Easily compose in bright light and at eye level with the VF-51 External Viewfinder for the wide-angle Sigma dp0 Quattro Digital Camera. Optimized for the 14mm, 21mm equivalent, lens of the dp0, this Albada-inversed Galilean-type OVF offers a framing guide for accurate composition without the need for the rear LCD. Additionally, it mounts easily by sliding into the hot shoe.
I bought this viewfinder to with my Sigma Quattro dp0 originally. Turns out, it's more often in the hotshoe of my Leica M mount cameras paired with a 21mm lens. This is probably THE best 21mm external viewfinder on the market. Nothing else is this big, this clear and easy to use - especially with glasses. The frame lines are VERY bright, even in dim conditions. The bottom part of the frame lines feature a close distance line. I have found the frame lines to be very accurate with what the camera actually captures at most distances when comparing with the live view of my M10 on 21mm. The viewfinder is large enough that with glasses, you can still see what's happening outside your frame lines. No other option I have tried comes close to offering this. If you shoot 21mm often and you need an external, optical viewfinder, this one is it. Buy it, thank me later.
Paired with the DP0Q, you have a unique imaging device that surpasses all expectation. Over the past six months, I have purchased all of the DP Quattro cameras and their accessories. In the end, I have a system that matches my shooting style and image files whose descriptive power is hard to equal. I recommend it all without reserve.