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Multiple Exposure Frame Averaging for Ultra Low Noise, Improved Tonality
This page takes a detailed look at frame averaging and how it can improve pixel quality with the Sony A7R IV at ISO 100. Conclusions and tips are included for those looking to raise their game on the image quality front.
This meticulous study addresses both pixel shift and single-shot multiple exposures. The findings here apply in general to any camera, excepting of course Sony specific behavior, which is noted.
While noise with the Sony A7R IV is well controlled, there are very large benefits to be gained with some images, particularly those with a wide dynamic range, and with minimal effort. For those looking to make very large prints, the extra effort (not much) can mean being able to sharpen more and scale up more with minimal artifacts becoming noticeable nearly as soon.
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Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.
Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.
- Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
- Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
- Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning—best practices and how-to and processing parameters are discussed and shown.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops.
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
- 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.
Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Sony.
