Re: Cheapest Pentax Extension Tubes

2003-02-11 Thread Jostein
When you buy extension tubes, you get a set of three, so your figures
add up nicely...:-)

My set of Chinon tubes cost me $25 a few years ago. Include Ricoh and
all the 3rd party makes, and you add up with pretty decent odds for
finding something second hand, in good shape, and cheap.

Why do you want AF? On extension tubes, it sounds pretty wasted,
imo...

Jostein

- Original Message -
From: "Gregory L. Hansen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, February 11, 2003 3:36 PM
Subject: Cheapest Pentax Extension Tubes


> Inspired by the best and cheapest lens thread, I was browsing lenses
on
> B&H, and saw extension tubes listed.  And it looks to me like the
cheapest
> Pentax AF extension tube is the Tamron 1.4x teleconverter with lens
> removed, for $50.  The tubes without lenses cost around $150.
>
> What in the world is up with that?  Does it really cost that much
more to
> *not* grind, polish, coat, and install glass?
> --
> "A nice adaptation of conditions will make almost any hypothesis
agree
> with the phenomena.  This will please the imagination but does not
advance
> our knowledge." -- J. Black, 1803.
>
>




Re: Cheapest Pentax Extension Tubes

2003-02-11 Thread Peter Alling
My theory is that they do all of than then simply discard the lenses.
That would account for the cost. ;)

At 09:36 AM 2/11/2003 -0500, you wrote:

Inspired by the best and cheapest lens thread, I was browsing lenses on
B&H, and saw extension tubes listed.  And it looks to me like the cheapest
Pentax AF extension tube is the Tamron 1.4x teleconverter with lens
removed, for $50.  The tubes without lenses cost around $150.

What in the world is up with that?  Does it really cost that much more to
*not* grind, polish, coat, and install glass?
--
"A nice adaptation of conditions will make almost any hypothesis agree
with the phenomena.  This will please the imagination but does not advance
our knowledge." -- J. Black, 1803.


Outside of a dog, a book is man's best friend.
Inside of a dog, it's too dark to read.  --Groucho Marx




Cheapest Pentax Extension Tubes

2003-02-11 Thread Gregory L. Hansen
Inspired by the best and cheapest lens thread, I was browsing lenses on
B&H, and saw extension tubes listed.  And it looks to me like the cheapest
Pentax AF extension tube is the Tamron 1.4x teleconverter with lens
removed, for $50.  The tubes without lenses cost around $150.

What in the world is up with that?  Does it really cost that much more to
*not* grind, polish, coat, and install glass?
--
"A nice adaptation of conditions will make almost any hypothesis agree
with the phenomena.  This will please the imagination but does not advance
our knowledge." -- J. Black, 1803.