Carlos - that is correct, I was referring to the new HD 1.4x. I have not done any laboratory bench-tests etc. with this lens + converter so I can’t give definitive answers. I suspect that if you work from a tripod, mirror-up, remote trigger with appropriately high-enough shutter speed, you might see some image degradation from using the converter. Under my normal shooting conditions, hand-held, careful-but-not-obsessive steady shooting, I cannot tell which images were shot with or without the extender attached. And I noticed no impact on focusing speed; I suspect that older cameras with less well developed AF systems might slow a bit due to the reduced light through the extender but not an issue that I noticed with the K-3.
In short, my only issue with the HD 1.4x is that they should have given this to us 5-10 years ago. stan On Feb 25, 2015, at 6:22 AM, Carlos R. <[email protected]> wrote: > Hi Stan. I suppose that the 1.4 extender you used with your 50-135 is the new > HD 1.4 converter. If that's the case, how do you find the resulting IQ and > focusing speed of the HD 1.4x + 50-135mm combo? I am mulling the purchase of > that converter to use it mainly with the mentioned lens and your first hand > experience report would be very valuable. > > Carlos -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
