k 5 Filter came in a Fotoga box but I don’t think it is Fotoga brand. I purchased a 58mm filter to attach to my Sony DSC-F828 camera and it fits fine. You can use this camera in full spectrum mode, just search the internet for “Sony DSC-F828 magnet hack”I cannot use the camera’s lens hood due to the filter being too big on the outer end. This prevents the lens hood passing over it to go on/off the camera.Also the front of the filter is not 58mm like the rear, so I couldn’t attach my 58mm lens cap. The filter doesn’t mention what size the front filter size is, so I don’t know which size lens cap to buy!Using the filter at 530nm, the grass and leaves turn a blue colour when post processed in photoshop or other photo editing application (see attached picture). While at the 750nm end you get more black and white image with grass and leaves being white (not pictured).Do not buy unless you have a Full Spectrum converted camera! Otherwise you will be disappointed when it doesn’t work,