-Original Message-
From: Mark Erickson [EMAIL PROTECTED]
Subject: Re: Teleconverter question
Snip
I think there might be something about the optical formula of the F* and FA*
300mm F4.5 lenses that makes them unsuitable for use with teleconverters.
--Mark
I truly doubt
From: Don Herring [EMAIL PROTECTED]
I am planning to get a 1.4-S teleconvertor, mainly
to use with my A* 300/4.
Can this particular converter be used with a 500/4.5
screw mount (with the
screw mount adapter of course)?
Yes it can. Also the L-converters (2x-L, 1.4x-L) do
work with this
Hi,
Don Herring wrote:
I am planning to get a 1.4-S teleconvertor, mainly to use with my A* 300/4.
Can this particular converter be used with a 500/4.5 screw mount (with the
screw mount adapter of course)?
It can be used of course, but for these focal lengths the 1.4-L
converter is
It can be used of course, but for these focal lengths the 1.4-L
converter is definitely a better choice
Inquiring minds want to know - Why is it the better choice?
Ken Waller
-Original Message-
From: Sas Gabor [EMAIL PROTECTED]
Subject: Re: Teleconverter question
Hi,
Don Herring
Kenneth Waller [EMAIL PROTECTED] wrote:
It can be used of course, but for these focal lengths the 1.4-L
converter is definitely a better choice
Inquiring minds want to know - Why is it the better choice?
Ken Waller
The A1.4X-L and A2X-L teleconverters both have lens groups that protrude
into
It can be used of course, but for these focal lengths the 1.4-L
converter is definitely a better choice
Inquiring minds want to know - Why is it the better choice?
Well, it can't be a better choice if it doesn't fit, and the A
1.4-L certainly will not fit the A* 300/4, for example. On the
On 9 Mar 2004 at 17:07, Fred wrote:
Well, it can't be a better choice if it doesn't fit, and the A
1.4-L certainly will not fit the A* 300/4, for example. On the
other hand, I don't know if that TC will fit the 500/4.5 screw mount
lens with adapter, so maybe...
The nX-L convertors fit the
Sas,
I have the A1.4-S Teleconverter and it works fine with the A300/4 lens. The L
teleconverters (A1.4-L and A2.0-L) are for very special applications, big fast glass.
They have long snouts that won't fit in the A300/4. The L's are designed for the
A300/2.8, A400/2.8, and such. I have the
At 06:15 PM 3/9/04 -0500, you wrote:
Sas,
I have the A1.4-S Teleconverter and it works fine with the A300/4
lens. The L teleconverters (A1.4-L and A2.0-L) are for very special
applications, big fast glass. They have long snouts that won't fit in the
A300/4. The L's are designed for the
On 9 Mar 2004 at 18:57, Don Herring wrote:
That's was my thinking on the 1.4-L and the 300/4. I guess I'll try that
converter with the screw mount and go from there.
The manual for the Rear Converter A, 1.4x-s, 2x-s, 1.4x-L, 2x-L contains a
compatibility cross-reference and is available for
I presume you are going to use this lens with bellows for macro work? You
would probably be better off just using the 50 mm and bellows. A 2x
teleconverter will turn your 50 mm lens into a 100 mm lens but it will not
be a macro and the image quality will inevitably decline. It is the flat
Vivitar Macro focusing teleconverter, you can find them on
e-bay regularly in both k and ka mount.
At 05:07 PM 5/29/2003 -0400, you wrote:
Hello,
I was wondering if anyone would like throw in a
recommendation for a decent budget teleconverter. I would
like to use it with my smc-a f/2 50mm and
Thanks everyone for your help. I think I'll just save up a
little money and hold off for nicer macro equipment (bellows)
or the Pentax 100mm macro lens (the cheap one). That being
said, if I'm browsing ebay and see a vivitar macro
teleconverter for an amazing deal, I'll grab that. Enjoy the
On Sun, 22 Apr 2001 09:13:03 -0700, Bob Keefer wrote:
Also, any thoughts on the 1.4X-L?
It's the best of all the converters I own (about 5 I think :-)
It has the biggest diameter lens elements, no causes less vignetting wide open.
Note that it only fits the longer lenses, that have enough
: Jan van Wijk [SMTP:[EMAIL PROTECTED]]
Sent: Monday, April 23, 2001 6:16 AM
To: [EMAIL PROTECTED]
Subject:Re: teleconverter question
On Sun, 22 Apr 2001 09:13:03 -0700, Bob Keefer wrote:
Also, any thoughts on the 1.4X-L?
It's the best of all the converters I own (about 5 I
Recently Kevin Thornsberry wrote:
I was wanting to put a 2x-L on my A*300/2.8 until I checked Boz's site which says
the L converters are for focal lengths greater than 300 mm. Can I or can I not use
the 1.4x-L and 2.0x-L on my A*300/2.8?
Hi Kevin,
I use the exact Pentax wording:
S = to
On Mon, 23 Apr 2001 05:53:17 -0500, Kevin Thornsberry wrote:
Can I or can I not use the 1.4x-L and 2.0x-L on my A*300/2.8?
Yes you can, it is one of the lenses the x-L converters are designed for ...
The note on BOZ's site relates to the f4 and 4.5 lenses, like the F* 300 4.5
Regards, JvW
Kevin,
From an 8.5x11 inch Pentax Lens catalogue, page 26 covers SMC-A Rear
Converters. The table Usable Lenses with Rear Converter-A says the A*300/2.8
can use all 4 converters (1.4 or 2.0, S or L), but it indicated Better
performance can be achieved with the L versions on the A*300/2.8.
Bob, I haveused the 1.4X-S
with my 300mm FA and get very acceptable results. Other than the obvious
difference in lens power, I can't tell from the photo wether I've taken the
photo with or without the converter.
Ken Waller
- Original Message -
From:
Bob Keefer
To:
Bob,
The German Pentax pages include PDF descriptions that list compatibility
between lenses and teleconverters. The FA*300/4.5 page is:
http://www.foto.pentax.de/produkte/pdf/pentax024400.pdf
and it does list the 2X-S teleconverter and FA*300/4.5 as being compatible.
The 2X-L is not
On 21 Apr 2001, at 22:53, Bob Keefer wrote:
Hi all:
I have the Pentax 2X-S teleconverter, which frankly doesn't produce very sharp
images with my FA*300/4.5, not even locked down into the tripod with careful
technique. (I get better slides with my son's Canon 300/4.0 with a Canon 2X.
My A2X-S is very sharp with either my 400/5.6 K or my 200/4 M. I have an
18x12 print of a race car that I shot with the 400/2XS combo that really
leaves nothing to be desired in terms of sharpness. I don't think the L
converters will fit the 300/4.5, but I could be wrong. Generally, the L
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