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| p.3 #9 · Canon 17mm f/4L TS-E Custom Filter Adapter |
Mike K wrote:
Where you report 6-7mm shift available w/o vignetting , this is shift parallel to the direction of the filter holder slots? How much shift is available orthogonal to the direction of the filter holder slots?
Mike - sorry for the delay in answering the Q.
With just one spacer (enough to hold the 3.0 OD filter, for example) it is the ring that becomes visible at the limit (i.e in the corners) At that same point, a second spacer to hold a second filter, the spacer/slotmaker begins to show up sooner. These are all with the slots either parallel or at right angles to the ground plane. For example, with vertical slots, holding a polarizer 4x4 and GND, needing two slots, there's not much shift sideways in landscape mode, but you could shift up or down. I see this as a nice ability to use filters but getting shifts and filters together is quite limited.