Imagery: Auto - Large Table of Contents

EXCERPT page containing first few paragraphs. 2019-05-19 10:39:36
UA_SEARCH_BOT_null @ 54.167.47.248

Sony A7R II

Long Exposure Noise Reduction On/Off at ISO 100, with Push, Chroma Noise Reduction (Egg-Shaped Boulder)

This test assesses noise with a 30-second exposure both with and without long exposure noise reduction (“LENR”).

Long exposure noise reduction uses dark frame subtraction, so a 30-second exposure requires a 30-second additional exposure with the shutter closed, doubling the total time.

In addition, results with Adobe Camera Raw chroma noise reduction are included to add additional useful impressions of how far the files can be taken.

Even with the 30-second exposure, the image is underexposed by about 4.5 stops (the A7R II has no means to time anything longer, with manual timing with Bulb). A 3.3 - 3.5 stop push along with a +100 shadow boost is employed, to push the file to its limits. This is a challenging case which reveals the sensor quality and perhaps even more the quality of the camera processing algorithms.

Article continues for subscribers...

Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!

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.

Variants LENR OFF, LENR ON available in full article

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.