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Raw Photo Processor (RPP) is a RAW converter, supporting almost all available digital RAW formats. Think of it as of a development machine in terms of film photography - first you have to develop your roll right, then do whatever you want with it. So this is NOT a full featured photo processing package, you will need Photoshop or some other tool to apply sharpness, cropping and so on, but you may use RPP for some very carefully picked amount of operations. It's easy to integrate RPP with other tools, f.e. it provides special export plugin for Adobe Lightroom

The main idea behind this application is to do quality more...

What's New

Version 4.7.2:
  • OS X 10.9 support
  • Added support for Canon 70D, SX50 HS; Sony A7, A7r, RX1R, RX100 II; Panasonic GX7, GM1; Olympus E-M1, E-P5, E-PL5, E-PM2; Fuji X-M1, X-E2, X-A1; Nikon D610, Df, D5300; Pentax K-3 (DNG only)
  • Interpolated image size is going to be bigger by 6 pixels in each dimension
  • Bug fixes


  • OS X 10.6 or later

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Raw Photo Processor User Discussion

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Liam_ARTH Member IconReview+56

Great free raw converter. Must have app for every photo addict.

Reply0 replies
Version 4.7.1
cherylrw Member IconComment+0

I can't get the application to work. It does not open at all - it crashes when I try to open it. Is there something I can do differently to fix this problem?

Reply0 replies
Version 4.6.0
DelportF Member IconReview+49

Two words: Top Notch !!!

Reply0 replies
Version 4.4.2
Karloscka Member IconComment+4

I'm just an hobbyist. In half an hour I became convinced. Real powerful and powerful. I made a donation.

Reply0 replies
Version 4.4.1
Jcraig Member IconReview+354

I've been using RPP in favor of ACR for the past couple of years and my images are much better because of it. The detail I've been able to recover from seemingly blown highlights is nothing less than extraordinary. Likewise, it's amazing what you might find within those shadows when working with RPP. It fits in nicely with my workflow when working with CS5, and with my 2011 MBP, performance is remarkable. I'm looking forward to working with RPP 64, especially after I upgrade to 8GB of RAM this weekend.

Reply0 replies
Version 4.3.0
Arvidtp Member IconReview+73

Excellent Raw processing - gets me much sharper and better colored images from my Panasonic GH2 than does iPhoto RAW conversion or the camera's internal JPEG processing! A little more noise, but I'd rather have a little more noise and a lot more sharpness than smudgy blahhhh.

It's a little slow to use because updates need to be done manually and take a few seconds to process each time (for a 16MP image on a 3 year old dual 2.4GHz MBP), but the improved image quality is totally worth it. RPP takes longer to compute than other RAW converters because it uses 32-bit floating point math rather than integer math with most others use - which is way more accurate and gives better color resolution. As a parallel, all modern audio software uses 32-bit float processing internally, despite using 16 or 24 bit integer input and output files, because floating point processing just keeps that much more detail. I totally want that fidelity in my images too.

I love that pretty much everything can be done with the keyboard - numerically or with arrow keys - rather than just with silly sliders.

Occasionally I have run into some bugs where certain controls get grayed out when they shouldn't be, but just restarting the app fixes this, and your last settings for the current image are saved and recalled when you open it again.

The other thing I'd like is the ability to have presets so you can just save the entire settings of an image and apply it to another as a starting point. You can do this if the images are in the same folder by setting a "directory default" setting - which is great - but I'd like to be able to save those for later too.

Reply1 reply
Version 4.2.3

oh - i see - you can save settings - it just requires a donation. Understandable.

EndoLab Member IconComment+95

Interesting, gonna give it a try.

Reply0 replies
Version 4.2.1
Lpacheco Member IconComment+4

I'm looking for a tool to convert CRW (Canon RAW from CHDK) to DNG. Can I use RPP for that?

Reply5 replies
Version 4.0.0

No. RPP converts only to tiff or jpeg.



B. Jefferson Le Blanc

Adobe provides the DNG Converter for free: http://www.adobe.com/support/downloads/detail.jsp?ftpID=4678. This will convert just about any RAW file, including Canon CRW files, to DNG. This is particularly useful for those who don't have the latest version of Photoshop and the Adobe Camera RAW plug-in. In addition, the DNG format preserves the RAW metadata, which is otherwise lost if you convert to TIFF of JPEG.

Likewise, Apple provides OS X native support for RAW files in iPhoto and Aperture. I can't imagine why anyone would use Raw Photo Processor unless they intend to do little or no editing of their images. Once you convert your RAW files to TIFF or JPEG, any editing you do to the converted files degrades image data and quality. If every picture you take is perfectly exposed and color balanced, this may not be a problem. For the rest, even iPhoto provides some useful photo editing tools that can take advantage of the RAW format - without degrading image quality.


The problem is that my CRW were created by a Canon S5 using CHDK. Adobe's DNG converter doesn't support them. I had read this before, but after you both recommended it I went for a try and just confirmed that my CRW's aren't supported.

B. Jefferson Le Blanc

There are other RAW file management apps, like Capture One, but it's rather pricey - and not very intuitive to use. There is a 30 day free trial available here: http://xchange.phaseone.com/Content/Downloads/CO5.aspx. Another well regarded app is RAW Developer: http://www.iridientdigital.com/products/rawdeveloper.html, which also has a free demo.

Alternatively, if you have a friend with Photoshop Lightroom 2 or Photoshop CS4, you could try using either of those to import and then export the files to DNG.

26cab40 Member IconComment+333

Seems to lack any support for .x3f or Sigma cameras.

Reply2 replies
Version 3.9.9

A shame!

From a fellow Sigma shooter.


I believe that the lack of Foveon support is because of the licensing requirements in dcraw, which I think this software uses. See the source code here:


Mischivo Member IconComment+51

This is a question to the developer. I have Mac OS 10.6 and RPP, for which I haven't yet donated-will Snow Leopard override your multiprocessor utilization limit? From what I'm noticing, the program seems to be using all four of my Mac Pro's cores to make adjustments.

Reply1 reply
Version 3.9.8

Without unlock code it will use 2 cores for conversion, with unlock code it will use all available. It may look like it uses more cores without the code though because Mac OS uses them for it's own needs to display progress bars and other UI elements of RPP. This is nice, but doesn't make conversion significantly faster.

Sorry for late answer - I've just noticed the question. I'd recommend to ask questions like this in email or in RPP support forum for faster turnaround.

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Version 4.7.0
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Version 4.7.0
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Version 4.5.0
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Version 4.4.2
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Version 4.4.1
> 5 13


Current Version (4.x)


Downloads 100,959
Version Downloads 6,220
License Free
Date 23 Dec 2013
Platform Intel 64 / OS X
Price Free
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