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12-13-2014, 06:35 AM   #151
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Probably a little lighter because of a shorter focal length and a little faster than 6.3. Just a thought.

12-13-2014, 07:37 AM   #152
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QuoteOriginally posted by thibs Quote
Why would a 400/4.5 be lighter?
Because if you want to build a "small" aperture lens VS a big aperture (say f2.8) you'll need less glass (the diameter of the lens element will be smaller).

Hence : the slower the lens, the smaller the lens (in theory).

Nowadays: the electronic, the AF, takes space in the lens, making them bigger than MF equivalent.
12-13-2014, 08:41 AM   #153
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QuoteOriginally posted by lumbangorat_16 Quote

Yup agree hope much better than DA 55-300 even below DA*60-250 f/4 cause this not * class.

Even optical performance same with DA 55-300 i'll buying it. Oowwwwhhh Pentax don't make me wait forever.
Even though it is not marked as DA*, I hope it is like a bigger 60-250, but with DC motor not SDM (and of course WR).
12-13-2014, 08:56 PM   #154
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If they really are going to bring out a FF body in 2015 I think they need a DA*400mm F4.0. This is also a very useable wildlife telephoto for APS-C sensors. But I sure do not see it on the lens roadmap.

12-13-2014, 09:00 PM   #155
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OT. Just a question before I make a decision. Which has a better IQ, sigma 150-500 or Pentax 55-300 WR? Hope guys can help. Tnx.
12-14-2014, 04:04 PM   #156
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I like the IQ of my Sigma 150-500.
12-15-2014, 09:52 AM   #157
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QuoteOriginally posted by totsmuyco Quote
OT. Just a question before I make a decision. Which has a better IQ, sigma 150-500 or Pentax 55-300 WR? Hope guys can help. Tnx.
DA 55-300 of course sharp at 300mm and its WR. If urgent please buy used sigma and you can sell it gain after Pentax launch135-400 DC WR.
12-15-2014, 03:22 PM   #158
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OK. 55-300 it is in the very near future. Thanks all.

12-16-2014, 07:00 AM   #159
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Are there any reviews or tests of the new 16-85 ?
12-16-2014, 08:16 AM   #160
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QuoteOriginally posted by ZeljkoS Quote
Are there any reviews or tests of the new 16-85 ?
You might find it interesting to read the dedicated thread .
12-16-2014, 09:40 AM   #161
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QuoteOriginally posted by Mistral75 Quote
You might find it interesting to read the dedicated thread .
You mean in the lens database? Yeah, I see there is 1 review of the lens. I was thinking more like a full review, with image samples etc.
12-16-2014, 10:29 AM   #162
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Actually I meant this thread:

https://www.pentaxforums.com/forums/16-pentax-news-rumors/273122-hd-pentax-da...6ed-dc-wr.html
01-03-2015, 11:30 AM   #163
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Since both new lenses can be operanted on full frame cameras, the Pentax FF should be just around the corner.
01-03-2015, 11:46 AM   #164
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QuoteOriginally posted by zeitlos Quote
the Pentax FF should be just around the corner.
But how big is the corner?
01-03-2015, 01:53 PM   #165
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Just hope it's not a circular race track....
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