We want to talk a little more on the XF56mmF1.2 R.
\nThe two ED lenses, these are not enough to explain the crisp and sharp image quality that the lens delivers.
\nToday, we want to look toward the back-end.The key is highlighted in the picture: the aspherical lens and the triplet lenses.These 4 elements are the focus lens group for XF56mm.
\nTo say it as inner focus, the focus lens group is enormous, and just by looking at it, it makes you feel that the image quality is going to be great.On top of that, the 3 lenses are triplet lenses.
\nGenerally speaking, there is a space between lenses.
\nAnd inevitably the air gets in the space, which will cause reflection on the surface of the lens. But in the case of triplet lenses, there isn’t any space in between.
\nIt is tough against reflection, ghost and flare.
\nThere is one another work against reflection, ghost, and flare: using less lenses.
\nUsing aspherical lens instead of spherical lens is an good example.
\nAs far as image quality is concerned, using large focus lens group with multiple number of elements will be the easier way to design the lens.
\nBut then the AF speed and ghost are the price you have to pay. So here, we have come up with the idea of 1 aspherical lens with triplet lens.
\nAs long as there is not white mass of light is shown, users are not concerned about ghost. But the reflection on the surface of the lens certainly degrades the sharpness and the contrast.
\nXF56mm is crisp and sharp because it works against ghost and eliminates it as much as possible.<\/p>\n<\/p>\n