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Files available for download: Download SunsetCalc With the Sunset Calculator program you can determine the precise time of sunrise and sunset for specified US locations. You can pick major cities from lists for each state, input latitude and longitude coordinates directly, or use the global positioning system (GPS) data from an attached GPS unit. Many GPS units can be attached to the serial port of a Pocket PC. Dedicated PPC sleeves, CF cards, and even integral GPS units (e.g. Garmin iQue 3600) are also available. Photographers often want to photograph the moon on the horizon at sunset a day or two before the official full moon. SunCalc determines upcoming full moon dates and allows you to set reminders so your PPC alarm will ring (and start SunCalc) a few hours before sunset on the day of (or a specified number of days before) the next full moon. You can also set the alarm to ring each for each month’s full moon. LensCalc is a PocketPC program for photographers - primarily those using digital SLRs and 35 mm SLR lenses. I wrote this for my own use in the field, particularly for shooting flower macros in Golden Gate Park. SunsetCalc (PocketPC Program) Download LensCalc Lastly, LensCalc includes a table of data on Canon and Nikon 35 mm lenses, including their weight, minimum focus distance, and filter size. You can select lenses from a list and see a total weight for the group, along with a list of required filter sizes. A unique feature of LensCalc is the ability to describe the plane of focus for tilt lenses, which allow rotation of the lens with respect to the film plane. This causes a much larger - and not terribly intuitive - rotation of the plane of focus. This results in a trapezoidal region of focus that can be turned nearly perpendicular to the film plane. This can give you tremendous subject isolation capability if you know how to control the lens. It includes a depth-of-field calculator with the usual parameters - lens, aperture, subject distance and circle-of-confusion diameter for those who don't accept the commonly used value of .035 mm. It also includes a width-of-field calculator for 35 mm lenses on digital SLR bodies that have smaller sensors than a 35 mm film frame. LensCalc (PocketPC Program)