Yesterday’s post trotted out an idea for producing moderate resolution files from high-resolution cameras without demosaicing, and speculated that such files might show higher quality and fewer artifacts than similar-sized filed down-res’d from demosaiced raw files. I looked around for a tool to perform an experiment. I didn’t have to look far. DCRAW has an… [Read More]
Archives for 2014
Color photography without demosaicing
In the beginning, digital photography sensors were monochromatic. If you wanted color, you made three successive exposures through different filters, which were usually mounted on a wheel for rapid sequencing. A variant of this approach was to use a series of prisms and half-silvered mirrors to split the imaging light into three beams which were… [Read More]
The Pentax 645Z
There have been rumblings for months about a new Pentax 645 based on the Sony 50MP 33x44mm chip that’s in the Phase One IQ250 and the Hasselblad H5D-50c. The buzz was that it would be cheap (for a medium format camera) and that Ricoh would put some marketing, service, and distribution wood behind the camera… [Read More]
How to expose the moon?
Last night’s lunar eclipse occasioned a flurry of web traffic about how to set your camera to expose it correctly. I got to thinking – not always a good thing – about the problem, and the more I thought about it the harder it seemed. Let’s assume that you’re making an image and you know… [Read More]
How much image quality is enough?
When we photographers capture images, how much quality should we strive for? A lot depends on how much we know about the eventual use of the image. Why not just strive for the highest possible quality? Once you say that’s your goal, you’ve signed up for very expensive equipment, the use of a tripod almost… [Read More]
- « Previous Page
- 1
- …
- 40
- 41
- 42
- 43
- 44
- …
- 62
- Next Page »