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03-14-2022, 03:39 PM   #16
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Exciting if there will be lens+sensor stabilization. I really like my m43 kit because of Dual IS. I use telephoto (up to 400mm equiv) a lot for abstract or landscapes, where fine tuning the composition is important. And it's nice to be able to do that handheld.

03-14-2022, 03:43 PM - 1 Like   #17
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Sounds like two great places for Pentax to be focusing their efforts.

I've no doubt an optically stabilized lens will be really nice to use. I use stabilized binoculars, and I can say for sure that is a really fantastic experience (wanting a shaky viewfinder to remind you how shaky your hands are... that just sounds like justification for not having OS available). I'm sure the viewfinder experience with a stabilized lens will benefit just as much. And if it's combining with the already very capable Pentax in body SR, we should hopefully get some of the best stabilization for the given field of view available on any system.

The 50-135 with PLM should make a winning pro level zoom combination on the K3iii. No brainer there. Just hope the price isn't much more than the 16-50 PLM.

This all sounds like good news to me. And it checks off more boxes that obviously come before any potential FF supertele, which is what I'm really hoping for.
03-14-2022, 04:25 PM   #18
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QuoteOriginally posted by house Quote
DA*1118 is part of the new DA* specification
Yes. And not a rerelease which is where my head was at. Lol. I own the 11-18 and the older 16-50. Plenty here seem to have one or both.

---------- Post added 03-14-22 at 07:27 PM ----------

QuoteOriginally posted by Kunzite Quote
Maybe it's a matter of not being left behind.
The others can combine optical with in-body stabilization, with results as good as 8 stops and - with wide angle lenses - exposure times of several seconds. Pentax improved their in-body SR, but their best is still at about 5.5 stops.

I think Pentax should reserve in-lens SR for some lenses, particularly skipping primes with up to moderate focal lengths. Or at least D FA* primes (which should be about the ultimate optical quality) and Limiteds.
For a zoom like the 70-300, why not? It should help, even at that focal length.
5.5 stops is about all any full frame vendor is getting. The higher numbers are m43 where the sensor is much smaller. (And the focal lengths are also smaller.)
03-14-2022, 04:57 PM - 3 Likes   #19
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The reason for putting SR in the lens is not to replace IBIS. It is to hand off two axis correction to the lens and leave three in body. Yaw and Pitch are more easily corrected in the lens. Roll and movement along the X and Y axis are better corrected with a moving sensor.

03-14-2022, 05:55 PM - 1 Like   #20
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QuoteOriginally posted by Mistral75 Quote
That seems to be the tricky part:



I heard the same from a source of mine, with the following addition: the difficulties in the development of the dual stabilisation (lens + sensor) would be linked to the system, and in particular the initially chosen optical scheme, requiring, for the dual stabilisation to work correctly, data transfer rates between body and lens (and vice-versa) higher than what the communication protocols of the KAF4 mount could allow. As a result, the engineers would have had to go back to the drawing board, so to speak, and in particular to rework the optical scheme.

The above comes from a person who, considering their job, sounds legit but it's the first pieces of information I received from them. Take it therefore with the appropriate grain of salt, even though the Pentax Rumors article corresponds exactly to part of what they told me, which tends to give credence to the whole of what they said.
I hope that doesn't mean it won't work effectively with older cameras like the K1...

I wouldn't mind too much if I got a stop less stabilization than the K3iii people, but I would want it to work...

-Eric
03-14-2022, 10:52 PM   #21
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In lens stabilization is the key for even longer lenses in the future. Combination with IBIS live will be good. The Days of either IBIS or ILS are over, you want both - if you think, you don’t want it, you just get it.
Besides that both lenses were more less obvious from the roadmap. Time for the DFA*35 to surface. Afterwards we can ask what’s next.
03-15-2022, 12:54 AM   #22
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QuoteOriginally posted by UncleVanya Quote
5.5 stops is about all any full frame vendor is getting. The higher numbers are m43 where the sensor is much smaller. (And the focal lengths are also smaller.)
Canon EOS R5: 8 stops of stabilization (with certain lenses).
Yes, Pentax' SR is quite good compared to other unassisted systems. But...

03-15-2022, 01:13 AM   #23
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My tripod has 100 stops of image stabilization, it crushes all brands of cameras together. There is a reason why tripods aren't allowed in museums without authorization / license. Tripod + flash = professional. Camera + lens stabilization = consumer (hobby, amateur, playing with toys).
03-15-2022, 01:57 AM - 2 Likes   #24
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Wouldn't in-lens stabilisation also make the job easier for the AF? I can see the benefit of that even on focal lengths as short as 200-300 mm. Even a compact lens as the M* 300 mm I can't hold perfectly still.
03-15-2022, 05:20 AM   #25
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I bought the D-FA 70-210 last year based on advice from this forum, after asking if I should wait for the D-FA 70-300 or buy the D-FA 70-210. Forum member comments were that the HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR may never be released, not to wait for it, go for the 70-210 f4. So I purchased the D-FA 70-210 f4, and now the 70-300 is rumored
03-15-2022, 05:22 AM   #26
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I saw it and I would be more excited with 60-250 DA* being remade then with 50-135 as this lens is soooooo totally out of my interest that I often forget that Pentax has such lens

70-300 may be a cool one if it works with K-3/3 properly (so IBIS + ILIS), though it being FA menas it will be really big and heavy so I will pass on this one too most likely.

QuoteOriginally posted by biz-engineer Quote
I bought the D-FA 70-210 last year based on advice from this forum, after asking if I should wait for the D-FA 70-300 or buy the D-FA 70-210. Forum member comments were that the HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR may never be released, not to wait for it, go for the 70-210 f4. So I purchased the D-FA 70-210 f4, and now the 70-300 is rumored

I am on the same page now with me giving away 55-300 PLM and wanting to but 60-250. Wait for new version or get the current one
03-15-2022, 05:44 AM - 2 Likes   #27
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QuoteOriginally posted by biz-engineer Quote
So I purchased the D-FA 70-210 f4, and now the 70-300 is rumored
Your 70-210 can be used now and the 70-300 is still just a rumor, besides the new lens is slower and likely external zooming with it like the 55-300 PLM.
03-15-2022, 05:49 AM   #28
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QuoteOriginally posted by biz-engineer Quote
I bought the D-FA 70-210 last year based on advice from this forum, after asking if I should wait for the D-FA 70-300 or buy the D-FA 70-210. Forum member comments were that the HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR may never be released, not to wait for it, go for the 70-210 f4. So I purchased the D-FA 70-210 f4, and now the 70-300 is rumored
Why are you listening to panic mongers?

Why didn't you ask me? I would have told you, yes, the D FA 70-300 will most likely be released, no idea when - so go for the 70-210 and spare yourself the wait
03-15-2022, 09:19 AM - 1 Like   #29
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QuoteOriginally posted by othar Quote
While it's nice to see (hear of) some new(ish) lenses, I don't understand why any of them needs in lens SR.
Seems like a waste of R&D in my opinion, as there already is a SR system in the body (if it where a long tele lens, where IBIS is not as effective as with shorter lenses, then maybe, but 300mm is not that long).

edit: I've never tried a stabilized lens, but isn't it better to see in the viewfinder how unstable you actually are, so you have a direct feedback to improve your standing / technique?
There are some claiming that the stabilised image from the lens aids better autofocus results. If true, why not having it?
03-15-2022, 09:51 AM - 1 Like   #30
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QuoteOriginally posted by UncleVanya Quote
Stabilization doesn’t have to be always on. Some systems have it engage at the time of exposure in one mode. This saves power but can lead to framing errors.

In theory longer focal lengths are more effectively stabilized optically than via ibis. Perhaps this is a design that has some lineage with a third party that has made this lens with stabilization in the past and up-cycling that aspect of the design could make a lot of sense and allow for dual stabilization options.
Stabilization is always on, whether in lens or in body. It may not be active, but it is always turned on.
The first time I looked through a Nikon with a long lens and VR turned on was something of a revelation. I would be quite happy with in lens stabilization for longer telephotos.
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