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Showing posts from November, 2013

Tamron SP 150-600mm F/5-6.3 VC USD sample image

Photos taken with Tamron  SP 150-600mm F/5-6.3 VC USD, image , 

Time: 1/320s
 Aperture: F6.3
Focal length: 329mm

Time: 1/1250s
Aperture: F6.3
Focal length: 600mm

Time: 1/400s
Aperture: F7.1
Focal length: 600mm
Time: 1/160s
 Aperture: F5.6
Focal length: 329mm

Advanced optical technology Three LD (Low Dispersion) elements are effectively deployed to correct chromatic aberrations, a challenging problem when shooting at long distances and at long focal-length settings. Tamron's eBAND Coating and BBAR (Broad-Band Anti-Reflection) Coating help suppress flare and ghosting for class-leading image quality. New eBAND (Extended Bandwidth & Angular-Dependency) Coating This new coating technique developed by Tamron deploys a nano-structured layer (1nm = 1/1,000,000mm) of ultra-low refractive index, with dimensions smaller than the wavelengths of visible rays of light. This nano-structured layer coupled with the sophisticated multiple layer coatings underneath, yields significant ant…

Tamron SP 150-600mm F/5-6.3 Di VC USD announced

Tamron has announced the development of a 150-600mm F5-6.3 zoom lens for full-frame and APS-C sensor cameras. It will feature 20 elements in 13 groups and have a minimum focus distance of 2.7m. Tamron will also include VC (Vibration Compensation) image stabilization and USD (Ultrasonic Silent Drive) technologies. The lens will be developed for Canon, Nikon, and Sony mounts. Pricing and availability are still to be announced.

Specs:Principal specificationsLens typeZoom lensMax Format size35mm FFFocal length150–600 mmImage stabilisationYes (VC – Vibration Compensation)Lens mountCanon EF, Nikon F (FX), Nikon F (DX), Sony AlphaApertureMaximum apertureF5.0 – F6.3Minimum apertureF32.0 – F40.0Aperture ringNoNumber of diaphragm blades9OpticsElements20Groups13Special elements / coatingseBAND (Extended Bandwidth & Angular Dependency) CoatingFocusMinimum focus2.70 m (106.30″)AutofocusYesMotor typeUltrasonicFull time manualYesDistance scaleYesPhysicalWeight1951 g (4.30 lb)Diameter106 m…

Sony Alpha A7 Review -- First Impressions test

Basic SpecificationsResolution:24.30 MegapixelsSensor size:35mmKit Lens:2.50x zoom
(28-70mm eq.)Viewfinder:EVF / LCDISO:50-25600Shutter:30-1/8000Max Aperture:3.5Dimensions:5.0 x 3.7 x 1.9 in.
(127 x 94 x 48 mm)Weight:27.1 oz (769 g)
includes batteries, kit lensMSRP:$2,000Availability:12/2013
Sony Alpha A7 Review -- First Impressionsby Mike Tomkins and Dave Etchells
A little over a decade ago, enthusiast photographers were clamoring for an affordable APS-C digital SLR. That dream has long since become a reality, but for some, the dream wasn't big enough. They've been asking for an altogether different -- yet still affordable -- camera. They needed it to have a bigger sensor, and to drop the bulky mirror box of an SLR. Until now, they could choose one or the other. Sony has changed all that, with the launch of the full-frame Sony A7 and A7R mirrorless cameras.
The two cameras are very closely-related, and in this first impressions review, we'll be looking at …