Hasselblad 250mm SA, @9.0 on Sigma SD1 Merrill Iso 400 1/800S monopod.CA testing shot.
This lens is heavy and imbalanced so handheld must be a tough task, some early shots showed this is a real not a myth.
Hasselblad CF 250mm SA, @8.0 on Sigma SD1 Merrill Iso 100 1/800s handheld, almost at MFD.This lens is avoided T* coating intentatively for IR focusing, result-in the color might different from other Zeiss T* though.
Hasselblad CF 250mm SA, @8.0 on Sigma SD1 Merrill Iso 100 1/500s handheld.
This lens showed the best correction ever.The 1st building about 500m and the 2nd tall is more than 2km away.
@Phillip Reeve, I tried to analyse all your pics of this lens at 4900X3264, all has too much compromised areas some still there at f/9.0.
For a landscape shooting the distorsions, CA and sharpness are the most wanted, beside that the resolution of the lens/sensor will guarantee the distant/back ground clarity/fine detail.That is why the high class lens has floating system, Apo (Apochromat), or SA (Superachromat), all that for correction of the optical faults, if no correction so the fault is there inevitable.Even that for marketing some lenses have APO mark like Apo-Lanthar 90mm or many Sigma APOs still produce lots of CA.
BTW, to analyse an image take the original size, it gives you a constructive look rather hearing a mutual diplomacy.