Phase One V-mount P25+ Digital Back 22-megapixel Sensor size: 48x36mm This is twice the size of a typical full-frame 35mm sensor (the size of two 35mm sensors placed side by side vertically). It can be mounted directly onto Hasselblad 500 series bodies. This model can be mounted on the body even when rotated 180 degrees for vertical shooting. I am selling this because I purchased a digital back with a larger sensor. While it's not noticeable for my use (handheld snapshot photography), when zoomed in to 100% and looking closely, horizontal noise lines can appear in dark areas. This also occurred with a previous Phase One model from the same series, so I cannot recommend it to those who are concerned about this. This is more likely to occur with underexposure. As a countermeasure, I found it effective to overexpose slightly when shooting and then adjust in Lightroom. Also, it is more likely to occur indoors than outdoors during the day. Please refer to the sample photos. Photos 12 and 13 are examples of insufficient light. Exposure was increased by +5 in Lightroom. ISO 200, shutter speed 1/250 Photo 14 was taken under the same conditions with a shutter speed of 1/60; the original was very dark due to insufficient light, but the exposure was increased by +4 in Lightroom. The noise was not noticeable. Photos 15 and 16 (ISO 400, shutter speed 1/125) and 17 and 18 (ISO 200, shutter speed 1/125) are examples of indoor and outdoor shooting, respectively. It is not noticeable in photo 15, but noise can be seen in the dark tones in the lower right corner; it is made clearer in photo 16. In outdoor photos 17 and 18, there is no noise at all, even though the subject has dark tones. Included accessories: 2 batteries, 1 charger, 1 strobe cable (worn but usable), 1 body cover, 1 original attache case Please refrain from price negotiations. Thank you.