EXCERPT page containing first few paragraphs. 2019-03-25 05:58:55
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Dynamic range, the total usable range of dark to light, is generally a strength of medium format, with the Mamiya DL28 specifying 12-stops, a more or less state-of the art ability (12.5 stops seems to be the limit with the newest PhaseOne digital backs).
Testing dynamic range on a test wedge isn’t very interesting, or even realistic; sensors don’t necessarily perform the same everywhere on the chip; real images tell a much more interesting story, and for this an extremely demanding scene was chosen, almost unreasonably demanding—it’s a scene that calls out for HDR (high dynamic range) processing.
Default Processing examples
First, let’s take a look at the original image (1/2 sec @ f/11, ISO 50) processed three ways: Aptus-II 6 Product, Aptus-II 6 Open, and Aptus-II 6 Open @ -0.5 contrast. It’s obviously a very difficult image to work with, and even the naked eye found the contrast quite extreme.
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These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).
- In-depth lens evaluations covering behaviors not likely to be found anywhere else, based on real-world field shooting.
- How to configure menus and buttons and best operating practices, gotchas and how-to.
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens and camera behaviors.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to 28 megapixels filling up to 5K display, plus large crops.
- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
Curve = Aptus II-6 Product