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Optical Low-Pass Filter Removed From 5D Mark III

Apr 2, 2012 by Udi Tirosh Add Comment

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Looks like today is hacking new cameras day. After the unobtrusive $30 WiFi hack for the D4 comes a much braver hack for the 5D MKIII. Film maker James Miller was brave enough to break open his brand new 5D MKIII and removes the anti aliasing filter (or Low Pass Optical Filter – LPOF) from his camera.

The anti aliasing filter serves an important function in the camera’s digital workflow. It removes some of the “real world” data so it matches the resolution of the camera sensor. This artificial “downgrade” contributes towards a smoother image.

But anything comes with a cost, and the cost of using an Anti Aliasing filter is decrease in resolution.

Optical Low-Pass Filter Removed From 5D Mark III

So, here comes James Miller and surgically removes the anti aliasing filters from his 5D mkIII. On the plus side the modified Canon now produces drastically sharper movies. On the down side, he must have had a heart attack. On the down side, it seems that a piece of glass needed to replace the filter to prevent back-focusing.

The footage above shows some samples from the modified camera, EOSHD also shows stills comparison, and the image below show the OR while the patient was in.

EOSHD has a fair warning in place: please wait for this to all shake out. Don’t hastily modify your 5D Mark III without the necessary technical knowledge and research. Opening the camera voids the warranty and risks irreparable damage.

Interestingly enough, Nikon did announce the D800E with the anti aliasing filter removed.

Optical Low-Pass Filter Removed From 5D Mark III

Optical Low-Pass Filter Removed From 5D Mark III

Optical Low-Pass Filter Removed From 5D Mark III

Optical Low-Pass Filter Removed From 5D Mark III

Optical Low-Pass Filter Removed From 5D Mark III

Optical Low-Pass Filter Removed From 5D Mark III

If you wanna follow the story, you can follow James on his twitter and on his Vimeo account.

[James Miller removes optical low-pass filter from 5D Mark III for resolution increase / new footage via slrlounge]

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Related posts:

Sony’s New RX1R II Is A 42.4MP Full Frame Camera With World’S First Optical Variable Low-Pass Filter Selectively sharpen your photos non-destructively with a high pass filter mask In-depth 5D Mark IV Review – Probably not worth upgrading if you have a 5D Mark III Testing the ISO of Canon EOS R5 and R6 vs 1DX Mark III and 5D Mark IV

Filed Under: DIY Tagged With: Video

Udi Tirosh: from diyphotography.net

About Udi Tirosh

Udi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.

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Udi Tirosh: from diyphotography.netUdi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.

Alex Baker: from diyphotography.netAlex Baker is a portrait and lifestyle driven photographer based in Valencia, Spain. She works on a range of projects from commercial to fine art and has had work featured in publications such as The Daily Mail, Conde Nast Traveller and El Mundo, and has exhibited work across Europe

David Williams: from diyphotography.netDave Williams is an accomplished travel photographer, writer, and best-selling author from the UK. He is also a photography educator and published Aurora expert. Dave has traveled extensively in recent years, capturing stunning images from around the world in a modified van. His work has been featured in various publications and he has worked with notable brands such as Skoda, EE, Boeing, Huawei, Microsoft, BMW, Conde Nast, Electronic Arts, Discovery, BBC, The Guardian, ESPN, NBC, and many others.

John Aldred: from diyphotography.netJohn Aldred is a photographer with over 20 years of experience in the portrait and commercial worlds. He is based in Scotland and has been an early adopter - and occasional beta tester - of almost every digital imaging technology in that time. As well as his creative visual work, John uses 3D printing, electronics and programming to create his own photography and filmmaking tools and consults for a number of brands across the industry.

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