Opteka specializes in manufacturing special optical devices for the past several years, would like to take this opportunity to introduce a newly developed product called the "HD² Infrared X-Ray Effect See-Through Multi-Coated Filter". This filter makes it possible for you to see images that are normally invisible to the human eye. It sounds like science-fiction but it isn't; this fantastic new product has been developed using the most highly advanced optical technologies available. This filter will filter out 99% of light seen by the naked eye only allowing infrared light through so that technically the naked eye can see 100% black when the filter is in place. Multi-coating prevents light reflection, ghost light...etc, making images clearer and sharper. On your digital camcorder, turn the "Nightshot" function on - the naked eye cannot pick up the high contrast black, so with the infrared filter and Nightshot combination, for example, it will help you see in the images provided, that we 'accidentally' spilt some permanent ink on this document and the text is now impossible to read. However, when we attached the filter to our Sony 'TR250PK' camcorder, the writing is clearly legible through the ink - thus the x-ray effect! The Opteka IR Filter is also able to see through some types of clothes, for example, thin clothes, tight clothes, sundresses, swimsuits, sunglasses, and so forth. Be aware that this means that you can see a person's body or underwear through the external garment. In other words, this filter allows you to "see through" someone's clothes. You will be amazed with the power if you take the time to experiment and experience its capabilities for yourself. If you already have a digital camcorder with the Nightshot feature and are interested in experimenting with the X-Ray effect, this is by far the least expensive method, giving you the results you are looking for. Just screw on the filter, switch on the 'Night' feature, and you are ready to go!