Version 4 of PhotoRaw and PhotoRaw Lite are now available on the App Store. The new version is a full 64-bit rewrite of PhotoRaw, and takes full advantage of the speed of Apple's new devices. I've talked in previous posts about the speed advantages that 64-bit operation can bring.

If you haven't tried PhotoRaw since the first version of PhotoRaw and the iPad 1, you should try the new version on an iPad Air - you'll be surprised......

In my last blog post, I went all technical, and talked about how to use the SIMD hardware acceleration, otherwise known as NEON, on Apple's new 64-bit processor (aka ARM64, aka ARMv8-A) on the iPad Air and iPhone 5s.

But the question is, is it actually worthwhile? Writing code for a SIMD processor is hard at the best of times, and in this case the documentation is near non-existent, and Apple's compiler is buggy.

So this one is for the serious techies.

It's been widely publicized that the new iPad Air and iPhone 5s have 64-bit processors. What's not not so well understood is that the 64-bit processors can actually either run old 32-bit code, or new 64-bit code. If you run the new 64-bit code, you're running an instruction set that's quite different to the old one; it's not like it just got bigger registers.

Lloyd Chambers, of the diglloyd blog, recently published a review of the Nikon D800M in which he used AccuRaw Monochrome for raw processing. So what is AccuRaw Monochrome and why should you care? Here's the story:

By way of background, the D800M is a Nikon D800 that's been modified by the folks at MaxMax.com to remove the Bayer color filter layer on the sensor, creating a pure monochrome camera. So, no Bayer demosiaicing artifacts, beautiful tonality, etc, etc.
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For that have been looking for an opportunity to buy AccuRaw, it's 30% off on the App Store for the whole black Friday weekend, through cyber Monday.
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Author of AccuRaw, PhotoRaw, CornerFix, pcdMagic, pcdtojpeg, dcpTool, WinDat Opener and occasional photographer....
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