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C
chenly
Holy small display, Batman! The charts are, again, f/5.6 on the left and f/8 on the right; from left to right, each vertical line represents ten mm, so two-and-a-half lines from the left is equal to a 35mm lens MFT chart. The top pairs of lines in each chart are at 10 lines/mm, the middle pair at 20 lines/mm, and the bottom pair are at 40 lines/mm. Many other manufacturers not only publish only 10 lines/mm and 20 lines/mm, but, as above, they do not use production lenses as Zeiss does. People, please post a ~250mm lens' MTF which matches the above charts. There might me one, but I don't know about it. Prove me wrong!
C
chenly
If anyone is interested in the difference between sagital and tangenitial information, the two types represented by the solid and dashed lines in the above charts, just post below.
Regarding MTF, look at this sites http://home.online.no/~bjoesoe/brosjyrer/Spesial/S-Biogon_40-5.6_2_s.jpg
http://home.online.no/~bjoesoe/brosjyrer/Spesial/S-Orthoplanar_60-4_2_s. jpg
I think this S-Biogon and S-Orthoplanar is far better than all the rest. 25/50 and 100 lpm.
http://home.online.no/~bjoesoe/brosjyrer/Spesial/S-Orthoplanar_60-4_2_s. jpg
I think this S-Biogon and S-Orthoplanar is far better than all the rest. 25/50 and 100 lpm.
C
chenly
The first one looks like a fine piece of glass, but it has to compte with the Zeiss Biogon 38mm as in the Hasselblad 905 SWC and, as an interchangeable lens, for Arca-Swiss. Again, look for a ~250mm lens to stack up next to the Super 250. I don't know of any better, but, as before, prove me wrong!
C
chenly
BTW, the Biogon formula is considered to be one of the best wide-angle formulæ ever devised. The Biogon lens (lenses?) for the Contax G-series are superb, and the Biogon 38mm (see above) is acclaimed as probably the best wide-angle lens ever designed and manufactured.
Hi Chris,
sory for the small upload size within the forum, but bigger images a making the threads very slow over the time.
You will find also all MTF-Dta for Contax/Zeiss lenses in the scan section of this site. Please use the Adobe Acrobat Reader 5 (not 4) for this. You can download it in the same section too.
For Hasselblad/Zeiss MTF-Data, you can go to our sister site Hasselbladinfo.com or just click this linke:
http://www.hasselbladinfo.com/seiten/downloads.htm
and download them from there.
Hope that helps
Dirk
sory for the small upload size within the forum, but bigger images a making the threads very slow over the time.
You will find also all MTF-Dta for Contax/Zeiss lenses in the scan section of this site. Please use the Adobe Acrobat Reader 5 (not 4) for this. You can download it in the same section too.
For Hasselblad/Zeiss MTF-Data, you can go to our sister site Hasselbladinfo.com or just click this linke:
http://www.hasselbladinfo.com/seiten/downloads.htm
and download them from there.
Hope that helps
Dirk
... I forgot to mention that we will go online soon also with a Rollei site. For more details subscribe for the rollei newsletter on that homepage: www.rolleiinfo.com.
As usual, we will then also provide the MTF data for Rollei/Zeiss lenses there. I guess we have then all Zeiss lenses togehther
Dirk
As usual, we will then also provide the MTF data for Rollei/Zeiss lenses there. I guess we have then all Zeiss lenses togehther
Dirk
C
chenly
Oh, no problem. My only point is that, among ~250mm lenses, the Super 250 is, as far as I know, unbeatable from an MTF point of view. If there is a better ~250mm lens out there, I'd be interested to know about it, but I think the only contenders are the Canon 200mm f/1.8, the Contax 300mm f/2.8, and, of course, the Hasselblad Super 300, but, since this last one is ~$21,000 US, I don't really count it. The Contax is ~$13,000 US, so it's not really in the same league, either. The Canon is less than the Super 250, but I would only put the Super 300 ahead of the Super 250. Canon's MFT data for the 200mm f/1.8 are impressive, but they are not measuring actual production lenses the way Zeiss does. I have seen representative images captured with this lens and the EOS 1VHS body and they are nothing special.