FastRawViewer Developers' Blog

With the addition of support for Pentax, SonyPixelShift2DNG is now PixelShift2DNG

With Beta 0.9.8, we add support for Pentax, subsequently changing the name of the application to PixelShift2DNG.

In order to streamline the workflow with the raw shots taken in the Pixel Shift Multi Shooting mode offered by the Pentax K1(-II)/K3-II and Sony A7R-III cameras, and provide a way to use popular RAW converters for processing these shots, we’ve developed the PixelShift2DNG application, which now converts both Sony and Pentax shots taken in Pixel Shift mode to DNG.

The resulting DNG files can later be processed in applications like Adobe Lightroom / Camera Raw, CaptureOne, Iridient Developer, Luminar, and others.

PIxelShift2DNG. Beta 0.9

FastRawViewer 1.5.1 Beta: Canon CR3 format support

Finally, the support for Canon CR3 format has entered open Beta!

Camera support

  • Canon: EOS R, EOS RP, EOS M50, PowerShot SX70 HS, EOS 250D (preliminary support)

Kudos to Alexey Danilchenko for figuring out the CR3 format!

FastRawViewer 1.5.1 Beta

Spring Sale!

We would like to announce that we are having a Spring Sale!

We are offering a 25% discount on all products and packages.

Our Special Prices are valid until April 20, 2019.

Buy now!

LibRaw Spring Sale

FastRawViewer 1.5 Release

We would like to inform you that FastRawViewer 1.5 is released

  • TIFF/PNG format support
  • On-disk thumbnail cache
  • _Selected folder feature
  • Overlay grids
  • and other minor features and small bugfixes
FastRawViewer 1.5

ISO is Seldom just a Digital Gain

RawDigger. Raw histogram. Digital ISO 25600

Some say, "exactly like dragging exposure slider in Lightroom, ISO ... is just digital gain". With a few exceptions, this is less than a half-truth.

Though it is often the case that at higher ISO settings digital "gain" is applied (or a converter, using a metadata tag, is instructed to apply it), analog gain still acts first, before "digital gain" (the better word would be "multiplication", not gain, as in electronics "gain" most often pertains to analog domain).

The giveaway for multiplication is deep and regular gaps in the raw histogram that become wider with each increase of ISO setting.

A Curious Case of ISO Bracketing with Fujifilm X-series

A few days ago, a FastRawViewer user turned to us with a question:

"I took a series of photos with ISO bracketing, but FastRawViewer shows them all in the same way on the main window, even though the JPEG previews are different. I think you have a bug!"

In answering him, we suggested several reasons as to why this is happening, among which was the option that "It's possible that your camera doesn't even do anything when the ISO is changed".

The user sent us the files, and the result was...exactly that; the automatic change of the ISO setting while bracketing didn't affect the RAW data at all.

Time for Standards, stockbakery

FastRawViewer 1.4.12 Release

FastRawViewer 1.4.12

Camera support:

  • CLAUSS pix500
  • Fujifilm X-T30
  • Nikon Coolpix A1000
  • Olympus E-M1X
  • Sony ILCE-6400

Minor changes

FastRawViewer 1.4.11 Release

FastRawViewer 1.4.11


  • Faster thumbnail reading, especially on slow media/WiFi
  • Run program/Pass image in main menu/context menus has been reworked
  • (Windows only) New Preferences setting: Interface - Set the main menubar colors to match the main window.
  • New setting: Folders panel - gear menu - Show horizontal scrollbar
  • (Windows only) A warning is issued if 'pass image to external program' requires privilege escalation.

A Couple of Bugs Fixed

Red Flowers Photography: Real Problems or Deceptive Previews?

"...Images of red flowers sometimes don't come out very well, seeming oversaturated, and having little detail in certain areas.”

"...In some pictures of red flowers, I can see small white specs on the petals. On other shots, the entire flower appears flat, like one neon blob, lifeless and lacking volume; it can be quite disturbing."

"...When I'm shooting red flowers, I often have a problem: to save the red channel, I usually have to tell the camera to expose below what it considers to be the correct exposure. This results in overall underexposure in the rest of the scene..."

Maybe, the main problem is that the preview you see is not what you got?

FastRawViewer. Grid View. Red Flowers

FastRawViewer 1.4.10 Release

Camera support:

  • Fujifilm XF10, X-T3, GFX 50R, DBP680
  • Gitup G3 duo
  • Nikon Z7, Z6, P1000, D3500
  • Old Leaf cameras with RGB TIFF output (Cantare, DCB2, Volare)
  • Panasonic LX100-II
  • Sony HX99 (preliminary support)

New features added


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