B4 Mount Lens Question

[Steslat]

Im looking at getting a B4 lens for the AF101 with 2 x extender, I am aware that you have to use the extender and also the light loss but my question is do the lenses have to be made for widescreen cams? I ask as there are quite a few older B4 mount lenses around and some coming of older 4:3 cams, may seem a dumb question but does it matter?

Steve

[Paul F]

Im looking at getting a B4 lens for the AF101 with 2 x extender, I am aware that you have to use the extender and also the light loss but my question is do the lenses have to be made for widescreen cams? I ask as there are quite a few older B4 mount lenses around and some coming of older 4:3 cams, may seem a dumb question but does it matter?

Steve

I assume you are asking if SD lenses will vignette. No, they won't. The Canon J series and the Fujinon A series, with 2x extender, will work fine.

[Rowy]

I had an older Fujinon 5.5-47 BEVM wide angle that was made before 16x9 became the norm and even with the doubler it vignettes. So test before you buy if you can.

[Mitch Gross]

An older 4x3 only less may not cover. Wasn't designed for that image area.

[David W. Jones]

I can remember shooting with the SDX900, and the difference between older SD B4 lenses and the newer HD lenses was apparent.

[Muttondraw]

The Fujinon A5.5x8.5 has 1.7x extender and not a 2x, which would explain why it vignettes

[John Foundas]

I assume you are asking if SD lenses will vignette. No, they won't. The Canon J series and the Fujinon A series, with 2x extender, will work fine.

I was surprisingly pleased with the results I got with the Canon j21. I had concerns that using a non-hd lens on this cam would be suspect. Not at all. Very nice detail, sharp and warm.
https://vimeo.com/44491536