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Leica 50mm f/2 APO-Summicron-M ASPH

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The Leica 50mm f/2 APO-Summicron-M ASPH

The Leica 50mm f/2 Summicron-M ASPH is a normal range lens designed for Leica M-mount cameras. The 50mm f/2 Summicron-M offers very high image quality. Wide open at f/2, there’s slight vignetting in the extreme corners, but by stopping down to f/2.8, vignetting is eliminated. It has extremely low distortion (0.4% pin cushion) that’s nearly imperceptible and offers excellent contrast rendition at all focus distances thanks to its floating-element lens design.

What makes this lens so unique is its resolving power across the image plane. By f/5.6, both tangential and sagittal lines of MTF testing are flatlined, which signifies absolute edge-to-edge image sharpness and contrast. Three apochromatic glass elements provide a common focus plane for three light wavelengths, effectively eliminating chromatic aberration, with two high refractive index elements further improving light transmission. Its Gaussian-type optical formula also features an aspherical surface element in the first position of the floating rear group, eliminating spherical aberration and allowing its superb flat image field.

It has 6-bit encoding so the camera will automatically apply vignetting correction (unless you’d prefer to disable that option). The built-in, retractable lens hood provides protection from lens flare, and the front of the lens barrel is threaded to accept 39mm filters. For situations where the highest possible image quality is required, the 50mm f/2 Summicron-M ASPH excels beyond anything else available.

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We offer a 3-day inspection period on all sales, during which time you may return the item for a refund of the purchase price, not including shipping.

On this item, we include a LensAuthority 90-day limited warranty. This warranty covers damage that arises from normal use of the item. It does NOT cover accidental or intentional damage. More details are available in our FAQ section.

In addition to the standard 90-day warranty, you may have the option to purchase an extended warranty. If we're able to offer an extended warranty on this item, you'll see a checkbox to add that warranty - see the area just above the "Add to Cart" button.

If you select the extended warranty, you'll get additional protection from Consumer Priority Service ("CPS"). The CPS warranty will take effect after our 90-day warranty ends. However, the CPS warranty term would begin on the date of purchase. For example, if you buy an item with a 2-year extended warranty today, your coverage would end two years from today. Click the link below for all the details:

Extended Warranty Details