Беспроводная цифровая usb микрокамера

The exterior of objective lenses shows no traces of coating. Note that беспроводная цифровая usb микрокамера беспроводная цифровая usb микрокамера extreme care must be taken when cleaning these old anti-reflective coatings.

Not only do they easily scratch and rub off but cryolite is soluble in warm water. I cleaned gently with isopropanol followed by methanol with no problems.

====================== The optical performance of this binocular is quite good: it is better than the Ross Binoprisms беспроводная цифровая usb микрокамера and Barr & Stroud CF 41 especially in sharpness toward edge of field; noticeably brighter and sharper than the excellent Barr & Stroud CF 25; and самые маленькие скрытые микрокамеры somewhat brighter than even the coated B&L Mk 28 and REL’s.

My only objection is that its rubber eyecups get in the way during viewing. If this binocular was беспроводная цифровая usb микрокамера not collectable and I was using it беспроводная цифровая usb микрокамера every day, I would cut them off беспроводная цифровая usb микрокамера which I think the диплом микрокамера Germans sometimes did.

Ones made a little later in the war had hold-back tabs molded in the rubber to solve this problem. For more information about Leitz WW беспроводная цифровая II usb микрокамера Porro II binoculars see: telscope 7x50.txt and also Fan Tao's review of the Leitz 8X60 Porro II (беспроводная цифровая usb микрокамера build is very similar to the 7X50) binofan.co.cc bino beh8x60.htm.

A thank you to collector, Michael Downey, for sharing his research about Leitz WW II Porro II serial numbers with me. Английский морской бинокль, Barr & Stroud 7X CF41 7X50 ================== Американские бинокли. NAVY BU.беспроводная цифровая SHIPS usb микрокамера MARK 28 MOD 0 7X50 Field of View: 7 deg 10 min = беспроводная цифровая usb микрокамера 124.5 m 1,000 m; APFOV 50.12 deg Weight: 1353 gr Exit Pupil: 7.14 mm Serial # Year беспроводная usb микрокамера цифровая of Manufacture: 170434 = 1943 1944 Значительно более эргономичная, близкая к современным, модель.

Optically this is one of the best circa WWII 7X military binoculars in collection being, I think, just a little bit sharper to edge than the best of беспроводная цифровая usb микрокамера the 7X50 REL's. The beh беспроводная цифровая usb микрокамера Leitz 7X50 is a little brighter, however, цифровая usb микрокамера and also has good микрокамера челябинск edge of field sharpness.

Mark 28 was manufactured from 1944 – 1945, but continued to see service беспроводная цифровая usb микрокамера with U.S forces well into the1980’s. Although he states that they were not originally coated, this being done only беспроводная цифровая usb микрокамера upon reconditioning, I believe this applies only беспроводная цифровая usb микрокамера to the earliest ones produced and that those made in 1945, at least, were coated upon manufacture.

The above example does have coated optics which was probably done during a later reconditioning.

А вот 7х50 производства другой американской компании. NAVY BU.SHIPS MARK 30 MOD 0 7X50 Field of View: 7 deg 40 min = беспроводная цифровая usb микрокамера 134 m 1,000 m; APFOV 53.2 deg Weight: 1241 gr Serial # Year of Manufacture: 294711 = 1944 Rohan discusses the Navy Mark 30 on page 39 of his book “A Guide to Handheld Military Binoculars”. It was manufactured from 1943-1944, was considered waterproof, had anti-reflective микрокамера для видеонаблюдения беспроводная coated optics, and was of smaller size with a wider field of view than most other WW беспроводная II цифровая U.S.

Excepting the Marks 41 and 45, the 7X50 binoculars made by Bausch & Lomb, Sard, Universal Camera, беспроводная цифровая National usb микбеспроводная цифровая usb микрокамера рокамера Instrument, and Anchor Optical are optically and mechanically very alike (large Bausch & беспроводная цифровая usb микрокамера Lomb type chassis, 7.1 degrees FOV with good optics, same ocular замаскированная микрокамера design) differing mainly in provisions for беспроводная цифровая usb микрокамера weatherproofing, filters and graticules and are best exemplified by the excellent Bausch & Lomb Mark 28.

In use, the микрокамера купить в Mark 30 is definitely more comfortable to carry and hold than the heavier and bulkier Mark 28.

Optically, both seem to have equal brightness, sharpness and беспроводная цифровая usb микрокамера color rendition, and their “sweet spots”, the sharp central areas of view, seem to be of about the same size.

However, the Spencer has a noticeably wider field of view (7.7 degrees vs.

the Mark 28’s 7.16 degrees) but, as is often the case with a wider angle view, it also has a noticeably greater amount of softness at its edge of field. Вполне себе приличное поле, хорошая эргономика, просветление.

А вот мы подошли к самому интересному моменту, к американскому шедевру.