 "DSLR Matte Box for 15mm Rail Rod System D90 5D 60D 600D, mattebox (Blue)" "Buy Photography and Camera Supplies from #1 Store in Dallas | Cowboystudio.com"
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This DSLR Matt Box is compatible with any standard 15MM rail system for your DSLR rig or cage. A matte box is used to help block the sun or other light source in order to prevent glare and lens flare.  Another purpose of a matte box is to hold glass or plastic filters in place in front of the lens." 
 "Transcend Ultimate - flash memory card 16 GB CompactFlash"@en, " Transcend CompactFlash "@en Prices CNET"@en