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Lenstip review of the Sigma A 105mm F1.4 HSM.
#28
250mm in 6x6 is pretty much equivalent to 105mm in FF terms, if you crop the FF lens into a square. Otherwise 250mm in 6x45 format is significantly narrower than 105mm.

Hasselblad had a 250mm f/4 in their 6x6 V System. No built in leaf shutter but there are focusing elements inside the lens and it weighs 920 grams. It would be equivalent to a 110/1.8 cropped to a square in 35mm FF format.

They also had a 110mm f/2 monster, which is among the fastest medium format lenses ever created. Merely 750 grams and remember this is roughly equivalent to a 50/0.875 lens in 35mm FF terms, though again, if the said 35mm was cropped into a square format. Even if the 6x6 square image created by the 110/2 lens was cropped into the 6x45 format, it'd still be like a 70/1.27 lens in FF terms.

Like you've said, Mamiya lenses are not really as heavy because they are quite simple in nature. One of the fastest RZ67 lenses, the 110/2.8 weighs merely 610 grams. Even their 350mm APO lens is (barely) under 1.5kg.

I was thinking of the fastest and largest medium format lenses and even the monsterous Carl Zeiss Jena 180/2.8 for Pentacon Six, another 6x6 system, is at around 1350 grams.

Maybe he meant weight of medium format including the camera?

Still, the 1.6kg Sigma + a FF DSLR with a grip for more balanced holding would easily rival most medium format systems in weight, even some of the heavy metal monsters of the past.
  


Messages In This Thread
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-14-2018, 03:02 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-14-2018, 12:04 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-14-2018, 12:35 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-14-2018, 01:12 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-14-2018, 04:55 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by obican - 07-16-2018, 07:59 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-17-2018, 10:13 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-21-2018, 09:08 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 07-21-2018, 01:25 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 08-01-2018, 07:40 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 08-03-2018, 12:23 PM

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