4-way Macro focus Rail Slider for Canon Nikon Olympus Start Price USD 39.99 Current Price USD 39.99 Time Left - Bid Count 1 Buy It Now Price USD 49.99 Reserve Price - Start Time Saturday, August 16, 2008 End Time Saturday, August 23, 2008 Location Oregon City, Oregon See more about '4-way Macro focus Rail Slider for Canon Nikon Olympus' Description mccoin007 Store 4-way Macro focus Rail Slider for Canon Nikon Olympus Description:The focusing rail is a vital piece of equipment used by professional photographers everywhere and will help you to take clear and sharp photos every time.Macro focus rail allows the whole camera to smoothly change position to be closer to the subject so you don't have to continually adjust the tripod position.A focus rail is an essential accessory for macro photography, which requires precise distance modifications While such changes are negligible for normal sized subjects, they can complicate matters for macro. Use of the normal focusing ring on a macro lens, or the single focus adjustment on the majority of bellows, can present problems due to the distance and magnification changing and affecting each other. What works far better is to pre-focus the lens manually at the approximate distance and find a means of moving the entire camera and lens in and out to fine tune things. A focusing rail is perfect for the task. Without it, you would be forced to constantly reposition your tripod, a tedious process guaranteed to frustrate.Used with a tripod. This quality rail is recommended for any SLR Digital or Film cameras and is compatible with most Nikon, Minolta and Pentax macro and EOS bellows, macro shot extension tubes, or macro lenses such as the Canon FD and FL.Specifications# Maximum adjustment distance: 15cm# One precision controlled focusing knob with locking function# Two tripod or focusing rail mounting holes# One tripod screw 1/4" (standard - fits most camerasPlease add $7 shipping in US. International buyers pay $15.     Place a Bid!