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03-10-2015, 04:34 AM   #31
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QuoteOriginally posted by Ishpuini Quote
I seem to remember Ricoh stating in a recent interview that the current AF speed bottle neck was the current lenses and not the K-3 body. And that the two new DFA lenses would be the first to exploit the full speed the K-3 is capable of. That would imply the AF improvement has already been implemented in the K-3. Which doesn't mean there won't be incremental improvements of course.

Wim
That does ring a bell with me, now you mention it. One way or another, it can only mean good things in the future.

03-11-2015, 11:16 AM   #32
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Just an addon with a couple pictures I forgot to add, 645Z next to a (huge) DA645 28-45 and a size comparison of 40xs, FA50 and new 18-50.

As you can see, the DA28-45 is really huge. Well the DFAs are of the same kind. Told you. BIG.

03-11-2015, 11:41 AM   #33
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QuoteOriginally posted by thibs Quote
PS: Guys, Ricoh is serious. Really. My left arm still feels it
At finally Pentax lens made for me, I was already bored with that Sigma

03-11-2015, 11:58 AM   #34
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That picture has been around for a while and it never gets old! I love it!

03-11-2015, 12:50 PM - 2 Likes   #35
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QuoteOriginally posted by 6BQ5 Quote
it never gets old!
Here, I made it full frame compatible for you..
Attached Images
 
03-11-2015, 01:23 PM   #36
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I guess its more spectacular to show this pict, than the ones taken with such a non stabilized combo...


Just a fact re. DA28-45 : far bigger than FA 33-55, or even FA 45-85, whereas not covering 645 Full Frame.... a mystery.
I will not buy it just for that dobble-reason.
03-11-2015, 02:11 PM   #37
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QuoteOriginally posted by Zygonyx Quote
Just a fact re. DA28-45 : far bigger than FA 33-55, or even FA 45-85, whereas not covering 645 Full Frame.... a mystery.
I will not buy it just for that dobble-reason.
It seems like new lenses for digital are massive. The 33-55 weights only 500g. The 28-45 1400g! The new FF lenses are large too; look at the diametre compared to the lens mount. Someone should ask them why these lenses need to so big.
03-11-2015, 02:50 PM   #38
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Could be that they want to charge according to the weight of the lens.

03-11-2015, 02:59 PM   #39
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Or has digital made it so easy to pixel-peep that they have to make them that big to satisfy all the "photographers" who insist on the sharpest possible lens and avoid getting pummeled by online review sites for not having astronomical quantitative measurements that, after a certain point, have practically no impact on the final image?

Edit: Or, less snarkily, does going big allow them to get good performance quickly rather than spend time/money they don't have on optimizing the design for smaller lenses, thereby allowing them to quickly build up a lens line-up?
03-11-2015, 08:59 PM   #40
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Given that most of the mass of a good lens resides in the glass, rather than the structure (even if it is made largely of metal) or the drive infrastructure, it surely means only that there are more and larger glass elements in the digital lenses. Again, given that the reason for engineering lens design (as with any design) is principally to produce something that can meet pre-determined specifications at a reasonable cost (ie what the maker judges the market will bear) the optimisation will be complete when those specifications are reached. To further refine the design may result in something lighter and smaller (or not) but it will be more expensive.
03-11-2015, 10:53 PM   #41
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QuoteOriginally posted by Zygonyx Quote
I guess its more spectacular to show this pict, than the ones taken with such a non stabilized combo...


Just a fact re. DA28-45 : far bigger than FA 33-55, or even FA 45-85, whereas not covering 645 Full Frame.... a mystery.
I will not buy it just for that dobble-reason.
Well, that's why I posted that picture. This 28-45 gives a very good idea of what the DFAs are.
Regarding size, don't forget the 28-45 is stabilized. But still big though (not as heavy as DFAs fortunately).
I was surprised how the combo 645Z+28-45 is quite easy to handle, in fact. It's just big (and the DA645-55/2.8 is ridiculous next to the 28-45
03-12-2015, 05:28 AM   #42
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QuoteOriginally posted by Black_Wizards Quote
Hello!

Nice review!

You own a 50-135mm. Me too :-)
Will you say the new 70-200 focus faster than the 50-135 on a K_3? did you try with moving subject?
I really love 50-135mm, but it has the slowest AF in DA* category, it's a well known limitation !
03-12-2015, 11:07 AM   #43
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QuoteOriginally posted by thibs Quote
Well, that's why I posted that picture. This 28-45 gives a very good idea of what the DFAs are.
Regarding size, don't forget the 28-45 is stabilized. But still big though (not as heavy as DFAs fortunately).
I was surprised how the combo 645Z+28-45 is quite easy to handle, in fact. It's just big (and the DA645-55/2.8 is ridiculous next to the 28-45
Actually the 55mm is D-FA
Like the first 25mm and the 90mm.
Hence this only DA wide zoom's size mystery.
03-12-2015, 01:08 PM   #44
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QuoteOriginally posted by Zygonyx Quote
Actually the 55mm is D-FA
Like the first 25mm and the 90mm.
Hence this only DA wide zoom's size mystery.
Indeed .

---------- Post added 12-03-15 at 21:13 ----------

QuoteOriginally posted by gr8wings Quote
I really love 50-135mm, but it has the slowest AF in DA* category, it's a well known limitation !
Yep. The DFAs are NOT in ANY way comparable (on a K-3).
Think, ist-DL vs K-3. Fair comparison, huh?
03-12-2015, 01:32 PM   #45
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That new 18-50 is petite, though. Very nice.
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