Lunt Engineering 7×50 MS
Objective diameter: 50 mm
Magnification: 7 x
Exit pupil: 7.1 mm
Eye relief (acc. to spec): 23 mm
Usable eye relief (measured from rim of eyecup): 17 mm
IPD: 56 – 74 mm
RFOV: 7.5 degrees = 131 m
AFOV (measured, rounded): 52.5 degrees
Minimum focus distance (measured): 7.15 m
Focus type: IF
Prism system: Porro I
Weight (measured, with eyepiece cover and strap): 1‘440 g
Made in: China
Lunt Engineering was sort of an “off-spring” of famous US solar instrument company Lunt Solar Systems, Inc., which together with APM owner Markus Ludes brought a range of China- made Porro binoculars to the hobby astronomer’s market, providing direct competition for established manfacturers like Fujinon. Manufactured by KUO (Kunming United Optics) and labelled “BA8”, the same instruments were sold under various brand names and with varying external features, some with and some without rubber armour. The ones from Lunt Engineering were 7×50, 10×50, 11×70 and 16×70 models with good performance characteristics for a very competitive price, which were well received in the market. Nevertheless, Lunt stopped selling its binoculars after a few years, and APM continued in Lunt’s footsteps, added a 20×70 model and upgraded the line with ED glass, further improving the image quality.
See separate posts:
Lunt Engineering 10×50, https://binocular.ch/lunt-engineering-10×50-ms/
Lunt Engineering 20×70, https://binocular.ch/lunt-engineering-20×70-ms/
APM 10×50 ED, https://binocular.ch/apm-ms-10×50-ed/
APM 20×70 ED, https://binocular.ch/apm-ms-20×70-ed/
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