While playing around with the K20d's "Multiple Exposure" feature (p. 103 manual) I accidentally discovered something. There is more to learn I am sure, but it is immediately clear that shooting multiple exposures greatly enhances image quality, even @ high ISO.
To demonstrate this effect, I have below 2 large crops, from 2 separate images, both of which were shot @ ISO 6400 on the K20, with identical exif i.e., same aperture, same shutter speed, %100 controlled lighting. The only difference is one of the images is the result of using the Multiple Exposure feature of the K20. With this feature, you can use up to 9 shots, piggy backed to create one image. But, to demonstrate here, I only took 4 shots for the ME image below. Having experimented, I am sure more shots bring even better results. Just look @ the crops (close to %100) @ 6400. I think this is interesting and it implies lots of potential. I am not sure how much it improves high ISO shooting, but it is by a whole lot. Also, even at 100 ISO, dynamic range and noise seems improved.
I would appreciate feedback from anyone who understands the ME tool, or from anyone who just wants to comment. I next want to see if this tool will allow me to ME @ multiple apertures. There is no post processing here.
Last edited by Jewelltrail; 09-25-2009 at 09:06 AM.