FS: Pz-AF 2x TELEPLUS MC7
Posted 05/04/2013 - 21:08
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Why will this converter not work with SDM? It has the necessary contacts to drive SDM. Is it just because of the lower light throughput ie. two stops lost, or is there a fault with the contacts?
Patty
Patty
Posted 05/04/2013 - 21:56
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Only converters upto 1.7x will work with sdm due to the light limitation...
PPG Wedding photography Flickr
Concert photography
Currently on a Pentax hiatus until an FF Pentax is released
Concert photography
Currently on a Pentax hiatus until an FF Pentax is released
Posted 06/04/2013 - 20:02
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cabstar wrote:
Only converters upto 1.7x will work with sdm due to the light limitation...
I could be wrong but, I'm not sure it's as simple as that, if it was the speed or lack of available light then I would imagine that it would hunt for focus. In reality it's totally dead on bodies using SDM, it would be interesting to see if a camera such as the *ist D could use it being pre- SDM:Only converters upto 1.7x will work with sdm due to the light limitation...
John
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1568 posts
18 years
Rainhill
[IMG]http://i884.photobucket.com/albums/ac49/johnwhit24/2XMC7_1.jpg[/IMG]
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Looking for £75.
John
In LBA hiatus.