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02-01-2008, 08:47 AM   #16
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Here they are... if you need/want something specific let me know.. I just shot these real quick jpgs straight from the camera












02-01-2008, 11:22 AM   #17
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Palmor
The kenko looks very much like the sigma I saw.
Here are some pics of the tamron 1.4 tc


















02-01-2008, 12:04 PM   #18
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They look exactly the same.. even down to those 3 line indentations and the look of the release button.
02-01-2008, 12:14 PM   #19
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Hmm, the kenko one looks a bit thicker to me. I wonder why one is 1.4 and the other 1.5?

02-01-2008, 12:39 PM   #20
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If it is a little bit thickier maybe that accounts for the extra .1? If they just made the distance from the element to the sensor just a hair longer would that affect the magnification? I have no idea.. just throwing it out there . Maybe its time to google to see if there are any answers to this hehehe


John
02-01-2008, 01:31 PM   #21
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So I understand correctly - The Tamron AF 1.4 works with the SDM? It removes NO function from the lens?
02-01-2008, 02:07 PM   #22
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QuoteOriginally posted by Tom M Quote
So I understand correctly - The Tamron AF 1.4 works with the SDM? It removes NO function from the lens?
Yes, everything works perfectly...It was and is a pleasant surprise...
02-01-2008, 05:11 PM   #23
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Is this the same tamron lens that you are talking about?

Tamron 1.4x AF Teleconverter for Pentax AF: 33392070 Cord Camera

Thanks for looking -- It is the only place I could find it in stock.

02-01-2008, 05:25 PM   #24
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QuoteOriginally posted by pastorbbc Quote
Is this the same tamron lens that you are talking about?

Tamron 1.4x AF Teleconverter for Pentax AF: 33392070 Cord Camera

Thanks for looking -- It is the only place I could find it in stock.
Yep, that is the exact same one...It is worth every penny.
02-01-2008, 05:33 PM   #25
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QuoteOriginally posted by jgredline Quote
Buddha
What does Tag-lined mean?
Like for instance, "man your farts stink!!" or " oh so it's over?"

The shots with the TC look very good. Man another thing added to the endless list....
02-01-2008, 05:44 PM   #26
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QuoteOriginally posted by pastorbbc Quote
Is this the same tamron lens that you are talking about?

Tamron 1.4x AF Teleconverter for Pentax AF: 33392070 Cord Camera

Thanks for looking -- It is the only place I could find it in stock.
I notice the description of the TC says full autofocus is obtained only with an aperture of 2.8 or larger, and yet jgredline says everything works perfectly with his 18-250 and also his 70-300 neither of which opens to f/2.8. Do I understand this correctly? Would I have full autofocus and autoexposure using this with, say, the Bigma? If so it would be a nice addition to my "toy chest". (The quality of the posted pictures is certainly impressive!)

CN
02-01-2008, 06:44 PM   #27
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QuoteOriginally posted by Clem Nichols Quote
I notice the description of the TC says full autofocus is obtained only with an aperture of 2.8 or larger, and yet jgredline says everything works perfectly with his 18-250 and also his 70-300 neither of which opens to f/2.8. Do I understand this correctly? Would I have full autofocus and autoexposure using this with, say, the Bigma? If so it would be a nice addition to my "toy chest". (The quality of the posted pictures is certainly impressive!)

CN
CN
It is true, the autofocus works fine with those two lenses...Tell you what. Tomorrow I will try the TC converter on my Bigma..
02-01-2008, 06:56 PM   #28
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Just to add, I have owned this very Tamron TC for some time and it is a great investment.
Used it on many different lens and never had any problems.
I had a Kenko 2X TC but it continually searched for focus in anything but the very brightest of light and wide open.
Not this one. A really great buy IMHO!
02-01-2008, 06:59 PM   #29
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QuoteOriginally posted by Bramela Quote
Just to add, I have owned this very Tamron TC for some time and it is a great investment.
Used it on many different lens and never had any problems.
I had a Kenko 2X TC but it continually searched for focus in anything but the very brightest of light and wide open.
Not this one. A really great buy IMHO!
Thanks Bruce for the affirmation.. Truly it surpassed my expectations..
02-01-2008, 08:23 PM   #30
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Autofocus can work with slower the f/2.8 lenses but be prepared for some hunting in less then ideal light conditions. I use the 1.4 with the f/5.6 lens and it will autofocus in decent light.. but it is slower then without the TC. I wouldn't use a 2x TC with a f/5.6 lens unless you are prepared to autofocus


John
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