Nikon P7800 / P7700 / P7100 / P7000 Exposure Compensation Ring

thingiverse

The old Nikon P8700 still is my favored compact camera due to its outstanding versatility and its compatibility with my Nikon SB-400 and SB-800 flashlights. But more often than not I readjust the exposure compensation wheel by accident (e.g. when unbaging) and ignore the warning LED while under conventional photographer stress, resulting in underexposed or overexposed takes. Being fed up with this situation I designed a ring around the exposure compensation wheel in both a blocking and a non-blocking version. The non-blocking version still allows compensation, but its surface has less friction than the original wheel, leading to less accidential readjustments. The blocking version is my favorite because the exposure metering of the P7800 is just right in 99.9% of cases. ==================================================================== Update 24 July 2021: Added .stl files and OpenSCAD source file data for P7000. I do not own a P7100 or P7700, so you have to meter and trial their exposure compensation wheel size (diameter and height) and cutout angle (for blocking version) yourself and proceed as detailed below. Don't give up, it is quite simple and easy! ==================================================================== The enclosed .stl files are tested on my printer (Craftbot 3), slicer (Simplify3D) and my P7800 and P7000. As the allowable tolerances are quite tight you may have to experiment with the 0.1 mm allowance of "r_inner" in the enclosed OpenSCAD source file due to your printer's or slicer's deviations. Not tested on P7700 and P7100. They may have slightly different wheel diameters and heights and different angles for the blocking segment. For the time being you will have to adjust the "r_inner", "blockingsegmentangle" and "z_size" variables in the enclosed OpenSCAD source file according to your measurements and create your own .stl file. How to do this in OpenSCAD: - Download and install OpenSCAD from openscad.org. - Launch OpenSCAD. - Open the enclosed .scad source file (File/Open), fit the size parameters at the beginning of the file according to your measurements and export the result as a .stl file (Desing/Render, then File/Export/Export .stl). - Slice the .stl and print a prototype ring. Test it with your P7700 or P7100, adapt the parameters if necessary and print another prototype until it matches your camera. See also my other P7800 / P7700 accessory: https://www.thingiverse.com/thing:4648011 And my Nikon F Mount accessories: https://www.thingiverse.com/thing:4696190 https://www.thingiverse.com/thing:4700159 https://www.thingiverse.com/thing:4705644