This is a yuzu, my favorite citrus fruit. It is a bit early for yuzu which is why this one is such a light color; December is peak harvest.
Camera model SGH-T999 Shutter speed 1/15 Aperture f/2.6 Maximum aperture f/2.8 Exposure bias 0.00 Exposure Aperture priority Exposure index 0.0 Focal length 3.7,mm Distance 0.00 m Light source Unknown Flash Off Metering CenterWeightedAverage Brightness 0.7 ISO sensitivity 200