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02-23-2009, 04:41 PM   #1
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Fa77/1.8 + a1.4x-s tc ?

Anyone ever used these two together?

I have the TC, wondering how the FA77 works with it.

Combined , the lens is an effective 108mm f/2.5.
(Equivalent to APS-C 165mm.)

The numbers are cool, at least!

02-23-2009, 07:14 PM   #2
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I've tried the 77mm Limited with the Pentax 1.7X Autofocus TC with pretty good results. A little softer, but very good all things considered. Since I picked up an FA 135mm 2.8 I don't have much need for the combination anymore.
02-23-2009, 08:49 PM   #3
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A TC on the 77mm? It's enough to give a sensitive soul the vapours.
02-24-2009, 07:17 PM   #4
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QuoteOriginally posted by dadipentak Quote
A TC on the 77mm? It's enough to give a sensitive soul the vapours.
Does that mean you've tried it?

02-24-2009, 07:56 PM   #5
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QuoteOriginally posted by dave9t5 Quote
Does that mean you've tried it?
Nope, I've got a Sigma 105mm so why bother? I have tried extension tubes with the 77mm but don't have anything to show for it--yet, at least.
02-25-2009, 12:01 AM   #6
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Hmm...I think it will work.

I don't have 77Ltd but 43 Ltd.
And I've tried it with my both TC:
- Tamron 1.4x TC (Is this what you're talking about?)
- Vivitar 2x MFTC
they all work just fine.
The AF works too.
The combo of 43 Ltd & Vivitar 2x Macro TC is just amazingly sharp, much sharper than the TC with my FA 50/1.4 or even F 50/1.4.

Since the Limited shares the same technology, I'm pretty sure they will work just fine.
02-25-2009, 10:19 AM   #7
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QuoteOriginally posted by dadipentak Quote
Nope, I've got a Sigma 105mm so why bother? I have tried extension tubes with the 77mm but don't have anything to show for it--yet, at least.
OK, well back to the original question:
FA77/1.8 + a1.4x-s tc ?
Anyone ever used these two together?


Let me rephrase the question to fit your feedback:
FA77/1.8 + a1.4x-s tc ?
Anyone ever not used these two together?


Now your comment is contributing
02-25-2009, 10:31 AM   #8
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QuoteOriginally posted by HermanLee Quote
Hmm...I think it will work.

I don't have 77Ltd but 43 Ltd.
And I've tried it with my both TC:
- Tamron 1.4x TC (Is this what you're talking about?)
- Vivitar 2x MFTC
they all work just fine.
The AF works too.
The combo of 43 Ltd & Vivitar 2x Macro TC is just amazingly sharp, much sharper than the TC with my FA 50/1.4 or even F 50/1.4.

Since the Limited shares the same technology, I'm pretty sure they will work just fine.
Nope, talking about this TC: Pentax Lens Review Database - 1.4x-S

Thanks for your comments. I've used it on A50/1.4 and it's nice (eff.70/2).

TC's work best on fast tele primes, so I don't see why it wouldn't work on the 77/1.8.
It would be a very compact and versatile combo, compared to carrying both a 77/1.8 and a 100/2.8.

But there are just some lenses that don't TC well and others that do, hence the question.

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