There is no vignetting and you do not need to go into a special dx mode.
Tokina 10 17mm fullframe.
The tokina 10 17 mm is a full screen fisheye.
It has the same optics as the pentax 10 17mm but in a different body to fit nikon and canon.
Here we have a strange old lens originally designed as a fisheye zoom lens for aps c cameras it s also useful as a fisheye lens on full frame.
Sigma tokina fisheye lens on a full frame camera as you can see the tokina 10 17mm fisheye and sigma 15mm fisheye lens produce identical images on a full frame camera like the nikon d800 when the tokina is set to 15mm.
Tokina 10 17mm on a full frame dslr full frame shooters usually use a prime fisheye lens like a sigma 15mm or a fisheye with a teleconverter but some full frame shooters do use the tokina 10 17mm with a 1 4x teleconverter to gain the flexibility they had when using a cropped sensor camera.
It a one of a kind zoom fisheye lens not a wide angle lens.
First there was a version released with a fixed flower shaped sun cap.
It does not work with film cameras or full frame or 1 3x canon cameras.
The tokina at x 107 dx nh fisheye 10 17mm f 3 5 4 5 is a full frame compatible version of tokina at x 107 dx 10 17mm f 3 5 4 5 fisheye zoom lens with the original built in hood completely removed.
This is in contrast to a circular fisheye which makes a circular shaped image in which the corners are black.
Tokina lens f 3 5 4 5 at x 107 dx fish eye canon fit the tokina 10 17 mm fish eye zoom gives the photographer a 180 degree field of view with dramatic curvature of field.