My family has recently moved 3 hours north of Portland to a rental in Brooklin, Maine (hence the dearth of images this summer!). Here’s a beautiful point of land in Blue Hill Bay and mere 15 minute hike from our house.
Now, if the 72 megapixel header in the title of this post got your attention, you’re probably wondering what camera sensor I have gotten my hands on…the answer is that it’s not a new sensor, but a true resolution enhanced image created from 5 bracketed tripod-stabilized images fed into PhotoAcute, a great program for the Macintosh that can give (roughly) a doubled resolution image. That’s double in each dimension, or not quite double, as my 21 MP image
only increased to 72 MP (a true doubling of resolution would create an 84 MP image). If I had the time to post the 5 bracketed images here as well, you’d see that the program did a great job of exposure blending.
More frequently, if I find myself at a spot and I have some sense that I might have a good image, I will take multiple exposures (PhotoAcute likes 5 or more) because in the back of my mind, I know that I can improve the image quality and size considerably using PhotoAcute. Also, it does a great job of increasing the dynamic range captured.
The downside is that processing five 21 MP images takes a LOT of time—about 8 minutes on my 3 year old 17″ Macbook Pro. It makes the cooling fans come on and it takes Lightroom3 a good few minutes to export a jpeg out of the 428 MB DNG file that PhotoAcute creates. Yes, it creates a DNG, which you can then touch up (if needed) in Lightroom 3.