Promaster 46mm Protection - Digital HD wwinv Using Manual exposure mode is

Using Manual exposure mode is the best way to go

In regard to the physical design

If your device does not support U3

3MP CMOS sensor is paired with an EXPEED 6 image processor to provide a versatile mixture of high sensitivity

designed to guard against scratches

Promaster 46mm Protection - Digital HD wwinv Using Manual exposure mode isThe ProMaster Digital HD Protection Filter is an extremely high quality optically clear filter designed primarily to protect your lens. Constructed with premium Schott optical glass and 12 layers of anti relective coating, these filters are designed to yield extreme image sharpness. They also feature a precision machined, super slim aluminum frame with anti reflective matte finish and knurled edges.