Stepping down a lens to fake full-frame

[option click]

I've been trying out a Sigma 8mm Fisheye lens, however, the top and bottom of the image are cropped slightly due to the fact that I have a Nikon D200 which isn't full-frame.

Is there some kind of step-down adaptor which will reduce the size of the image to fit into the chip are, thus giving the effect of full-frame?

Thanks in advance.

[imperialism2024]

Wouldn't an 8mm lens be a digital-only lens that is designed for a DX-sized sensor, and would leave a black ring around the photo on a full-frame camera?

[beano500]

Eh!?

It's too hot for thinking about this.

Think you'd need a 6mm on a digital to replicate an 8mm - and no, i don't think there's any known adaptor.

Yes an 8mm would normally give a circular image even on full frame.....

Here - try one of these

Edited by beano500 on Friday 21st July 20:28

[graham@reading]

What he said..I can't get my head around it.

I've revisited the thread a few times to post something yet keep getting confuzzled

[option click]

Thanks for the replies.

I have looked into the Nikon 6mm Fisheye, but have gone no further down that route as I imagine the price will be prohibitive!

I've posted an image taken with my old Coolpix and an FC-E8 fisheye lens, which produced a full-frame fisheye image. Below it is a mockup of how the image using the 8mm lens on my D200 looked. As you can see, the image is cropped due to the DSLR not having full frame capability. I need to somehow get the effect of the Coolpix image on the D200.





I hope this makes slightly more sense than before!

*Edit - this guy managed it, but the solution looks quite cumbersome:
www.nearfield.com/~dan/Photo/wide/fish/

Edited by option click on Saturday 22 July 09:22

[beano500]

option click said:

I have looked into the Nikon 6mm Fisheye, but have gone no further down that route as I imagine the price will be prohibitive!

You'll need to think about whether it needs the mirror locked up or not!


Oh - and there you go, you've found out that in the link! Go for it!!!!