- Description: the heart of this barlow is a genuine Nikon lens (rebranded to "Madrid Sky") and it is mounted in custom-made mount. It got superb marks in a slanted edge review (obviously it falls behind the Zeiss-Madrid Sky APO Barlow by a small margin and that reflects in price) and it is specially designed to be used for full-frame imaging with a flat sensor after it (although you can also use it with eyepieces). You can see test report HERE (published on 26TH Dec 2022) (Battle of the Barlows test shootout...). It is good down to F2 (or even less, depending on scope inherent design) and it completely covers a 35mm FULL FRAME sensor size. It is FULLY MULTICOATED, low dispersion glass with super-low scatter capabilities, great for high resolution enviroments. It is recommended that distance between back lens and sensor be in the range of 4-8cm (less is generally better).
- Connection: It has T mount female (M42x0.75) "camera side" and T mount male (M42x0.75) "scope side". It includes an additional T mount male to 1,25" barrel adapter (attaches to the front of housing to mount in 1,25" barrels if desired to mount this way instead the more convenient T mount thread, which is usually better centered and more rigid solution).
- FULL FRAME INFO: this lens works ok as FULL FRAME as it is now sold.
- Issues: VERY LIMITED QTY AVAILABLE. First come, first served. I cannot guarantee future availability and price could step up considerably in the future.
- Personal guarantee for buyers: 3 months for full refund of your money (shipping costs not included) in case you do not like it. That's how confident I am on this piece of lens. To be applicable, please, just return lens in same condition as when it left here