photonius

Lives in United States United States
Joined on Jan 5, 2008

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Subject Forum Last post
Petal hood for 100-400 II? Canon SLR Lens Talk 3 weeks ago
100-400mmL II - an issue with streaks in bokeh (PICS) Canon SLR Lens Talk 9 months ago
Reverse lens macro magnification calculation? Canon SLR Lens Talk 10 months ago
Best Lowepro lens case for Canon 100-400 f/4.5-5.6L IS II USM ? Canon SLR Lens Talk Aug 31, 2019
New name for this forum? Canon SLR Lens Talk Jul 24, 2019
Canon 100-400mm f/4.5-5.6 USM IS II Canon SLR Lens Talk Jul 15, 2019
Canon 18-55mm IS STM vs Sigma 17-70mm DC HSM OS Macro|C Canon SLR Lens Talk Jul 12, 2019
Canon 100-400mm II only reaches to 370mm? Canon SLR Lens Talk Jun 21, 2019
Bizarre bokeh Canon EF 70-300 IS USM and 80D - faulty lens? Canon SLR Lens Talk Jun 18, 2019
Old Canon Lens to connect to newer Canon Canon SLR Lens Talk May 16, 2019
Using Extension Tubes with 100mm f2.8 Lens Canon SLR Lens Talk May 15, 2019
X2 Extender for Canon 75-300mm III USM Ultrasonic? Canon SLR Lens Talk May 3, 2019
Combining telephoto and macro lenses Canon SLR Lens Talk Apr 30, 2019
7d vs 800d/t7i Canon EOS 7D / 10D - 90D Talk Apr 26, 2019
Canon Extension Tube Evaluation & Impressions Canon SLR Lens Talk Apr 16, 2019
Just curious why EOS-M can have faster lenses than EF-S Canon SLR Lens Talk Mar 28, 2019
Marks on brand new lens contact? Canon SLR Lens Talk Mar 27, 2019
DOF question Canon SLR Lens Talk Mar 25, 2019
Canon 10-22 Filter? Canon SLR Lens Talk Mar 20, 2019
Inexpensive Canon/off-brand lens for product photography? Canon SLR Lens Talk Mar 15, 2019
Full Frame lens on a Crop Sensor Body Canon EOS 7D / 10D - 90D Talk Feb 22, 2019
250D or 500D Close up lens...But on which lens? Canon SLR Lens Talk Feb 20, 2019
What is "image circle" for Canon EF lenses? Canon SLR Lens Talk Feb 18, 2019
80D and EF 100-400mm IS II - limited amount of keepers Canon EOS 7D / 10D - 90D Talk Feb 16, 2019
140M EOS/RF/Cinema Lenses Manufactured Canon SLR Lens Talk Feb 14, 2019
Canon EF-S 10-18mm f/4.5-5.6 IS STM - Ghosting/Flaring issues Canon SLR Lens Talk Feb 14, 2019
Itorex MC Macro-Zoom 37mm-105mm 1:3.5 Canon SLR Lens Talk Feb 4, 2019
Best filter for minimizing lens flare Canon SLR Lens Talk Jan 31, 2019
What is your favorite exotic lens for Canon EOS? Canon SLR Lens Talk Jan 30, 2019
Physics / mechanics behind 1-stop aperture loss after attaching 1.4 extender? Canon SLR Lens Talk Jan 25, 2019
Is this lens 10mm on a full frame? Canon SLR Lens Talk Jan 11, 2019
Canon SSC coatings; How consistent? Canon SLR Lens Talk Jan 7, 2019
How do you take advantage of Lens stabilisation ? Canon SLR Lens Talk Jan 6, 2019
Shutter or curtain damaged? Canon SLR Lens Talk Jan 6, 2019
Which VERY long reach zoom for Canon FF? Cheap, average quality, size/weight not an issue.. Canon SLR Lens Talk Jan 2, 2019
High-res prime around 50mm for stitching panoramas? Canon SLR Lens Talk Dec 27, 2018
Balls Cut Off - EF 85mm f/1.4L Canon SLR Lens Talk Dec 10, 2018
Tamron 18-400 vs Sigma 18-300 Canon SLR Lens Talk Nov 29, 2018
Was the EOSR a second thought? Canon SLR Lens Talk Nov 18, 2018
RF 14-21 f/1.55L and RF 12-20 f/2.L, really? Canon SLR Lens Talk Nov 5, 2018
Will cleaning the front element eventually cause the coating to come off? Canon SLR Lens Talk Nov 2, 2018
Canon 7d-How to Enable Auto Lighting Optimizer? Canon EOS 7D / 10D - 90D Talk Sep 24, 2018
Is it recommended the use of UV filter in my lens? Canon SLR Lens Talk Sep 24, 2018
80D: how to touch focus when shooting still photo in liveview Canon EOS 7D / 10D - 90D Talk Sep 16, 2018
Lens recommendations for 77D Canon Rebel (EOS 200D-800D) Talk Sep 13, 2018
Lens Upgrades, what to do... Canon SLR Lens Talk Aug 27, 2018
Missing SL2 video file Canon Rebel (EOS 200D-800D) Talk Aug 13, 2018
APS-C 10-22mm incorrectly labelled Canon EOS 7D / 10D - 90D Talk Jul 24, 2018
Museum competition Nature and Wildlife Photography Jul 17, 2018
Extension tube for EF 50mm f/1.4? Canon SLR Lens Talk Jul 14, 2018