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03-12-2009, 05:01 AM   #1
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Which adapter 2x AF should I get ?? and where ?

Hi all

I already have tamron 1.4x AF adapter. I use it on my Tamron 70-200 f2.8.

Now, I wanted to try a 2x AF adapter.

Which one to get ? where ?

Thanks in advance for the hints

04-13-2009, 02:35 PM   #2
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Thread can be closed or deleted.

New adapter 2x has arrived
04-14-2009, 12:05 PM   #3
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Well? Which one did you get?
04-14-2009, 03:03 PM   #4
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QuoteOriginally posted by maxwell1295 Quote
Well? Which one did you get?
The Tamron 2x MC7 AF Tc

"Used" but looks new/mint in every way

04-16-2009, 12:10 AM   #5
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QuoteQuote:
netuser: The Tamron 2x MC7 AF Tc

"Used" but looks new/mint in every way
How does it work? Would really like some feedback on that one--thanks.
04-16-2009, 03:06 AM   #6
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The only 2x adapter I use is the 2X-L for my Pentax A* 300mm f2.8.
Every other I have tried has been rubbish apart from the Pentax 1.7X.
05-03-2009, 12:44 PM   #7
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QuoteOriginally posted by Jewelltrail Quote
How does it work? Would really like some feedback on that one--thanks.

Sorry for the delay
Only now I saw this request.

I didn't had time yet to test it properly.
I will get back to this thread as soon I can do it
12-15-2009, 05:47 AM   #8
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Ouch, seems I totally forgot about posting some samples.

well ... better late then never:

DA*300 and this 2x converter, full image on all
(all from my PPG )


Last edited by netuser; 01-27-2010 at 03:51 AM.
12-16-2009, 11:38 PM   #9
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Hey netuser,

since i also have the DA* 300, i am very interessted in this teleconverter.

The birds look quite sharp. Such a good quality,
In some way i find the bokeh in pictures 2 and 3 a bit confusing.

Does Autofocus work when the teleconverter is attached?
How many stops do i lose?
12-17-2009, 06:57 AM   #10
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QuoteOriginally posted by Deimo Quote
Hey netuser,

since i also have the DA* 300, i am very interessted in this teleconverter.

The birds look quite sharp. Such a good quality,
In some way i find the bokeh in pictures 2 and 3 a bit confusing.

Does Autofocus work when the teleconverter is attached?
How many stops do i lose?

When you use converter 1.4 with DA300/4 you get 400/5.6 with autofocus. If you use a 2x conmverter like I did, you will get a 600/8 but no autofocus. The shots were on manual

About the bokeh, I aalso agree. Might have also to do with the fact rocks are wet fom salt water and cristals shine because of the sun...
12-17-2009, 12:11 PM   #11
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Thank you for the information, netuser,

have you already managed to sell your da* 300?
12-17-2009, 12:44 PM   #12
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QuoteOriginally posted by Deimo Quote
Thank you for the information, netuser,

have you already managed to sell your da* 300?
Not yet
12-18-2009, 09:27 AM   #13
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Oh i thought your Tamron 2x MC7 AF Tc is a auto focus, no?
12-18-2009, 09:42 AM   #14
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QuoteOriginally posted by vizjerei Quote
Oh i thought your Tamron 2x MC7 AF Tc is a auto focus, no?
It's auto focus. I use it for instance with tamron 70-200 2.8

You loose the hability to have AF because 300/4 with the converter is 600/8 and because of that no AF is possible on camera body.


Last edited by netuser; 12-20-2009 at 03:19 AM.
12-19-2009, 08:59 PM   #15
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QuoteOriginally posted by netuser Quote
It's auto focus. I use it for instance with tamron 70-200 2.8

You loose the hability to have AF bacause 300/4 with the converter is 600/8 and bause of that no AF is possible on camera body.

Haha you mean MF will be much faster than its "AF" at that time
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