the safest choice is one of the Sigma converters.
Herb
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, March 26, 2004 11:45 PM
Subject: Re: tele extenders
I am considering a tele-extender for my Sigma 7-300 Zoom. At 70 mm, the
back element
]
Sent: Friday, March 26, 2004 7:56 PM
Subject: Re: tele extenders
Herb, before I purchased the S convertor for my 300mm f4.5 FA, I spent
some
time with Pentax Colorado trying to determine the recommended usage.
There
was confusing literature out there and it took them a while to come up
the A* 600 f5.6? as you can tell, i am on the hunt for * lenses of various
vintages.
Herb...
- Original Message -
From: Kenneth Waller [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, March 25, 2004 10:42 PM
Subject: Re: tele extenders
It's the 1.4X-S on the 300mm f4.5 FA
I have the 600 f5.6, Herb. What would you like to know?
-Original Message-
From: Herb Chong [mailto:[EMAIL PROTECTED]
Sent: March 26, 2004 6:22 AM
To: [EMAIL PROTECTED]
Subject:Re: tele extenders
OK, i have the A1.4X-L now but no lens to fit it to yet. i will be getting
Can anyone comment on the Kenko KAX MC7 teleconverter?
Thanks, Alin
I've used them both, in the proper sequence, on the 600mm for 1176mm!
Yes, the sequence is ~very~ important - if you put the TC on the
~front~ of the 600, you get some really serious vignetting - vbg.
Fred
Fred [EMAIL PROTECTED] wrote:
I've used them both, in the proper sequence, on the 600mm for 1176mm!
Yes, the sequence is ~very~ important - if you put the TC on the
~front~ of the 600, you get some really serious vignetting - vbg.
I believe he meant the sequence of the two teleconverters. You
I've used them both, in the proper sequence, on the 600mm for
1176mm!
Yes, the sequence is ~very~ important - if you put the TC on the
~front~ of the 600, you get some really serious vignetting -
vbg.
I believe he meant the sequence of the two teleconverters. You
can't put the 'L'
, March 26, 2004 6:42 AM
Subject: RE: tele extenders
I have the 600 f5.6, Herb. What would you like to know?
.
I believe fellow Michigander Bill Sawyer has the 600mm f5.6. I don't know if
he has coupled it with any converters yet.
Kenneth Waller
- Original Message -
Sent: Friday, March 26, 2004 6:21 AM
Subject: Re: tele extenders
OK, i have the A1.4X-L now but no lens to fit it to yet. i
VVVBG
I even sometimes remember to look throught the small end!
Kenneth Waller
- Original Message -
From: Fred [EMAIL PROTECTED]
Subject: Re: tele extenders
I've used them both, in the proper sequence, on the 600mm for 1176mm!
Yes, the sequence is ~very~ important - if you put
Its also not good to try to put the L convertor on the 300mm f4.5 FA!
Kenneth Waller
- Original Message -
From: Mark Roberts [EMAIL PROTECTED]
Subject: Re: tele extenders
Fred [EMAIL PROTECTED] wrote:
I've used them both, in the proper sequence, on the 600mm for 1176mm!
Yes
although the L fits the FA* 400 f5.6 and seems to work so long as you don't
focus too close.
Herb...
- Original Message -
From: Kenneth Waller [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, March 26, 2004 7:35 PM
Subject: Re: tele extenders
Its also not good to try to put the L
contact lens elements on those lenses.
S you should get the L out of there. GRIN
Kenneth Waller
- Original Message -
From: Herb Chong [EMAIL PROTECTED]
Subject: Re: tele extenders
although the L fits the FA* 400 f5.6 and seems to work so long as you
don't
focus too close.
Herb
base.
If you're on a budget, though, it's a good ticket for a 600mm lens. But get
the f4 if you have the money.
-Original Message-
From: Herb Chong [mailto:[EMAIL PROTECTED]
Sent: March 26, 2004 7:17 PM
To: [EMAIL PROTECTED]
Subject:Re: tele extenders
how does the A* 600
, March 26, 2004 7:56 PM
Subject: Re: tele extenders
Herb, before I purchased the S convertor for my 300mm f4.5 FA, I spent
some
time with Pentax Colorado trying to determine the recommended usage. There
was confusing literature out there and it took them a while to come up
with
the correct
the FA* 250-600 f5.6. whatever i get will be used almost exclusively with my
*istD. there is a slight chance i can get both.
Herb
- Original Message -
From: Bill Sawyer [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, March 26, 2004 8:08 PM
Subject: RE: tele extenders
It has
I am considering a tele-extender for my Sigma 7-300 Zoom. At 70 mm, the
back element is back into the mount, and moves forward as I zoom to 300
mm. What options do I have and can I preserve the AF?
John G.
To those that have used a 2X tele-extender with a telephoto (200 or
300mm), what do you seem to find to be the compromising element...loss
of sharpness, contrast, etc? When I used a 300/4A* with a 2x-AS I was
always impressed with its results. But now with another system I'm
getting a
To those that have used a 2X tele-extender with a telephoto (200 or
300mm), what do you seem to find to be the compromising
element...loss of sharpness, contrast, etc? When I used a 300/4A*
with a 2x-AS I was always impressed with its results. But now with
another system I'm getting a
Jay Todd [EMAIL PROTECTED] wrote:
To those that have used a 2X tele-extender with a telephoto (200 or
300mm), what do you seem to find to be the compromising element...loss
of sharpness, contrast, etc? When I used a 300/4A* with a 2x-AS I was
always impressed with its results. But now with
What happens is that all the aberrations of the lens are doubled along with the
focal length, old cheap tele-converters add their own aberrations as well. Zooms
tend to have more aberrations so they do not stand up to tele-converters as well
as most primes. However most of the 2.8 zooms are
At 02:01 PM 3/25/2004 -0600, you wrote:
To those that have used a 2X tele-extender with a telephoto (200 or
300mm), what do you seem to find to be the compromising element...loss of
sharpness, contrast, etc? When I used a 300/4A* with a 2x-AS I was always
impressed with its results. But now
tele
extenders is that
1) 2x extenders are not as good as 1.4x extenders. Very few people I know
use a 2x, whereas a lot of them use a 1.4x. I have not read many
favorable reviews of 2x converters, and my own limited experience bears
this out.
2) zooms are normally VERY POOR with tele extenders
Jay, I regularly use 1.4 Pentax extenders on my 300MM f4.5 FA and 600mm f4.0
FA and am happy with the results. Never tried 2.0 extenders and don't intend
to.
Kenneth Waller
- Original Message -
Sent: Thursday, March 25, 2004 5:59 PM
Subject: Re: tele extenders
From: Jay Todd [EMAIL
do you use the S or the L extenders?
Herb
- Original Message -
From: Kenneth Waller [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, March 25, 2004 6:53 PM
Subject: Re: tele extenders
Jay, I regularly use 1.4 Pentax extenders on my 300MM f4.5 FA and 600mm
f4.0
FA and am
Herb,
It's the 1.4X-S on the 300mm f4.5 FA and the 1.4X-L on the 600mm f4.0 FA.
I've used them both, in the proper sequence, on the 600mm for 1176mm!
Kenneth Waller
- Original Message -
From: Herb Chong [EMAIL PROTECTED]
Subject: Re: tele extenders
do you use the S or the L extenders
27 matches
Mail list logo
