Speedbooster for S5

[PaPa]

Hey shooters, hope everyone is well. Been years since I've posted. Hope you've all been keeping your heads above water during this pandemic. I've done a quick search online and here but don't believe I've found what I'm looking for. I apologize if I missed it. I've got a Panasonic S5 with the lumix 24-104mm F4 lens. I shoot a lot of 4k 60p and have to film with a crop, but am wondering if there is a speedbooster that could take my full frame lens and "boost" it down to aps-c? That way I could get the full wide range of my zoom lens and provide a little extra low light. Ideally with the ability to communicate with the lens/body. Anyone else ever think about this? Has it been done?

Cheers!

 

[OnSet]

Though from a logical perspective the concept might work, my guess is that there ae a few too many hurdles to get past. The first one is that if you are trying to have both sides of the adapter with the same mount, you don't have the extra flange focal depth behind the lens (such as when speedboosting from Canon EF or Nikon F to Sony E mount or to MFT). Though perhaps possible to optically engineer, the glass would likely be significant and expensive.
Also, think about how few people would actually buy something like this - and then think about how unlikely a manufacturer is to sink the development $$$ into making it - and with a small market comes increased cost, so think about what an adapter like this would be worth to you - $1k, $2.5k, $4k? More?
Then suggest it to Metabones and Viltrox.

 

[PaPa]

Though from a logical perspective the concept might work, my guess is that there ae a few too many hurdles to get past. The first one is that if you are trying to have both sides of the adapter with the same mount, you don't have the extra flange focal depth behind the lens (such as when speedboosting from Canon EF or Nikon F to Sony E mount or to MFT). Though perhaps possible to optically engineer, the glass would likely be significant and expensive.
Also, think about how few people would actually buy something like this - and then think about how unlikely a manufacturer is to sink the development $$$ into making it - and with a small market comes increased cost, so think about what an adapter like this would be worth to you - $1k, $2.5k, $4k? More?
Then suggest it to Metabones and Viltrox.

Makes sense. Just been out of the game for a while and thought perhaps other's might have thought about something similar.

Thanks for your input!