We used 90mm which is equivalent to around 44mm and hence there is still wider angle than our standard 50 at D700. It explains the small perspective difference and the little inconvenience to get rid of he rim of the curtain while using D700 50 lens was of no problem at all at the same position at that time. We used 127 for the first week though. 110 equivalent 53, 125 equivalent 62. I didn't do the proper lens research until now, another hindsight!
There are a wide variety of lenses available for the RZ67:
◦ 4 wide-angle lenses:
37 mm f/4.5 Fisheye, the widest RZ lens ever produced, 18 mm equivalent in 135-format
50 mm f/4.5 ULD L, 2 versions (the older one is inferior in terms of contrast and resolution, the ULD version has an additional floating system focus ring), 24 mm equivalent
65 mm f/4, two versions (the second one has a floating element), 32 mm equivalent
75 mm f/3.5, with floating element, 36 mm equivalent
◦ 3 normal lenses:
90 mm f/3.5, 44 mm equivalent
110 mm f/2.8, smallest of the RZ lenses, also has largest aperture, 53 mm equivalent
127 mm f/3.5 and an older model f/3.8, 62 mm equivalent
◦ 8 telephoto lenses:
150 mm f/3.5, 73 mm equivalent
180 mm f/4.5, 87 mm equivalent
210 mm f/4.5 APO, apochromatically corrected design, 102 mm equivalent
250 mm f/4.5, 2 versions (newer one is APO), 121 mm equivalent
350 mm f/5.6 APO, 170 mm equivalent
360 mm f/6.0, an older lens, 175 mm equivalent
500 mm f/6 APO and an older model f/8, longest of the RZ lenses, 238 mm equivalent
◦ 6 specialty lenses:
75 mm f/4.5 Short Barrel, possible to use with a tilt/shift adapter for perspective and focus plane control, needs an SB spacer for normal 75 mm use, 36 mm equivalent
75 mm f/4.5 Shift, perspective control lens, needs manual cocking of the shutter, 36 mm equivalent
140 mm f/4.5 Macro, two versions (the newer one with floating element system), able to shoot 1:3 without extension tubes or bellows and 1:1 with extension tubes 1 and 2, 68 mm equivalent
180 mm f/4 Variable Soft Focus, uses three interchangeable diffusion and spherical aberration disks for soft effect, 87 mm equivalent
180 mm f/4.5 Short Barrel, for tilt and shift adapter, needs an SB spacer for normal 180 mm use, 87 mm equivalent
100-200 mm f/5.2 Zoom, the only RZ zoom lens, 48-97 mm equivalent
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