News

The Three Most Obvious Reasons to Look at RAW and Not Cull Based On Previews

"...Really, why do you even want to look at RAW files? The whole point of RAW is to be processed according to your taste into a JPEG. I never look at RAW files; I never need to. They are loaded into LR, processed, and I look at the processed images.”

FastRawViewer. Pink azaleas. JPEG prevew vs RAW

So here's a question - is it really necessary that one look at RAW when you're selecting RAW files, whether to convert or to present? Isn't a preview enough? You might not know exactly what settings were applied to it, but so what? What's so untrustworthy about embedded and rendered JPEGs and previews? And what's wrong with the preview and histogram on the back of the camera?

All these questions and more will be answered, and we intend on top of that to show how large of a gulf there is between real RAW data and the previews of it.

Very often images that are technically fine are being tossed out, and technically inferior ones are kept. Why? Because people aren't shown the truth about RAW. Here, we intend to show why people need to see and analyze actual RAW data, in advance of choosing which images to discard and which to keep and edit.

How to Use the Full Photographical Dynamic Range of Your Camera

FastRawViewer. Optimally exposed RAW

Consider the following scenario - you've just found out that your camera, at a certain ISO, has a dynamic range of 11 stops. Now, that's all well and good, but how does one go about using all 11 stops? It's not an automatic process, after all. Our answer? Expose optimally for RAW.

To elaborate on that a little, let's start by showing you the consequences of non-optimal exposure for RAW.

Dealing with Damaged RAW Files

FastRawViewer. Damaged shot. RAW. Zoom to 24%

"Last weekend I took a 360 deg panorama and on processing the files discovered two frames had the partial magenta coloring.

There does seem to be a problem with the green channel but with the tools I have I can't get my head around it. Looks like I will have to contact Canon."

This article may seem as if it's about a curious incident, like a musing. However, it actually has very practical ramifications and uses to a photographer. Raw data damage can be symptomatic of an underlying problem, and a glance at the raw data can give one the facts that one needs to inform a company that your camera body has problems that need fixing.

Deriving Hidden Baseline Exposure Compensation Applied by a Raw Converter

ACR Process 2010 Default Settings

As we already mentioned in the previous article “Forcing a Raw Converter to Render Tones Accurately”, most raw converters apply some hidden adjustments to a raw shot, often resulting in a bumped mid-tone, clipped highlights, and compressed shadows. This is done to make the shot look good, but can also lead to all sorts of confusion.

Here, we intend to show you how to determine what sort of unseen exposure correction is being applied to your raw shots by your raw converter.

Forcing a Raw Converter to Render Tones Accurately

"What happens to my mid-tones? I set exposure using exposure meter; open the shot in Adobe Lr (or Adobe Camera Raw, or some other converter) - the shot looks overexposed and everything starting from mid-tone and up looks very flat. If I shoot RAW+JPEG, JPEG looks OK, while RAW is not. Should I expose lower?"

Df_CT02.NEF in ACR - image looks overexposed and flat on the higher tones

Please don't lower the exposure, you will be underexposing by more than 1 stop additionally to the underexposure due to camera meter calibration. Not a great idea, especially if the light is low and you are already above ISO 400.

Instead, change the default settings in your raw converter (read on for a suggestion) or adjust on a per image basis. Having customized defaults, however, will save you a lot of time down the road.

RawDigger 1.2.9

Changes/New features

  • Fixed bug in Linearization table processing for Linear (interpolated) DNG files
  • Fixed bug in Sigma Quattro low-sensitivity pixels interpolation for pixel values below black level
  • Camera support added:
    • Sony ILCA-68 (A68)

RawDigger 1.2.8

Changes/New features

  • New setting Misc Options - Use small fonts in information panels Decreases the font size and shrinks the gaps between the informational panels in the upper part of the program window. Useful for the lower resolution displays.
  • EXIF informational panel re-worked
    • it is not modal anymore, does not stay on top, and a new file can be opened without closing the EXIF panel
    • [EXIF] button opens the EXIF panel; if, however, it is already open, pressing this button brings the panel to the top

Pages

Subscribe to Site news