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05-10-2018, 08:23 AM   #16
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Someone who owns both posted here: Pentax 1.4 rear converter comparison
Owned both, sold Pentax, bought it back.

There are other threads from wayback (2014) that indicated focus issues with the DA* 300 and the Tamron but it seems not everyone experienced this and reports that date from newer than then seem to report it less often.

05-10-2018, 10:19 AM - 1 Like   #17
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QuoteOriginally posted by UncleVanya Quote
Someone who owns both posted here: Pentax 1.4 rear converter comparison
Owned both, sold Pentax, bought it back.

There are other threads from wayback (2014) that indicated focus issues with the DA* 300 and the Tamron but it seems not everyone experienced this and reports that date from newer than then seem to report it less often.
That's a nice post. Does the Tamron report focal length to the camera accurately for calibrating SR?
05-10-2018, 10:29 AM   #18
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QuoteOriginally posted by normhead Quote
That's a nice post. Does the Tamron report focal length to the camera accurately for calibrating SR?
Nope, it does not report correct FL. I like mine, especially with my DA 18-250 but I am not going to try it on a slower lens like my Sigma 120-400, since slow lens and HSM don't play well together.
05-12-2018, 09:35 AM   #19
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QuoteOriginally posted by SSGGeezer Quote
since slow lens and HSM don't play well together.
What is HSM?

05-12-2018, 11:04 AM - 1 Like   #20
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QuoteOriginally posted by csa Quote
What is HSM?
Sigma lens version of SDM
05-12-2018, 12:29 PM   #21
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Thanks!
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