1.4X-L. It performs a lot better than my 1.7, at least with the 500/4.5. And judging from the test pictures Jostein provided, it goes for his 1.7 sample too. 1.4X-L has slightly better resolution, better contrast, and gives less sensor blooming. The contrast is easily corrected, but the sensor blooming is not. I haven't tested it properly with other lenses, but subjectively I think it is the same with Tamron 300/2.8.
So for Joe I think it would be better finding a good 1.4 AF converter, than the 1.7, if his prime goal is to use tc with the 600/4. I haven't tested other converters, but I believe Tamron has pretty a good one. I had one at eBay, but lost it because the invoice ended in my spam folder. I will probably go looking for a 1.4 AF again after I have the K10D in my hands. This said. The 1.7 is good too, I will not separate with mine. But if you don't need the extra reach, or the turning MF to AF feature (I do), then it could be wise looking for something else. Tim Mostly harmless (just plain Norwegian) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Digital Image Studio Sent: 22. november 2006 00:32 To: Pentax-Discuss Mail List Subject: Re: Pentax AF 1.7x is back in production??? On 22/11/06, Tim Øsleby <[EMAIL PROTECTED]> wrote: > But Jostein has kindly lent me his Pentax 1,4. That's a lot better than the > 1,7. So if you don't need the extra length I'd suggest finding a good 1,4 AF > TC instead of the 1,7. Which 1.4TC was that? I've owned all the Pentax 1.4 TCs and after rigorous IQ testing I only retained my AF1.7 TC and a 1.4X-L (which has a slight advantage over the AF1.7 TC on some lenses but only at much smaller apertures). -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://home.swiftdsl.com.au/~distudio//publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
