Tag Archives: camera

Red UFOs during long exposures with Canon 24-104mm f/4L lens

When used for multi-minute exposures, a red flare can show up at the bottom of images taken with the Canon 24-105mm f/4L IS lens. It is due to an infrared LED used inside the lens. Low-itensity infrared light from this LED leaks to the sensor. Although the Canon 5D Mark II’s sensor is able to detect this, it should only show up on very long exposures around the lenses 24mm zoom setting. Continue reading

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Printing costs on the HP B9180 printer

A cost estimate of printing borderless A3 photos comes to about 2 € for the ink and 1.5 € for the paper plus (assuming lowest price suppliers). A full cost model should add an extra ammount between 0.5 and 3 € for the costs of the printer (excluding the ink that came with the purchase) and possible future head replacements. Continue reading

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Printer comparison: HP B9180 ↔ Epson R2880

A comparsion of the Hewlett Packard B9180 and the Epson R2880 pinters. The article is based on input from two users (myself and Sakke respectively) and was triggered by a “what to buy” question. Continue reading

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Canon 5D2 – black dot plague and its cures

The Canon 5D Mark 2 had a high profile defect which caused small black dots to show up (under some circumstances) to the right of every bright spot. This was fixed by a firmware upgrade. Continue reading

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Canon 5D2 – mode dial and target audiences

The Canon 5D Mark II’s mode-dial also has two separate ”fully automatic” modes for dummies: Full Auto (green, classic) and the new Creative Auto. So apparently Canon’s product managers didn’t want to rule out users who don’t even want to bother learning about shutter speeds and apertures.
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Canon Picture Styles and the 5D Mark 2

Picture Styles is a feature is present in Canon models sold in the past year or two. It impacts subtle post-processing settings: sharpness, contrast, saturation, and tone. The current opinion on the Internet appears to be that Picture Style settings do not change the pixels stored in RAWimages but are available as metadata for use by Canon’s post processing software, DPP. Continue reading

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Canon 5D2’s Auto ISO setting

The Auto ISO mode sets ISO values between 100 and 3200 ISO. Compared to what I am used to (no auto-iso at all on the Canon 10D) this is pretty convenient. But I noticed that Auto ISO has a strong tendency to go for 100 ISO. Continue reading

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