EXCERPT page containing first few paragraphs. 2019-03-24 15:27:31
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The 90/2.8 is a high grade optic, one of the very best available for Pentax, and it includes optical image stabilization. It performs exceptionally well at infinity focus in spite of being a macro lens.
With macro focusing and image stabilization and high optical performance, it makes a terrific general purpose lens and might well be the best lens in the Pentax 645 lineup.
Nominal except as noted.
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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.
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- 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.