cap there is a trick to nailing the exposures in bulb mode. Set your aperture to a decent value for depth of field (7.1 is where a lot of lenses are their sharpest), whack it on av, set the iso to 1600 and take a reading of the shutter speed required for a good exposure. Then set mode to bulb or manual or however your camera does it, set that aperture, change the iso back to 100, multiply the shutter speed that you recorded before by 16 and there you have it a decent exposure. Rough guide but with such lengthy exposures there is usually little light so nothing is going to blow the highlights too much but again depends on subject matter. Also ditchy with a remote you can lock the shutter in place with bulb exposure whereas 2 second timer youll have to hold your shutter button down the whole time, irritating and will lead to some blur. i have one of the ebay ones and theyr mad, but i want to get a remote timer so if i was you i would get the remote timer as your first one, way more creative freedom you can dial in how long you want the exposure (like 30 mins) so that you dont have to have a separate timer and stop after the elapsed time.