Author Archives: pvdhamer

Notes on a tutorial about image sensor noise

Posted on 25-Dec-10 by pvdhamer

During late 2009 and all of 2010, Albert Theuwissen published an 26-part series of postings on image sensor noise on his Harvest Imaging website. The series explores various sources of image sensor noise and their relationship to signal strength. The … Continue reading →

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DxOMark Sensor for benchmarking cameras

Posted on 5-Dec-10 by pvdhamer

DxOMark provides raw benchmark information for camera bodies (DxOMark Sensor). Although DxO Labs is a commercial organization, it provides its benchmark results for free because DxO needs to measure the data anyway (e.g. for their raw converter) and because it uses the DxOMark site to increase brand awareness. The measurements and graphs are incidentally not in the public domain, but can be redistributed under certain conditions. Continue reading →

Posted in Photo Technology, Photos | Tagged , , , | 26 Comments

Fotopedia – some missing guidelines

Posted on 27-Nov-10 by pvdhamer

The following are suggested extra guidelines for people who contribute or evaluate photos for Fotopedia. They are meant to support Fotopedia’s goal of being simultaneously an encyclopedia (well-documented, trustworthy) and aesthetics (coffee table book). The following are thus suggestions for … Continue reading →

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Fotopedia – statistics (2/2)

Posted on 16-Nov-10 by pvdhamer

Part 1 of this article provided some graphs showing the rate of growth of Fotopedia. The main conclusion was that the growth was steady (“linear” for geeks), but not enough to propel Fotopedia into the realm of the really well-known … Continue reading →

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Repairing an HP Photosmart B9180 printer

Posted on 30-Oct-10 by pvdhamer

The following text was posted to an HP B9180 user group @ yahoo. Unfortunately I didn’t manage to take photos of the inside of the printer. My 4y old B9180 started making horrible noises. The noise originated from/near with the … Continue reading →

Posted in Photo Technology | Tagged , | 6 Comments