That was the problem, I used the ground glass to get close and then used
the hexagonal in focus indicator for fine focusing, the sensor locked in
on that very sharp twig just in front of the bird. I'm trying to decide
right now between Katzeye or Focusingscreen.com. One uses their own
technology, the other uses the best of Nikon and Canon MF screens, US or
Hong Kong, paper or plastic, 100 bucks with phone support, 80 bucks with
email support. I really do need a focusing screen with decent manual
focusing characteristics, as 3/4 of my lenses are manual focusing primes...
On 4/22/2014 3:11 PM, Bob Sullivan wrote:
Very nice catch.
I don't think the mirror lenses work with autofocus.
You need a split screen mirror or to use the ground glass.
Regards, Bob S.
On Tue, Apr 22, 2014 at 11:23 AM, P.J. Alling
<[email protected]> wrote:
I believe this is the same Cardinal from "The Victor!", having chased off
his rival. He moved to a different tree. I shot this with my Vivitar Solid
Cat. 600mm f8.0 hand held at 1/800 sec. It's pretty respectable for a
Mirror Telephoto, the only really noticeable ring Bokeh, visible is from a
branch quite a bit in front of the bird. While this is a pretty heavy lens,
it weighs more than the camera, (though not by much), it seems to be quite
hand holdable with the K-5II. This image is a crop of a bit under 1/3 of
the frame. I could probably make a decent 8x10 inch print from this file,
thought the branches in front of the bird mean I probably won't.
A couple of other observations, I really need a split image focusing screen
for manual focus, The K-5II thought something was in focus but the sharpest
object in the frame was the small branch just in front of the bird. I don't
know if it's from subject movement or being just a bit out of the limited
DOF from this lens, but the Birds head and eye are not quite sharp enough in
the full resolution file, though his breast feathers seem to be. The K-5II
files can take a lot of abuse before they begin to fall apart.
I always thought that the Series 1 Solid Cats were multi coated, but I
noticed that there doesn't seem to be any of the usual coating reflections
you see even with single and double coated lenses, and no mention of
Vivitar's vmc coating on the lens. Anybody have any information on that?
Well onto the photo.
https://dl.dropboxusercontent.com/u/1604247/PESO/PESO%20--%20theVictorII.html
Pentax K5II w/Vivitar Series 1 600mm f8.0 Solid Catadioptric Lens.
As usual comments are welcome but may be totally ignored.
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