>>Now if someone would just make a chromogenic 800 speed B&W film so I can use the 15/4.5 indoors under low light.<<
What Al said above is right. You can handhold a 15mm lens at 1/15th of a second no problem and should be able to get away with 1/8th too. I once held a 17mm SLR lens at 1/4 for an outdoor nighttime shot, and the resulting 8x10 print was sharp.
Also, chromogenic film has a lot of exposure latitude. Though labelled for 400 speed, they seem to have richer tones at 200, can be exposed at 100 and do quite well at 800 speed, but with more noticeable grain.
Nikon S2, S3, S3-2000, SP, SP-2005 / Kiev 2a
Biogon 21/4.5; CV 21/4; CV 25/4; CV 85/3.5; the following Nikkors: 2.8cm/3.5; 3.5cm/1.8 (1956 and 2005 versions); 5cm/1.4; 8.5cm/2; 10.5cm/2.5; 13.5cm/3.5
Soviet lenses: Orion 28/6; Jupiter-12 35/2.8; Helios-103 50/1.8; Jupiter-8 50/2