[Brightcolours]

http://www.venuslens.net/laowa-magic-for...erter-mfc/

Funny tidbits:

 

• They act as if it is a revolutionary product like the Metabones Speedbooster series was. But it is just a TC. With a different mount on each end.
  
• Also, they pretend it was possible due to the shorter flange distance. Hmmm, I wonder how my Soligor Teleconverter goes about shortening the flange distance of my Canon 6D.  :ph34r:
  

Nice to see this product, though. It will come in two flavors, Canon EF and Nikon F-mount. They call it "Ai" but that just means it won't support operating the aperture of G and the new "E" Nikkors. It is a 1.4x TC, so to make sense only the sharpest lenses need apply (why else use a 50mp MF camera?).

I do not see contacts for the shown Canon model, which would mean shooting wide open only?

 

 

[toni-a]

When full frame became within reach, some teleconverters were used to use crop system lenses on full frame, that was a miserable failure

[Brightcolours]

When full frame became within reach, some teleconverters were used to use crop system lenses on full frame, that was a miserable failure

Why exact;y was that a failure?

[toni-a]

Why exact;y was that a failure?

Dunno the true reasons but that practice didn't survive long, do you see anyone still using this combo, I am assuming it's mostly the presence of better performing affordable native full frame lenses, would you use EFs-17-55f2.8 +TC to have a 24-77f4 or the native 24-105 f4 IS, but again I am  just assuming 

[Brightcolours]

Dunno the true reasons but that practice didn't survive long, do you see anyone still using this combo, I am assuming it's mostly the presence of better performing affordable native full frame lenses, would you use EFs-17-55f2.8 +TC to have a 24-77f4 or the native 24-105 f4 IS, but again I am  just assuming 

To me it seems you made that practice up. I have not read anywhere about people using a TC to use APS-C lenses on FF in the transition period. 

There were no teleconverters on which you could mount the EF-S 17-55mm f2.8 IS USM, or other EF-S lenses.

 

That said, I see no issue with using my 1.7x (measured more like 1.6x) with my Ultra-Micro-Nikkor 55mm f2 which has too small an image circle on FF, or my modified EF-S 10-18mm f4.5-5.6 IS STM. With the former it crops away the dark corners, and with the latter it gives the lens' full range it was designed for in the 1st place.

[Rover]

To me it seems you made that practice up. I have not read anywhere about people using a TC to use APS-C lenses on FF in the transition period. 

There were no teleconverters on which you could mount the EF-S 17-55mm f2.8 IS USM, or other EF-S lenses.

 

That said, I see no issue with using my 1.7x (measured more like 1.6x) with my Ultra-Micro-Nikkor 55mm f2 which has too small an image circle on FF, or my modified EF-S 10-18mm f4.5-5.6 IS STM. With the former it crops away the dark corners, and with the latter it gives the lens' full range it was designed for in the 1st place.

Agreed, I never heard about that either. Some people I knew were using some crummy film (but naturally full-frame) lenses like the 28-90 or 28-105 with their 5D, maybe they were thinking that FF is a magic bullet that would have made even a bad lens like this shine. Of course none of that stuck, and before long they were all equipped with the likes of 24-105 or 24-70 L lenses.

P. S. What TC are you using with that Canon setup?

[Brightcolours]

Agreed, I never heard about that either. Some people I knew were using some crummy film (but naturally full-frame) lenses like the 28-90 or 28-105 with their 5D, maybe they were thinking that FF is a magic bullet that would have made even a bad lens like this shine. Of course none of that stuck, and before long they were all equipped with the likes of 24-105 or 24-70 L lenses.

P. S. What TC are you using with that Canon setup?

Soligor 1.7x C/D4 TC, quite a nice little TC.