FastRawViewer Developers' Blog

When In Doubt, Bracket!

Golden Tree. Exposure Bracketing

On any photographic forum, it doesn't take much effort to find old or new discussions on how to set the “proper” exposure while shooting, and even what exactly “proper exposure” is. The question of setting exposure was and is one of the most commonly-discussed topics on forums and blogs

Often, an experienced professional photographer will, upon hearing the question of how one should choose exposure while shooting, respond that you should “Bracket your shots when the lighting conditions are complex. Or, even better, bracket all of your shots. I do it all the time.” That’s because problems with exposure are not something that only a novice can encounter.

FastRawViewer 1.3.6 released

Main Changes

  • A complete re-write of Folders handling routines
  • Fixed memory leak happening while browsing Foveon raw files
  • Implemented an additional integrity check for Samsung NX raw files

Camera support:

  • Olympus E-PL8
  • Sony RX100-V
  • Sigma sd Quattro (JPEG previews only)
  • Canon 80D/5D4 sRAW/mRAW

Please read more for download links.

Color Differences Between Cameras

RawDigger. Placing a Grid

Quite often, when a new camera emerges on the market one heavily-discussed subject is if the color it records is the same, better, or worse compared to a previous model. It often happens that the color is compared based on the rendering that some RAW converter provides. Thus, an unknown variable, that being the color profiles or transforms that a RAW converter uses for these particular models, comes into play. Yet another problem with such comparisons is that they are usually made based on shots taken with different lenses, under different light, and with effectively different exposures in RAW (while the exposure settings may be the same).

Let's see how cameras compare in RAW if the set-up is kept very close to the same and the exposure in RAW is equalized.

FastRawViewer 1.3.5 released

FastRawviewer 1.3.5 Beta. Supports macOS Sierra

As always happens with new versions of operational systems, some important functionalies of macOS Sierra are buggy: binary data is stored incorrectly in the defaults.

This affects the storing of non-integer parameters in FastRawViewer.

To work around this issue, we are releasing FastRawViewer 1.3.5.

This release also addressed some minor problems, so the Windows version has also been updated.

As usual this update is free for those who has already had previous versions of FastRawViewer.

Available at the download page.

FastRawViewer 1.3.4 released

FastRawviewer 1.3.4

We are happy to announce the release of FastRawViewer 1.3.4!

As usual this update is free for those who has already had previous versions of FastRawViewer.

Available at the download page.

Camera support:

  • Canon 5D Mark IV
  • Gitup GIT2
  • Nikon D3400
  • Pentax K-70
  • Panasonic G8/80/85
  • Raspberry Pi (V1 and V2 camera modules)
  • Several Sony and OmniVision sensors used in Android phones (in Android sensor dump raw format)

DIY Reliable, Cheap, Easy-to Use Universal White Balance Reference

Libraw White Balance Reference DIY Project

DIY projects are always popular, so we’ve decided to throw another one into the mix. This particular little idea comes from a problem that many photographers have – where do you get a good, small, white/gray surface to use for white balancing your RAW shots in conversion?

We’re proposing a solution that will save you time and money, as well as make you feel good for not buying into some inefficient, overpriced product of limited usability.

So, welcome to LibRaw’s Wacky Cheap 5-Dollar DIY White Balance Reference Project.

FastRawViewer 1.3.4: Beta Version with Canon 5D Mk IV Support

FastRawviewer 1.3.4 Beta. Support for Canon 5D Mark IV

This is a stable Beta featuring support for:

  • Canon 5D Mark IV;
  • Gitup GIT2;
  • Various sensors found in Android devices

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

Why do you want, or, as a matter of fact, not just want but need to look at RAW and not some previews rendered in some arcane manner when you’re choosing RAW files for conversion or presentation? Why, in fact, shouldn’t you trust neither embedded nor rendered JPEGs/previews, nor the preview / histogram on the back of your camera, for that matter?

We will both answer these questions, and illustrate the massive disconnect between a preview and real RAW data.

Unfortunately, photographers are throwing away perfectly good captures while keeping captures that are sub-optimal, because they are not being provided with the facts about the RAW. We are going to demonstrate why they need to examine actual RAW data before making any decisions about which captures to keep or consider editing.

FastRawViewer 1.3.3

FastRawViewer 1.3.3

We are happy to announce the release of FastRawViewer 1.3.3!

As usual this update is free for those who has already had previous versions of FastRawViewer.

Changes include:

  • Added "big" steps to the Exposure Correction tool for greater ease of use;
  • Added support for new cameras;
  • Fixed various bugs;
  • and more.

Available at the download page.

How to Use the Full Photographical Dynamic Range of Your Camera

FastRawViewer. Optimally exposed RAW

Suppose you've read somewhere that the dynamic range of your camera at a certain ISO setting is 11 stops. And here comes the immediate question – how can one use such a treasure to its full potential? Optimal exposure for RAW is the answer. But now we need to explain what we mean when we say, "optimal exposure for RAW".

Let’s start with one of the problems, which arises as a result of non-optimal exposure for RAW.


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