Step rings allow the attachment of different size filters and accessories to a lens. Step rings are available in step up and step down rings. To determine which type of ring you need, always start with the filter size that fits on your lens and then compare it to the filter size you want to adapt. If the filter size of the lens is smaller than the filter size that you want to adapt, then a Step Up ring is needed.
ExpoDisc, the original white balance filter gets even better. Set white balance, meter for exposure and dust map your sensor with the only calibrated and certified 18% transmission incident light metering filter.
We invented the digital white balance filter with the original ExpoDisc and established it in the market as the premium white balance tool by individually testing and certifying every ExpoDisc. Now, ExpoDisc 2.0 introduces user-selectable warming filters (gels), an improved mounting design, and a new lower price-point.
ExpoDisc 2.0 Features:
ExpoDisc 2.0 Contents:
• ExpoDisc 2.0 Professional White Balance Filter
• Comfortable Lanyard
• Sturdy Carry Pouch
• Calibration Certification Card
• User Quickstart Guide