, or some other clever guy)
-Original Message-
From: Marco Ferrari [mailto:[EMAIL PROTECTED]
Sent: 7. september 2005 14:32
To: pentax-discuss@pdml.net
Subject: Teleconverter F 1.7x AF: any comment?
Dear all,
have you ever used this Teleconverter?
Have you some comments?
I shot
Sure, was talking about the rest but obviously at f/8 it won't work :)
Should have been more precise.
2005/9/8, Fred [EMAIL PROTECTED]:
Another problem with the mirror is most are t-mounts and most t-mounts,
(all I've seen in fact), are painted. The Pentax autofocus system needs
a metal
Dear all,
have you ever used this Teleconverter?
Have you some comments?
I shot slide films, and I'm interested in converting a mirror lens and the
SMC-A 50/1.4 (both
manual focus) in a long telephoto and a 85/2.38 autofocus lenses.
Thanks,
marco
message-
From: Marco Ferrari [EMAIL PROTECTED]
Date: Wed, 7 Sep 2005 07:33:56 -0500
To: pentax-discuss@pdml.net
Subject: Teleconverter F 1.7x AF: any comment?
Dear all,
have you ever used this Teleconverter?
Have you some comments?
I shot slide films, and I'm interested in converting
have you ever used this Teleconverter?
Have you some comments?
In my experience, it doesn't work well with long lenses because it has a
limited focusing range. The instructions are to set the lens at infinity
then allow the teleconverter to do the focusing. With telephoto lenses, this
only
From: Marco Ferrari [EMAIL PROTECTED]
Date: 2005/09/07 Wed PM 12:31:48 GMT
To: pentax-discuss@pdml.net
Subject: Teleconverter F 1.7x AF: any comment?
Dear all,
have you ever used this Teleconverter?
Have you some comments?
I shot slide films, and I'm interested in converting
The FA 1.7x is very good. I've used it a number of times and it
delivers good results even when coupled
with a zoom. You may find that autofocus suffers when you use a mirror
tele. They don't really transmit
enough light. Another problem with the mirror is most are t-mounts and
most
The Tamron 500mm SP with a KA adaptor should work nicely then :)
I know KA adaptors are (censored) difficult to find in good condition
and not cheap at all.
2005/9/7, P. J. Alling [EMAIL PROTECTED]:
The FA 1.7x is very good. I've used it a number of times and it
delivers good results even when
On Wed, 7 Sep 2005, Tom Reese wrote:
have you ever used this Teleconverter?
Have you some comments?
In my experience, it doesn't work well with long lenses because it has a
limited focusing range. The instructions are to set the lens at infinity
then allow the teleconverter to do the
On Wed, Sep 07, 2005 at 09:32:39AM -0400, Tom Reese wrote:
have you ever used this Teleconverter?
Have you some comments?
In my experience, it doesn't work well with long lenses because it has a
limited focusing range. The instructions are to set the lens at infinity
then allow the
Thibouille wrote:
The Tamron 500mm SP with a KA adaptor should work nicely then :)
I know KA adaptors are (censored) difficult to find in good condition
and not cheap at all.
It's an f8 lens. I can't get the combo to work.
2005/9/7, P. J. Alling [EMAIL PROTECTED]:
The FA 1.7x is very
Another problem with the mirror is most are t-mounts and most t-mounts,
(all I've seen in fact), are painted. The Pentax autofocus system needs
a metal lens mount to short the right contacts to autofocus.
The Tamron 500mm SP with a KA adaptor should work nicely then :)
I know KA adaptors
AF essentially stops working when the effective F-stop drops smaller than
f5.6.
Herb...
- Original Message -
From: Marco Ferrari [EMAIL PROTECTED]
To: pentax-discuss@pdml.net
Sent: Wednesday, September 07, 2005 8:31 AM
Subject: Teleconverter F 1.7x AF: any comment?
I shot slide
Arkitekt MAA
http://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: Marco Ferrari [mailto:[EMAIL PROTECTED]
Sendt: 7. september 2005 14:32
Til: pentax-discuss@pdml.net
Emne: Teleconverter F 1.7x AF: any comment?
Dear all,
have you ever used this Teleconverter?
Have you some comments
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