Uber Whatsit #136

[480sparky41 41]

twist tie

 

[nycphotography]

BTW: How do you get the crazy colors? Do you have a SOC version you can share?

That looks like an AIS lens... but what's the cable sticking off of it and what's it connected to?

 

[480sparky41 41]

BTW: How do you get the crazy colors? Do you have a SOC version you can share?

It's a 14-frame focus stack. There's really no 'crazy' colors.... that's just how it really looks up close.

That looks like an AIS lens... but what's the cable sticking off of it and what's it connected to?

It's a reversed 28mm AIS with a BR-6 and cable release controlling the aperture. Since I'm shooting with a PB-6 bellows, there's no connection between the lens and camera to control the aperture. So I got an old 28 AIS for macro work, and reverse it with a BR2A when needed. To open & close the aperture, I use the BR-6 and a cable release. This allows me to focus & compose with the lens open, then close it down to take a shot. If I mount the lens 'normally', the bellows has that same function built into it.

 

[nycphotography]

With the bellows why also reverse the lens? Even fully extended you still can't get close enough focus distance?

 

[480sparky41 41]

With the bellows why also reverse the lens? Even fully extended you still can't get close enough focus distance?

Mounting the 28 'normally' give me a maximum reproduction ratio of 3.7:1. Reversing it takes me to 7.7:1.

 

[nycphotography]

I have three AIS lenses... a 50 f1.4, a 105 f2.5, and a 135 f2.8

Would those work, and get t similar reproduction rates, w/o reversing?

Or would I want to scare up a 35 and 28mm AIS lenses to go with it?

 

[480sparky41 41]

I have three AIS lenses... a 50 f1.4, a 105 f2.5, and a 135 f2.8

Would those work, and get t similar reproduction rates, w/o reversing?

Or would I want to scare up a 35 and 28mm AIS lenses to go with it?

Are you using a bellows?

 

[nycphotography]

I would probably start w/ tubes, and then try to find a bellows.

 

[480sparky41 41]

I would probably start w/ tubes, and then try to find a bellows.

Reversing a lens to increase the reproduction ratio doesn't work much until you start to get into focal lengths of 35mm and smaller. And reversing a 105 may actually reduce the RR. Reversing a 135 surely will.