Cory Waters wrote:
The el-cheepo extension tubes online are totally dumb. By that I mean
they don't have any electrical contacts and whatnot. With the newer
DSLRs and the crippled mount or whatever, I would assume one would
really want a set of tubes that's A compliant. Maybe I'm wrong
The el-cheepo extension tubes online are totally dumb. By that I mean
they don't have any electrical contacts and whatnot. With the newer
DSLRs and the crippled mount or whatever, I would assume one would
really want a set of tubes that's A compliant. Maybe I'm wrong about
that though since
- Original Message -
From: Cory Waters
Subject: extension tube question
So,
Dos one just buy the cheep-o versions from Ebay, use lenses with
aperture rings, and use the green button method?
Thats the way I do it, though I use bellows, not extension tubes. The principle
Kenko sells a set with full contacts, (I think they make one with a
screwdriver pass through as well). You can usually get the full contact
version for between $150 and $175 in a camera store if they're in
stock. I'd expect a better price on line somewhere.
Cory Waters wrote:
The el-cheepo
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the optical guts out of
it?
Sincerely,
Collin
Sent via the WebMail
Collin Brendemuehl let his curiosity get the best of him when he asked:
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the optical guts out of
it?
Kenko makes an AF tube for Pentax. I
Collin Brendemuehl wrote:
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the optical guts out of
it?
Doesn't a TC alter the lens aperture information provided to the body?
S
On Jun 22, 2005, at 8:08 AM, Tom Reese wrote:
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the
optical guts out of it?
Kenko makes an AF tube for Pentax. I have one but I've found
On Jun 22, 2005, at 7:59 AM, Steve Jolly wrote:
Collin Brendemuehl wrote:
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the
optical guts out of it?
Doesn't a TC alter the lens
On Wed, Jun 22, 2005 at 08:44:28AM -0700, Godfrey DiGiorgi wrote:
On Jun 22, 2005, at 7:59 AM, Steve Jolly wrote:
Doesn't a TC alter the lens aperture information provided to the body?
No. [...]
Godfrey
The Pentax 1.7x AF adapter does alter the maximum aperture information;
it shows
The Pentax 1.7x AF adapter does alter the maximum aperture
information;
it shows my 300/2.8 wide open as f4.5
Very interesting! thanks john.
Godfrey
But it's the exception; I don't know of any other TCs that do this. A
full AF TC, with the digital signal pin contact, is unlikely to be
- Original Message -
From: Collin Brendemuehl
Subject: Extension Tube Question
I've seen A-class extension tubes.
But does anyone make one with the AF mechanism coupled through?
Or would it be better to take a little 1.4xTC and strip the optical guts
out of it?
AF is gonna
Kenko has a 25mm one. they don't make the 12mm in Pentax mount.
Herb
- Original Message -
From: Collin Brendemuehl [EMAIL PROTECTED]
To: pentax-discuss@pdml.net
Sent: Wednesday, June 22, 2005 10:40 AM
Subject: Extension Tube Question
I've seen A-class extension tubes.
But does
lens on non-A position you should expect some
overexposure with you PZ1p!
Cheers
Alek
- Original Message -
From: Kathleen [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, August 04, 2003 12:50 PM
Subject: Re: Disappointed - Pentax technicians couldn't answer extension
tube question
extension
tube question.
It is very strange, indeed. Another field where Pentax does not care about
clients.
And the stuff...Uhhh
Cheers
Alek
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Alek Kozak [EMAIL PROTECTED] wrote:
But when you set any lens on non-A position you should expect some
overexposure with you PZ1p!
Why should this be the case? My PZ-1p exposes fine on or off the A
position.
--
Mark Roberts
Photography and writing
www.robertstech.com
Date: Mon, 4 Aug 2003 06:50:20 -0400
From: Kathleen [EMAIL PROTECTED]
Not only did the tech not know about extension
tubes, but he was
arrogant,
as well. I've never had to call them about anything
before, but when
you
get that kind of treatment for just asking a simple
question (including
In my impression their sales management is poorly
trained. Some of them don't seem to know much about
their own products.
Sounds like a poorly managed company which relies on luck.
regards,
Alan Chan
_
Protect your PC - get
I have this extension tube set too, and it won't allow any f-stop display
simply because they do not have the neceassily contacts on the mount. So
they basically turn every lens into K/M lens. For the same reason, you
cannot use the 'A' button of the aperture ring.
regards,
Alan Chan
I'm
You're right Mark. It would only provide multizone metering, not usefull
with macro. Sorry for the confusion.
On the contrary, if you mount a digital flash on AF body, the chosen f-stop
would be displayed. :-)
regards,
Alan Chan
]
Sent: Friday, August 01, 2003 5:39 PM
Subject: Disappointed - Pentax technicians couldn't answer extension tube
question.
Kathleen, do you know what year your extension tube set B was made? It
probably communicates all the features that were transmitted at that time.
Older cameras, like
: Friday, August 01, 2003 8:43 PM
Subject: Re: Disappointed - Pentax technicians couldn't answer extension
tube question.
Kathy, if your lens is set to 'A' while it's on an extension tube, the
diaphragm will be at its minimum aperture, probably f22. If you take it
off
'A', when you press the shutter
Does anyone have the Kenko Uniplus Tube 25 for Pentax? The web site
(thkphoto) says it is designed for autofocus, but doesn't specifically
say that autofocus lenses can still autofocus with it on.
Does anyone know?
Keeping fingers crossed. This would answer a pressing need for closer
focusing
On Sat, 15 Mar 2003 20:16:10 -0700, you wrote:
Does anyone have the Kenko Uniplus Tube 25 for Pentax? The web site
(thkphoto) says it is designed for autofocus, but doesn't specifically
say that autofocus lenses can still autofocus with it on.
Does anyone know?
Keeping fingers crossed. This
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