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The lens comes at a $500 premium over the conventional XF56 lens, and it will be available in December for $1499.95. As you close the aperture down, less and less use is made of the outer edges of the apodization filter, so the difference between the T-stop and F-stop value decreases until they're the same at F5.6 and darker. The depth of field depends on the f-stop but the exposure required by the lens will relate to the marked T-stops. The 56mm APD features two levels of markings: the conventional F-stops, marked in white, and the T-stops, that take light-transmission into account, in red.
![adp what are xf and fo adp what are xf and fo](https://i.ebayimg.com/images/g/fvEAAOSwBahU1YIq/s-l1600.jpg)
The Fujifilm lens is limited to the use of contrast detection autofocus (because the apodization filter darkens exactly the region of the lens that the phase-detection elements would usually collect light from), but it can still autofocus.
#Adp what are xf and fo manual
However, while the Minolta lens was manual focus only, the 56mm APD isn't.
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The Fujifilm 56mm F1.2 isn't the first lens to use an apodization filter: Minolta's 135mm STF lens, still made by Sony, used the same principle. It would also be expected to match the existing 56mm lens for sharpness but offer more pleasant bokeh. This means it should produce out-of-focus highlights with even fall-off and smoother rendering of out-of-focus regions. The lens is a variant of the existing XF56mm F1.2 R, utilizing the same underlying design of 11 elements in 8 groups but it adds an apodization filter.Įssentially, the apodization filter is a radial gradient filter designed to exactly compensate for any bright regions in the circles of confusion the lens projects. Gearing up for Photokina, Fujifilm has announced the XF 56mm F1.2 R APD - APD standing for apodization.