Comments about Sony Sony 74mm Circular Polarizer Filter for the Cyber-shot DSC-H7 and DSC-H9 Digital Cameras:
Does what a polarizing filter is supposed to do.
Comments about Sony Sony 74mm Circular Polarizer Filter for the Cyber-shot DSC-H7 and DSC-H9 Digital Cameras:
This filter does what a polarizer is supposed to do: in bright sun adds saturation and vibrancy to colors, makes water more transparent, and improves contrast to some degree. However, the 74mm size is unique to Sony and non-standard, so no one makes a lens cap to fit over this filter and protect it — not even Sony. Therefore, you end up with a large piece of (expensive) glass sitting out there exposed to potential damage.
Recommended with that reservation, and very disappointed with Sony.
Customer Service at Sony was not helpful and couldn't offer any suggestions.