Teleconverter magnification comparison. (5 imgs)

Started Aug 25, 2013 | Photos thread
OP brandrx Forum Pro • Posts: 28,337
Dave...

DaveJC wrote:

Hi Ron,

I have the Pentax AFA 1.7 TC and just picked up the F* 300 f4.5. Anty tips on getting the most from the pair.

After you start using it you will find that prefocusing to a range for what you intend to shoot at will probably be faster than prefocusing to near focus first. For example: Setting your lens at about 20 or 30 feet on the lens for when you are shooting at small birds that have landed. Or setting the lens at 50 to 70 feet if you are shooting at BIF's. Of course high flying eagles and such you might have to set it to 100 feet or so.

Is there a preferred TC that will still let the lens AF with minimum IQ loss.

I prefer the Tamro-F 1.4X Pz_Af or the Kenko 1.5X Pz_Af. However, to save a bunch of money you can pruchase a new Vivitar Series 1 1.4X TC for around US $100. The IQ is not noticiably that much different IMO.

Any 2x TC that is worth the trouble gets unit down used.

I recommend that you just stay away from any 2X TC's with that lens.

A lot of questions but your answers or anyone else's will be appreciated.

So, there you go.

Cheers.

Ron

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Ron - 'We don't have time to go take pics this afternoon Carl.'
Carl - 'What do you mean? It will only take 1/1000s.'
'Keep your eyes looking forward. However, glance back now and then to see where you've come from. It will put a smile on your face.' ~ brandrx

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