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03-21-2018, 06:51 PM   #1
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New DA*16-50/2.8 patent filed in Japan

【公开番号】特開2018-45172(P2018-45172A)
Specification and lens arrangement of embodiment 1 for APS-C camera
短焦点距離端 中間焦点距離 長焦点距
FNO. 2.9 2.9 2.9
f 16.52 28.36 48.35
W 41.8 26.7 16.3
Y 14.24 14.24 14.24
fB 37.30 49.96 64.37
L 137.62 148.58 168.41
d5 2.626 15.765 29.757
d15 17.997 7.398 1.100
d22 7.370 3.129 0.854


Last edited by OoKU; 03-21-2018 at 07:34 PM.
03-21-2018, 07:00 PM   #2
mee
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Do they issue patents when the optical formula stays the same? (that is, does this look to be using a new optical formula?)
03-21-2018, 07:01 PM   #3
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16.52 rounds to 17, not 16.
48.35 rounds to 48, not 50.
So this looks more like a DA*17-48/2.9.
03-21-2018, 07:31 PM   #4
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Doesn't it say "compact camera", not "lens"?

03-21-2018, 07:37 PM   #5
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QuoteOriginally posted by Paul the Sunman Quote
Doesn't it say "compact camera", not "lens"?
No say compact ,I deleted the word.
03-21-2018, 07:54 PM   #6
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QuoteOriginally posted by lytrytyr Quote
16.52 rounds to 17, not 16.
48.35 rounds to 48, not 50.
So this looks more like a DA*17-48/2.9.
They could totally call that a 16-50! Manufacturers fudge a little, I'm sure

Good news!
03-21-2018, 08:13 PM   #7
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fantastic, looking forward to a re-vamp of the DA* line for APS-C
03-21-2018, 08:14 PM - 1 Like   #8
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They say my A 70-210 is actually a 75-205 and the 50 1.7 is in fact a 52mm and the FA 28 2.8 is actually 29.5mm or so... So that is not uncommon...

03-21-2018, 08:27 PM   #9
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QuoteOriginally posted by lytrytyr Quote
16.52 rounds to 17, not 16.
48.35 rounds to 48, not 50.
So this looks more like a DA*17-48/2.9.
All zoom lenses has tolerances in optical formula.
03-21-2018, 10:23 PM - 2 Likes   #10
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QuoteOriginally posted by lytrytyr Quote
16.52 rounds to 17, not 16.
48.35 rounds to 48, not 50.
So this looks more like a DA*17-48/2.9.
16.52mm x 48.35mm f/2.9 just doesn't roll off the tongue.



16x50/2.9 will likely sell a bit better.

03-22-2018, 12:45 AM - 4 Likes   #11
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So, will this 16.52-48.35 f/2.9 replace the current DA* 16.48-48.50 f/2.9?
03-22-2018, 12:53 AM   #12
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QuoteOriginally posted by Kunzite Quote
So, will this 16.52-48.35 f/2.9 replace the current DA* 16.48-48.50 f/2.9?
Really replace....
03-22-2018, 01:45 AM - 1 Like   #13
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As long as the focus motor & mechanism is properly designed and put together, this is good news regardless of the specifics of the optics.
03-22-2018, 02:23 AM - 2 Likes   #14
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I hope it has only one extending cylinder
03-22-2018, 02:31 AM - 3 Likes   #15
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QuoteOriginally posted by Jonathan Mac Quote
As long as the focus motor & mechanism is properly designed and put together, this is good news regardless of the specifics of the optics.
True, but if they want it to be a killer "Pro-grade" lens with 1000usd price tag, I think that they should also improve the optics.
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