SSW, subway edition

It has been over a year since I released the last version of Stone Steps Webalizer. The main reason being total lack of time - the other projects I'm involved in keep me busy day-to-day. However, I was not just about to give up on SSW, so a about a month ago I started looking for ways to continue the development. After some thinking, it dawned on me that every day I'm wasting about 40 minutes on the subway and I began looking for a netbook.

Cross type AF points in EOS 7D

My good old film EOS SII has just a single auto-focus (AF) point and can only focus on vertical or diagonal lines because its AF point had only one bar of photosensitive elements. New SLR cameras have cross type AF points that have two lines of photosensitive elements forming a cross, which allows such cameras to focus on vertical or horizontal lines.

MSN Messenger crashes on Windows 7 x64

A couple of weeks ago MSN Messenger started to crash on start-up on my Windows 7 x64 box. The message indicated an invalid memory access violation in WLDcore.dll. After a bit of searching on the Internet, I found a couple of pages that pointed to this registry value being the problem (the number at the end will be your passport ID):

DOF: 35mm vs. APS-C

I was always curious to see how different would be a scene captured on 35mm film and with a digital camera, so I dusted off my good old Canon EOS SII, bought a fresh battery and a few rolls of film. The tests described in this post were captured on FujiFilm ISO 160, color-balanced for daylight, which is the only low-sensitivity film the local photo store had in stock.

Crop factor vs. magnification

Crop factor is a term associated with sensors smaller than the standard 35mm film frame, which is commonly misunderstood, even by people who write for respectable sites, such as Luminous Landscape. Consider the Understanding the DSLR Magnification Factor article written by Nick Rains in 2002. In this article Nick writes:

‘Crop’ is a fairly good term – the imaging area is physically smaller. Less of the image circle projected by the lens is used, therefore it is a crop. The image remains the same size at the film plane for a given lens and subject distance – it is in no way magnified. It does, however, take up a larger proportion of the (smaller) frame and so it is easy to see why some people call it a magnifying effect.