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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
Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-14-2018, 07:56 AM
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 davidmanze - 07-14-2018, 11:24 AM
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 davidmanze - 07-18-2018, 09:55 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-19-2018, 04:34 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-19-2018, 06:09 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-19-2018, 09:35 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-19-2018, 11:40 AM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by davidmanze - 07-19-2018, 02:40 PM
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 davidmanze - 08-02-2018, 06:15 PM
RE: Lenstip review of the Sigma A 105mm F1.4 HSM. - by miro - 08-03-2018, 12:23 PM

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