I took some time to reach out to one of my industry connections at Hasselblad to see if they had an official “payload” for the XCD bayonet and they do not, however he stated gave me the information on the lenses in the current lineup and a good place to start on more research on weight of V-mount lenses.
The other Pro Hassleblad adapter weighs 12.1oz (343g), the TLT Rokr weighs just under 9.8oz(278g.) The heaviest native XCD lens comes in at 3.02lbs (1372g), this is the 135mm/2.8 with the 1.7x teleconverter. So taking the weight of the heaviest setup that Hasselblad is offering with recommending additional support, as long as your lens is 1093g or less you will be within the range of acceptability. Most of the common lenses for the V-mount system come in between 610g and 980g meaning that they should not pose any issue. In doing my research I found 6 lenses that are above this weight, 4 of which are not likely to be used for standard tilt/shift photography as this is usually done with normal to wide lenses.
F-DISTAGON C T* 30MM F/3.5, 1365g with no tripod foot or collar standardDISTAGON C 40MM F/4, 1375g with no tirpod foot or collar standardTELE-TESSAR C 350MM F/5.6, 1350g may or may not have a Hasselblad tripod plate built in with 1/4-20 and 3/8 thread on bottom; tripod plate appears to be dependent on age/production runTELE-APOTESSAR CF 500MM F/8, 1810g with integrated Hasselblad plate as well as 1/4-20 and 3/8 connectionsTELE-TESSAR C 500MM F/8, 2100g, this lens has a mounting point on the lens for both 1/4-20 and 3/8 connections.SCHNEIDER VARIOGON CF 140-280MM F/5.6, 1740g, it appears that this lens was made with 3 (possibly more) different housings; one with integrated Hasselblad plate (that may or may not be arca swiss compatible), one with no foot (but it looks like here was a lens collar available for this version and one with 1/4-20 and 3/8 mounting points.
The answer to why we didn’t include a foot is two-fold. 1. A standard foot would limit the movements of the adapter when a lens is mounted. 2. Although there are a few outliers, the common lenses that are sensible for tilt/shift photography are well under the weight that the bayonet can safely support. The long lenses that may be used more creatively or experimentally already have mounting points, integrated plates or available additional supports.
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