Why in some cases, as deformation Spherize filters are not available in Photoshop?

Answer

Some filters are in effect unavailable in some contexts Photoshop while the area to filter or distort is selected and it is not empty pixels. Often, the cause comes from the color mode of your image. In 16 bits / channel, filter can remain highly accessible. Try this: Pull down the Image menu, point mode, and click 8 Bits / Channel, Pull down the Filter menu now. You notice that all effects are again available.