Intended for use in extreme close-up photography, the HVL-RLAM ring light produces effective lighting when shooting macro photography with your Sony a (alpha) DSLR digital camera. This is ideal when taking macro pictures of flowers, insects and other detailed close ups.â€¨â€¨Adjustable for 2 step light levels (low or high)â€¨. Switchable models (right/left) to control shadow effectsâ€¨. Attachable for 49/55mm lensâ€¨. Supplied 49/55mm Adaptor Ring and Flash Adaptor.