On 10/24/2012 12:33 AM, Michael wrote:
On 2012-10-23 23:06:52 +0000, Me said:

On 24/10/2012 10:52 a.m., Michael wrote:
On 2012-10-23 21:22:16 +0000, Rob said:

On 24/10/2012 5:55 AM, Michael wrote:
I am looking into the Rokinon f/3.5 8mm fisheye for my D5000. The B&H
reviews look good and it is much less expensive than Nikon's 10mm
f/2.8.
B&H sells it for $299 without the focus confirm chip and $329 with the
focus confirm chip.

Does anyone have any experience with this lens?



When you use one of these lenses you don't need and focus confirmation.

It will pull just about everything into focus.

Some of the reviews imply (and I don't know wny) that the autoexposure
works better with the chip involved. I cannot understand why that should
be, though.
I suspect it's a typo / error in description.
Focus confirmation in Nikon bodies doesn't require a chip in the lens.
For AE to function on some Nikon bodies (below D7000 in present
lineup?), a chip is required to communicate the maximum aperture of
the lens to the body. Higher end bodies have a rotating ring with a
lug, coupling the aperture ring on the lens to the body.
Without the chip, metering won't work on a D5000.

Thank you. That answers the question regarding which version of the lens
I need. I still would appreciate a hands on review of it, if anyone has
it. Interesting about the rotating ring and lug. That sounds a lot like
what Nikon used 45 years ago with the Nikon F to set the maximum
aperture on the Photomic FTN metering heads. All the old NIkkor lenses
(I have them for my vintage F which has only the nonmetering prism) have
those lugs, which serve no purpose on the fully manual version of the F.
Also, the 5000 is one of the few Nikon DSLRs that can accept unmodified
non-AI F-mount lenses from the old Nikon F days. It requires full manual
exposure mode, of course. But the lenses do mount and do focus and do
take good pictures.


I still use some of my old lenses on my D300. Particularly, the 200
Micro, and 50mm f1.4. Bpoth circa 1872, or thereabouts.

--
Peter