Teleconverter magnification comparison. (5 imgs)

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

DaveJC wrote:

I bought the lens from group member Fleafly who recommended a Sigma over the Kenko. IQ is the main thing for me. Birds are small enough to start with so the better IQ is worth the price for me. Also waiting for a used IIs to come into my price range. Should not be too long after September announcements.--

There is no Sigma teleconverter that I am aware of that will fit the Pentax-F*300mm f4.5 lens. The protruding front element of the Sigma will hit the rear element of the Pentax and cannot even be mounted.

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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