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Bausch & Lomb CP-4 Barlow

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Have had this for a while but just don’t use it, very clean and sharp 2x barlow. I compared this to a couple other 2x barlows I have, a Japan-made Orion Deluxe long barlow and my TAL lanthium shorty. Using a 25mm plossl, I saw no difference in brightness or sharpness between the three, nor any vignetting. Length-wise the B&L falls right in the middle. Very well made slip-fit unit. Will cover shipping CONUS with caps.