What is coming in Digital Photo Calculator v.3?

DPC is long overdue for update and the new version is coming out soon with many improvements. What is coming? There are major improvements notably in the user interface design, in the Sun and Moon module and in the...

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Camera profiles for Lightroom and ACR

Adobe DNG Profile Editor and X-Rite ColorChecker Adobe DNG Profiler is available as a free download from Adobe.com. It can be used with regular X-Rite Color Checker Classic, X-Rite Color Checker Mini and with the 24-patch target of X-Rite Passport. X-Rite...

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SD card to computer performance

This post is a brief overview of read and write performance of several SD cards that may be of interest to photographers with cameras that do not take advantage of high performance of the latest SD cards, but who have newer computers with...

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Leica M startup delay

Most mid-level or better digital cameras have a negligible startup delay of around 0.2 seconds. Alas, Leica M startup delay is often measured in seconds, which may be a problem for some shooters and scenarios. Photographers on Leica related...

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Chromatic Aberration Removal in Lightroom

Lightroom 4.1 introduces new CA removal tool that addresses all types of chromatic aberration. The tool is very easy to use and does really good work. You can select automatic correction, use color picker to select the fringe color(s)...

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Lens profiles for ACR and Lightroom 3

Adobe Labs released Lens Profile Creator utility that enables creation of custom lens profiles for Photoshop CS5 (ACR 6.1) and Lightroom 3. This page contains profiles for some Zeiss ZE lenses for Canon EOS 5D II that I created using...

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Sharpening and Micro Contrast

Sharpening and micro contrast enhancement has been frequently used in film photography. This article briefly introduces similar digital and analog techniques. Digital Unsharp Mask Unsharp mask selectively increases contrast of edges and small objects by making dark...

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Canon EOS 5D Mk II Noise

Problem There has been some discussion about noise level of underexposed shadows from Canon EOS 5D MkII at ISO 100 compared to other FF cameras. I usually don’t have to push the exposure and find the problem theoretical, but I...

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Film vs. Digital

Many articles and posts on the Internet claim or disprove advantage of small and medium film format over digital. The two media are very different and it is not completely fair to look at digital with having film as...

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