WTB: Minolta Maxxum AF 2x Tele Converter APO |
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sybersitizen ![]() Senior Member ![]() Joined: 04 August 2006 Country: United States Location: California Status: Offline Posts: 14357 |
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Here is just one example of a claim that the new TC is geared lower than the old TC.
Opposite claims exist, so just pick one or the other to believe, I guess. |
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mirthseeker ![]() Senior Member ![]() Joined: 02 October 2011 Country: Australia Location: Melbourne Status: Offline Posts: 744 |
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Does it seem logical for the high speed TC to enable the combined TC & lens to focus 4 times as fast (at lower effective aperture, longer distance) as the native lens? I think the gearing probably slows down the combination, (ie the later TC is geared to focus slower then the earlier), I would check the gearing on either of the 2X TC's, or the later 1.4 X TC if I had one.
Edited by mirthseeker - 18 May 2019 at 01:18 |
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michelb ![]() Senior Member ![]() Joined: 26 August 2009 Country: Canada Location: Montréal Status: Offline Posts: 653 |
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I have one in what i consider like new condition with case/ box ( maybe missing instructions )
If interested PM me for pictures and details Since i am in canada , shipping and potential customs would be less of an issue. |
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Michel B
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WestCoastCannuck ![]() Senior Member ![]() Joined: 11 January 2011 Country: Canada Location: Victoria, B.C. Status: Offline Posts: 2579 |
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I had to look that one up. I had no idea these were out there! AFter some research I see they were made to be compatible with SSM Minolta lenses. I presume these are identical to the Sony's currently sold. (and like the Sony's, geared the same as the APO ii versions). Cheers Mike |
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flickr
A99ii|A77ii|Tam15-30|ZA24-70|M28-135|M35-105|M80-200G|SAL70400G|Σ50 1.4|ZA135|200F2.8HS G|300F2.8HS G|400/4.5|APOii1.4XTC|APOii2XTC |
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Cekari ![]() Senior Member ![]() Joined: 15 August 2005 Country: Sweden Location: Sweden Status: Offline Posts: 7513 |
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They are identical to the Sonys ones at least the gearing. optically I can't say. I had the 1.4 as we'll but bought the Sony one and I couldn't notice any differences. Well minolta vs Sony in the barrel text only :-) |
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Images https://www.flickr.com/photos/cekari/sets/ ,
English is a funny language, seldom it spells the words like I do |
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Miranda F ![]() Senior Member ![]() Joined: 11 January 2014 Country: United Kingdom Location: Bristol Status: Offline Posts: 3578 |
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But bear in mind that a faster motor drive + gearing doesn't necessarily imply faster AF, for example if the AF is no longer stable but oscillates for a while before settling. I have seen this with some older lenses, and it is due to the gearing (and inertia of the moving parts) not matching the electrical damping in the servo drive. Under damping means several cycles of motor drive before settling. |
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Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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