Yes, the filter diameter should be 49mm. Thick filters such as polarizing filter and close-up lens may cause vignetting. When using such a filter, frame your subject while confirming live image in the EVF or on the LCD monitor display. Use of the following Konica Minolta filters will cause the vignetting at the specified focal-length. Recommend use of those filters beyond the range. - Vignetting occurs with 50mm or shorter focal-length: Polarizing Filter (Old and New), Close-up Lens No.0 and No.1 - Vignetting occurs with 100mm or shorter focal-length: Close-up Lens No.2