brian

brian

Lives in United States Petersburg, VA, United States
Works as a lens designer, photographer, entrepreneur
Joined on Oct 2, 2000

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

Subject Forum Last post
MTF comparison of original, ULTRA, and XL Speed Boosters for M43 Micro Four Thirds Talk 1 day ago
New Metabones Speed Booster ULTRA M43 with autofocus Micro Four Thirds Talk 5 days ago
Voigtlander 17.5mm vs the Rokinon 24mm w/speedbooster/turbobooster Micro Four Thirds Talk 2 weeks ago
Lens Option: speedbooster with sigma 18-35 vs Leica 42.5 vs 12-35 Panasonic Micro Four Thirds Talk 4 weeks ago
Metabones 0.64x Speedbooster Micro Four Thirds Talk 2 months ago
All around lens for videos Micro Four Thirds Talk 2 months ago
The new speed limit for m4/3 (at least for GH4) is f/0.80 Micro Four Thirds Talk 2 months ago
Kipon adapter — canon or nikon lenses on OMD Micro Four Thirds Talk 3 months ago
What are the advantages to full frame Sony Alpha / Nex E-mount (APS-C) Talk 4 months ago
Oh boy. What are we anticipating for April Fools' jokes in the photo realm this year? Open Talk 4 months ago
Crop Factor - GH4 and Metabones Speedbooster Beginners Questions 5 months ago
Can you give any Nikon Lens have Aperture Ring on it. D-Type Nikon SLR Lens Talk 5 months ago
Panasonic 12-35mm f2.8 vs Sigma 18-35mm f1.8 w/Metabones Speedbooster EF to M43? Micro Four Thirds Talk 5 months ago
Metabones Speed Booster "ULTRA" - Fujifilm X System / SLR Talk 5 months ago
Any one have F/1.2 lens on Micro Camera ? Micro Four Thirds Talk 5 months ago
first fuji...have I thought it through? Fujifilm X System / SLR Talk 6 months ago
Wow!! Why is it taking so long for DPREVIEW to release the final verdict on the NX 1 Samsung Talk 6 months ago
No lenses yet, should i go with Speedbooster & EF or Voigtlander MFT Lenses? Micro Four Thirds Talk 6 months ago
Deciding on lens for "speedboosted" (w/ speedbooster) cam Micro Four Thirds Talk 7 months ago
A7II vs a6000 IQ (Full Frame vs APS-C) Sony Alpha Full Frame E-mount Talk 7 months ago
Speed booster, longer lenses (135mm) and depth of field Sony Alpha / Nex E-mount (APS-C) Talk 7 months ago
limit max aperture=f0.5 ? Photographic Science and Technology 7 months ago
can a speedbooster/focal length reducer be used from e-mount TO e-mount? Sony Alpha / Nex E-mount (APS-C) Talk 7 months ago
DSLR or Mirrorless Beginners Questions 8 months ago
Metabones speed booster???? Micro Four Thirds Talk 8 months ago
Voigtländer 25/0.95 or speedbooster and sigma 35/1.4 Micro Four Thirds Talk 8 months ago
Is there a full-frame to APS-C converter for Pentax K mount? Pentax SLR Talk 9 months ago
Metabones EF to m43 speedbooster s Micro Four Thirds Talk 10 months ago
New CanonEF-m43 Speed Booster available to fit Olympus cameras Micro Four Thirds Talk 10 months ago
An interesting observation by Lens Rentals regarding the filter stack Photographic Science and Technology 10 months ago
Metabones Leica R to m4/3 Speed Booster on Blackmagic Pocket Cinema? Micro Four Thirds Talk 11 months ago
When f/0.95 is not enough... Sony Alpha / Nex E-mount (APS-C) Talk 11 months ago
Could Panasonic make a 12-50mm f2 for $1000 or less? Micro Four Thirds Talk 11 months ago
Better Adapter for Otus Lenses: Novoflex or Metabones? Open Talk 11 months ago
The Great Debate: $1600 Nocticron vs $4000 Otus Open Talk 11 months ago
New Metabones adapters for canon EF Micro Four Thirds Talk 11 months ago
Metabones announces the new Speedbooster ultra Sony Alpha / Nex E-mount (APS-C) Talk 11 months ago
Micro Four Thirds Focal Reducer Shootout Micro Four Thirds Talk Aug 21, 2014
Which brand of speedbooster? Sony Alpha / Nex E-mount (APS-C) Talk Aug 13, 2014
Lenses that work well with focal reducers? Micro Four Thirds Talk Jul 23, 2014
Fast lenses, and High ISO Open Talk Jul 21, 2014
Best Lenses to Adapt / SpeedBoost? Micro Four Thirds Talk Jul 16, 2014
Perspective compression/speedbooster confusion? Beginners Questions Jul 7, 2014
That lump of glass in front of the sensor and its effect on non native glass Micro Four Thirds Talk Jun 24, 2014
Sony DT 35mm 1.8 on a full frame? Any results available? Sony Alpha / Nex E-mount (APS-C) Talk May 9, 2014
Sigma 18-35mm f/1.8 on the Speed Booster EF to M43 mount adapter Micro Four Thirds Talk May 7, 2014
Focal length reducer for M43 and corner / edge resolution Micro Four Thirds Talk May 4, 2014
Calling owners of the Canon FD 85mm 1.2L on Speedboosters Micro Four Thirds Talk Apr 28, 2014
Metabones or Novoflex adapter for a7R ? Sony Alpha Full Frame E-mount Talk Mar 24, 2014
Speedbooster/Mitakon old legacy lenses on MFT bodies - Example Images Micro Four Thirds Talk Mar 23, 2014