 7D Canon EOS 7D / 10D - 70D Talk Nov 14, 2010
Insects with Canon 100 macro IS Canon SLR Lens Talk Nov 12, 2010
Magnification versus distance from image Canon SLR Lens Talk Nov 7, 2010
My Canon EF 100mm f/2.8L Macro IS USM lens review Canon SLR Lens Talk Oct 30, 2010
new 70-300mm L, highly priced Canon SLR Lens Talk Oct 20, 2010
Did I make a good choice in lenses? Canon SLR Lens Talk Oct 14, 2010
DPP lense information not reporting Canon SLR Lens Talk Oct 6, 2010
7D goes to dinner with Canon 17-55 IS Canon EOS 7D / 10D - 70D Talk Oct 3, 2010
Exif subject distance Canon EOS 7D / 10D - 70D Talk Sep 24, 2010
Distance information? Canon SLR Lens Talk Sep 21, 2010
7D 1st Wedding Canon SLR Lens Talk Sep 10, 2010
Birds up close with the 400/5.6 Canon SLR Lens Talk Aug 23, 2010
50mm f/1.4 and a 24-105MM f/4 L on a T2i?? Canon SLR Lens Talk Aug 20, 2010
lens choices weight restrictions Costa Rica Canon SLR Lens Talk Aug 4, 2010
100-400L: how effective is IS ? Canon SLR Lens Talk Jul 19, 2010
Canon 100 mm F2.8L IS vs 100 mm F2.8 macro Canon SLR Lens Talk Jun 16, 2010
Safari Lens - Please Help! Canon SLR Lens Talk Jun 12, 2010
70-200 2.8 L IS II or 100-400 L IS Canon SLR Lens Talk Jun 3, 2010
Question on 7D Canon EOS 7D / 10D - 70D Talk May 23, 2010
Question on 7D Canon SLR Lens Talk May 22, 2010
Best way to carry 2 camera bodies Canon SLR Lens Talk May 11, 2010
Sell my Canon 100-400 and get an EF-300mm f2.8-L? Canon SLR Lens Talk Apr 11, 2010