Tenders are invited for Binocular Optics Type Porro Prism
Series, Eye Interval Adjustment Range 60-70 Mm, Lens Configuration 6 Elements/ 4 Groups, Magnification More Than 7X, Actual Field View Less Than 10 Degree, Field Of View More Than10 Mtrs, Closest Focal Point In Between 3.
Most of the binoculars I'm familiar with are roof-prism designs, not the porro prism
found on the Yosemites.
The new LandScout Porro Prism
binocular series from Celestron offer durability, quality lenses and a host of other features.
Leica's phase-corrected Perger Porro prism
design merges the benefits of roof and Porro designs, delivering a streamlined form factor without sacrificing depth of field or color fidelity.
Favored for their compact nature and high-performance Porro prism
optical system, the Leupold BX-1 Rouge Series ($124.
While roof prism instruments look rather like two small telescopes fitted together in parallel, porro prism
types have an off-set in them so that the eyepieces are closer together than the objectives.
The BX-2 Acadia binoculars combine the handling of a roof prism binocular with the performance and price of a porro prism
scopes have a characteristic dogleg in the barrel (see photograph above right).
Birding forums also gave a high rating to the Leupold Yosemite 8x30 porro prism
, especially impressive since it retails for around $100.
INTRODUCED IN 2009, Leupold's Rogue Porro prism
binoculars have become such a hit that the company has expanded the line this year with two new models.
Two porro prism
Discoverer binocular models are new, the 8x42mm and the 10x42mm.
These products include the Travelite V series of Porro prism
compact binoculars; the Fieldscope III series of high-end spotting scopes; the Nikon Naturescope Mini field microscope; the Pronea S ultra-compact Advanced Photo System SLR camera; and Nikon's Coolpix 950 compact digital camera.