If I can shift topic a little away from tripods, this might be of interest to some. I've previously posted enthusiastically about my use of Mamiya RZ lenses on my GFX 100S/F-Universalis - I still think that they are great optics, but a back injury necessitating (successful!) surgery encouraged me to rethink the weight of my kit. I've interacted quite a lot on this with Rob de Loe, both as a fellow F-Universalis user, and for his encyclopedic knowledge of how to mix and match various parts to achieve outcomes somewhat outside the square. Long story short, with Rob's input, my standard 4-lens kit plus camera has dropped in weight from 6.3kg to 3.9 kg, a reduction of 2.4kg. The image below shows this lightweight kit with key components as follows:
- Tenba BYOB 10 DLSR insert - 418 g - fits easily into the top compartment of a Deuter back pack, leaving the bottom compartment free for coat, food, first aid kit, etc.;
- Camera body - 913 g;
- Universalis - 1492 g - note the safety harness, prompted by a past disaster that necessitated a trip back to the factory for repair - Quelle horreur!;
- Top right with rubber band to hold on the caps - SK Apo Digitar 35mm L-88 on recessed board - 269 g;
- Top left SK Digitar 47mm remounted into SK B0 mount on recessed board - 229 g;
- On camera - SK Apo Componon HR 90mm on standard M39 board - 197 g;
- Top centre - SK Componon-S 150mm and M39 adapter - 282 g;
- Hoods x3 - 82 g;
- TOTAL weight - 3.882 kg
If I want to fill the gap between the 47mm and 90mm lenses, I can throw in my SK Apo Componon HR60, which in its case weighs 146 g - it uses the same board as the 90mm.
Optically, these lightweights don't always all perform to 100% of the level delivered by their RZ equivalents, but the differences mostly don't approach photographic significance in most circumstances. The bokeh of the SK 90 and 150 doesn't match that of the RZ Macro 140mm - however, the Apo Digitar 35 is wider than my widest RZ, the 50mm ULD.
Overall, my back greatly appreciates the change, and my photography is able to continue in out of the way places, with at worst a sometimes barely detectable reduction in image quality.
Finally, chapeau to Rob de Loe, not only for his ever surprising mastery of innovation and adaptation, but also the willingness with which he shares it!
-John
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