It Looks Just Like The OLY E-PL1 Cut Filter
Well, in trying to keep up with the promised discussion on the Full Spectrum Infrared Conversion on the NEX-5, I wanted to share with you the information on its internal UV/IR Cut Filter (Hot Mirror). As you can see from the images shown here it is almost identical to the Olympus version found in the E-PL1 camera system.
As you can see it had a deep Aqua coloring on one side that is impregnated into the glass, this is the same as the LDP CC1 filter, and on the other side it has the gold sheen (B+W 486) applied to it only a molecule thick. Between these 2 filters/coatings you get a really tough IR cut filter that blocks most of the IR energy that tries to make it through to the sensor.
I am getting pretty good normal color images with this camera using LDP’s CC1 UV/IR Cut Filter in 52mm (again, why would Sony use 49mm filter threads?)