> On Thu, Feb 9, 2012 at 5:57 PM, Tom C <[email protected]> wrote: >> Continuing the side discussion on the D800E... it does have a low pass >> filter, but apparently not an anti-aliasing filter. The 800E low pass >> filter, being ostensibly in lower demand, commands a higher cost. >> >> http://www.imaging-resource.com/PRODS/nikon-d800/nikon-d800A.HTM > > Reading the description, it sounds to me like the two offsetting OLPFs > are present to ensure the same amount of refractive material in the > optical path. That allows them to make the 800 and 800E mechanically > identical (i.e. the sensor in the same position). It's sort of like > telephoto lenses with rear filters... if you don't want to use a > particular filter, you need to have a clear filter in place because > the lens is designed with its refractive properties in mind. > > "In this way, the light has the same optical path through the LPF/IR > filter stack as in the standard camera, but the effects of the first > LPF layer are undone by the second. If the characteristics of the two > LPFs are exactly opposite each other, the net result is the same as if > there were no LPF at all." >
Yes sounds like a clever solution and apparently in-camera firmware is optimized to detect moire and minimize it. It's been reported that demand has outstripped initial supply (for the D800, unsure about D800E) and that pre-orders have stopped. Though I don't see that in evidence at B&H. Tom C. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
