Eureka! That's why I was under the impression that some DA lenses did
not have manual override! 99% of the time I'm in 'C' focus or
manual focus. When I am in 'S' focus mode, I'm trusting the AF to get
it right on a mostly stable subject.
Another disadvantage I just discovered was not being able to stand
steadily. Just shot a series of close-ups of equipment for eBay,
handheld, from a foot to three feet away with the SMC-A 50 mm macro. I
could not easily focus consistently, and was rocking back and forth in
an attempt to be still and shoot. Even with a monopod. So my solution
was to focus once, and wait until good focus appeared to be
approaching once more as I rocked, and shoot. My own predictive
autofocus with a manual focus lens.
Thank you for reading the manual for me. I never do get more than a
page or two at a time read in any manual before I'm bored or confused.
This list allows me to find out what the features are on my
equipment ...
:-)
P.S. Using a tripod was impossible in the space I had to work. It
would have slowed things considerably in composing and shooting dozens
and dozens of items of different sizes. I also found many had to be
reshot because they had a dog hair or two attached to the gear. :-)
On Apr 14, 2009, at 01:59 , John Whittingham wrote:
All DA lenses have Quick-shift focusing (manual overide) IIRC the
manual states it works in AF-S (Single) but not AF-C, my camera is
usually set to AF-C for the majority of the time I use it.
Regards,
John
________________________________________
From: [email protected] [[email protected]] On Behalf Of
Joseph McAllister [[email protected]]
Sent: 13 April 2009 23:00
To: Pentax-Discuss Mail List
Subject: Re: Difference between 16-45 and 17-70
I probably shot a few test shots after it was unpacked, but I use the
DA*16-50 on a regular basis for indoor and lower light shots.
I don't think any of the DA lenses that are shaft driven only have
focus override. I've tried on many occasions to do so, and it won't
move until you shift the camera body into manual, which retracts the
drive shaft.
The 17-70 seems to have focus over-ride, but if you move the collar
very far at all with the release button half way, the motor forces the
image back into focus, at least in center focus mode that I keep mine
K20 in for imaging dogs.
On Apr 13, 2009, at 09:37 , Nick Wright wrote:
You haven't used the 16-45 since you got it?
On Mon, Apr 13, 2009 at 11:23 AM, Joseph McAllister
<[email protected]> wrote:
I misspoke on the 16-45. I meant the 16-50 (DA*). I don't think
I've used
the 16-45 since I got it, so I know I'm dumb about it.
On Apr 12, 2009, at 23:06 , Pawel Hottowy wrote:
I believe all the DAs have override. And I would be very happy to
realize that my 16-45 is weather sealed, but I certainly doubt so.
BTW
the direct comparison of IQ between 16-45 and 17-70 would be great.
Joseph McAllister
[email protected]
http://gallery.me.com/jomac
http://web.me.com/jomac/show.me/Blog/Blog.html
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