The Phottix TR-90 Multi-Function remote (PH18340) provides a simple trigger function and can activate the bulb function on Canon cameras. It provides such functions as a self-timer, interval timer, long-exposure timer, exposure count setting feature. It is a good replacement for Canon TC-80N3.

Pentax 37248 Cable Switch 205 for *ist D/DS, *ist 35mm & ZX-L, K-x Camera - 3.5