why are there no "modern" super fast LF lenses?

[Old-N-Feeble]

Ok, the next I get will be dropped on your foot. I think that will change your mind.

Only if the financial loss comes from your pocket. if it comes from my pocket I'll take the broken bones.

[Bob Salomon]

Once the world supply of digi era babies arrived in the management work force began the trend of digital images as acceptable. Who needed real negative truth you could gather information from the image characteristics formed in the emulsion layer. When sortta OK is OK then real quality has no funding.

Not sure I follow this.

[Sal Santamaura]

Not sure I follow this.

Simple Bob. Yet another digital trasher putting down everything but film-based imaging.

[Bob Salomon]

Simple Bob. Yet another digital trasher putting down everything but film-based imaging.

Wish I could follow the reasoning.

[Corran]

6"/1.9 Dallmeyer Super Six I sold years ago weighed 3.5 pounds.

Did you sell it for 5 figures? I don't know who would actually buy this, and why:
http://www.ebay.com/itm/311152774528

[Bernice Loui]

How fast is "fast" ?

Beyond the DOF problem, there will be film flatness problems, camera alignment problems and more.
There are more than a few fast lens made that will easily cover 4x5 and larger. Once happened upon a 200mm f0.85 made by Diffraction Optics. This was one of the largest refractor optics I have EVER seen, figure no less than 50 pounds with barrel. Imaging the shutter and camera needed to support this monstrosity.

Fast LF lenses are out there, most were designed and made for the military specifically aero recon or night vision with image intensifiers.


Bernice

[Corran]

Also, I've found that some medium format optics cover 4x5. Figure out a solution for the shutter and you're good to go.

[John Kasaian]

Most get into large formats because they want to slow down

[richardman]

Most get into large formats because they want to slow down

Yes, 1/125 is 7 stops as fast as 1 sec. Just think how much faster it makes your photo safari be. Instead of hiking for miles, take minutes to set up the camera and focus on the ground glass and wait a whole second for the exposure, you can now cut the last part down to 1/125!! XD

[jbenedict]

I shot my HS 40th reunion this last summer with digital.(Nikon) I put them up in web resolution and, because I wasn't doing it for money, I didn't watermark them. I let everyone know that any photos they bought would be high resolution and the price was lower than a discount store (I took no cut myself). There were 150 people and I put 75 online including a beautiful group picture that looks outstanding at 16x20 and, of course, available smaller. Three people bought a total of five photos and, otherwise, downloaded the web resolution and put them on their phones. I talked to a couple of guys who also shoot groups and found that this behavior is kind of typical. Smartphone camera pictures are good enough. Wish I hadn't taken pictures and just enjoyed the party myself.