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03-14-2018, 04:53 AM   #1
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Missing introduction and production dates of Pentax lenses

Booth lenses are without year of introduction, so they appear in the lens search sorted by year at the top of the results - before the first AF lenses.
SMC Pentax-DA L 50-200mm F4-5.6 ED WR Reviews - DA L Zoom Lenses - Pentax Lens Reviews & Lens Database
SMC Pentax-DA L 55-300mm F4-5.8 ED Reviews - DA L Zoom Lenses - Pentax Lens Reviews & Lens Database

There are some AF lenses with missing information about production years.
Takumar-F 28-80mm F3.5-4.5 Reviews - Non-SMC Pentax Zoom Lenses - Pentax Lens Reviews & Lens Database
Takumar-F 70-200mm F4-5.6 Reviews - Non-SMC Pentax Zoom Lenses - Pentax Lens Reviews & Lens Database

Some lens introduction dates are available here:
List of announcement dates for Pentax lenses and bodies - PentaxForums.com
Pentax lens publish dates | List of publish dates for Pentax? | Flickr


Last edited by angerdan; 03-14-2018 at 04:59 AM.
03-14-2018, 08:50 AM   #2
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Nice catch! I've updated the two DA lenses and the 28-80mm, but I have no info on the 70-200mm. If anyone has a reliable source, please post here.

@Ole

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03-14-2018, 11:02 AM   #4
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I'd rather not guess around, do you know that they were released at the same time?


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03-14-2018, 12:48 PM   #5
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They are physically identical, so the production only could take place in the same time as the smc-F labeled versions.
Earlier or later production wouldn't make sense and storing for later release would mean additional costs. So from financial view i can't see a reason for different production times.
03-14-2018, 01:53 PM   #6
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QuoteOriginally posted by angerdan Quote
They are physically identical, so the production only could take place in the same time as the smc-F labeled versions.
Earlier or later production wouldn't make sense and storing for later release would mean additional costs. So from financial view i can't see a reason for different production times.
Right, but that's an assumption. The cheaper Takumar version could have succeeded the SMC version a couple of years later, for instance, and/or been discontinued earlier.

I can mention the SMC version's production dates as a note, but until we have a reference for those dates, I'll leave them as unknown.

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04-14-2018, 04:18 PM   #7
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I'm sure the production years are nearly similar. Also better one year difference to the unknown date than no date at all.
When there's no source since the last 30 years, the will be no source for the next 30 years
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