5cm f/1.4 lens

[VinceC]

I think with an F/2 lens like the Jupiter that your depth of field covers the mismatched focus. About 15 years ago, before I was aware of this whole problem, I shot several rolls through a Jupiter 8 using an S2 and don't recall any focus issues. Pretty lens, but mine (a 1957 version) was prone to bad flare (actually, a very distinct ghosting of the aperature blades) and absolutely needs a sunshade.

 

[furcafe]

I'm not sure there's much of a boke difference between the 50/1.5 Sonnar & the 5cm/1.4 Nikkor-S, @ least wide-open. As I've stated before, I think the 2 lenses have pretty much the same optical signature. If a busy background gives a "swirly" background w/the Sonnar, I've seen the same w/the Nikkor-S & vice versa. I'll have to look through my archives for more examples, but here are 2 wide-open shots taken w/a c.1941 T-coated Carl Zeiss Jena 5cm/1.5 Sonnar where the background was a little busy:

http://static.flickr.com/16/20379338_24589040c5_o.jpg

http://static.flickr.com/15/21232167_3d4974bc25_o.jpg

There is the possibility that the Nikkor-S is closer to the pre-WWII & post-WWII Jena Sonnars, but I haven't noticed any big boke difference w/the W. German Sonnars. Again, I'll have to look through my archives, but here's an example from a c.1950 Zeiss-Opton 50/1.5 Sonnar:

http://static.flickr.com/22/27497642_6280cd28cd_o.jpg

 

[Sonnar Brian]

One of my Favorite's with the Nikkor 5cm F1.4.

http://www.rangefinderforum.com/photopost/showphoto.php?photo=1606&cat=3204&page=5
Some More.
http://www.rangefinderforum.com/photopost/showphoto.php?photo=1607&cat=3204&page=5
B&W, Wide-Open
http://www.rangefinderforum.com/photopost/showphoto.php?photo=2323&cat=3204&page=2

Outdoors, wide-open, shows the "doughnuts" in the busy background.
http://www.rangefinderforum.com/photopost/showphoto.php?photo=3072&cat=3204&page=9

If you want smooth Bokeh, get the 8.5cm F2.
Wide-Open.
http://www.rangefinderforum.com/photopost/showphoto.php?photo=1089&cat=3204&page=2

 

[VinceC]

>>If you want smooth Bokeh, get the 8.5cm F2.
Wide-Open.<<


Agreed.
Photo of my 5-year-old holding an S2 with a Sonnar, taken by 8.5cm wide open.