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Forum: Pentax News and Rumors 1 Hour Ago  
Ricoh GRZ coming soon?
Posted By Kunzite
Replies: 62
Views: 4,265
If they do, would you buy them BOTH? :rolleyes:
I don't think you would buy any of them. Given real world restrictions - the G1 X Mark III's lens is not slow, is as big as they could put into the camera - there will be room for nitpicking... and then, there's the price issue.
A "24-100" f/2.8-3.5 would be significantly larger, and there's nothing Ricoh Imaging could do about that.

Do you remember the film era compacts? With their f/8-11 (at the tele end) zooms? Those were slow.
Forum: Pentax News and Rumors 4 Hours Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
Sorry, I wasn't clear.
Pentax Imaging Systems was what Ricoh bought from Hoya; and it included stuff other than consumer cameras (e.g. security products).
The consumer products part was included in Pentax Ricoh Imaging (later renamed to Ricoh Imaging). Other parts were transferred to other Ricoh sectors.
Forum: Pentax News and Rumors 17 Hours Ago  
D-FA* 85mm f1.4 also coming
Posted By Kunzite
Replies: 1,103
Views: 81,677
The "innovation" line - K-S1, K-S2 - was merged back into mainstream, AFAIK. It had nothing to do with Theta.
Forum: Pentax News and Rumors 18 Hours Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
Not all of Pentax Imaging Systems was included in Ricoh Imaging.
Forum: Pentax News and Rumors 18 Hours Ago  
D-FA* 85mm f1.4 also coming
Posted By Kunzite
Replies: 1,103
Views: 81,677
Ricoh Imaging is part of Smart Vision, if not the Smart Vision.
Forum: Pentax News and Rumors 1 Day Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
No problem. I barely can understand anything from them.
I'm a bit disappointed, though... having machine vision and industrial apps patents under Ricoh Imaging would've been interesting; but, RI is for consumer products.
Forum: Pentax News and Rumors 1 Day Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
Jeff, I'll ask again: which of the patents are related to machine vision and industrial applications?
Let's take the first 15 (most recently published actually), the first page. Please note that I've only skimped through them; but I can link the following to digital cameras and even SLRs/Pentax:
1. JP-A- 2017-187785 - a zoom lens, examples given being ~80-150mm f/4.5 FF (if I'm not mistaken)
2. JP-A- 2017-188804 - something sensor related, about dark current noise suppression and reducing lag. To quote from the patent itself: "In the following, a digital single lens reflex camera will be described as an embodiment of the present invention."
3. JP-A- 2017-181699 - PLM lens barrel
4. JP-A- 2017-181717 - 5 axis SR
5. JP-A- 2017-183998 - compensating for defective pixels - digital cameras are referred to in the patent
6. JP-A- 2017-184600 - also SR?
7. JP-A- 2017-173801 - SR
8. JP-A- 2017-173802 - image tilt? SLR cameras are referred to in the patent
9. JP-A- 2017-161756 - optical (reflex) viewfinders
10. JP-A- 2017-161816 - camera on tripod

Others were too generic (anti-fogging lens coating, improved autofocus) or too hard to figure them out, but I didn't find any instance striking me as a "machine vision and industrial applications".
Forum: Pentax News and Rumors 1 Day Ago  
D-FA* 85mm f1.4 also coming
Posted By Kunzite
Replies: 1,103
Views: 81,677
That is too vague, especially what it means and what's the impact on Pentax.
Besides, if there were a "priority 1 and everything else could die" approach at Ricoh, they would make nothing other than copiers would be dead by now. Sorry, but it doesn't make sense.
Forum: Pentax News and Rumors 2 Days Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
The "not so much recently" might be related to a certain japanese blog - http://egami.blog.so-net.ne.jp/ - being taken offline.
Patents discussed in Photorumors and other places were taken from there.
Forum: Pentax News and Rumors 2 Days Ago  
D-FA* 85mm f1.4 also coming
Posted By Kunzite
Replies: 1,103
Views: 81,677
How much would you bet? :rolleyes: And how much do you know about "their plan"?
One could see in another thread how much work it takes to release competitive products. Be patient, and save money.
Forum: Pentax News and Rumors 2 Days Ago  
Where to find Ricoh Imaging patents
Posted By Kunzite
Replies: 28
Views: 998
Let's do it this way: which of the Ricoh Imaging patents are, or might be for "machine vision and industrial applications"? Just to make sure we're discussing about the same things.
I've only briefly read (or, tried to) some of the most recent patents and they were related to consumer cameras, some about DSLR cameras, some to the SR or lens barrels/PLM drive.
Forum: General Photography 4 Days Ago  
Does IBIS affect precise focusing and exposure metering?
Posted By Kunzite
Replies: 44
Views: 1,832
That was my point ;)
Forum: General Photography 4 Days Ago  
Does IBIS affect precise focusing and exposure metering?
Posted By Kunzite
Replies: 44
Views: 1,832
That's not what I'm saying - I'm simply differentiating the claimed impact on speed from the basic inability to track the subject. But, of course, it's all while hand holding.
For example, JimmyDranox was talking about tracking the subject using the center AF point and spot metering. Obviously, if you can't keep the AF point on the subject, you're not measuring the AF speed - as the AF won't work (it will try to focus on the sky).
The inability to track the subject using the center AF point and spot metering doesn't exactly depend on the light level anyway.

---------- Post added 13-10-17 at 02:51 AM ----------


Doesn't sound like a focus issue. SR kicking in when it is not needed won't change the focus at all.
Forum: General Photography 5 Days Ago  
Does IBIS affect precise focusing and exposure metering?
Posted By Kunzite
Replies: 44
Views: 1,832
With apologies if I'm repeating what was already said.
I've seen this claim on DPReview, usually some Canon user bashing Pentax' SR, or some clueless "internet expert" proving that he doesn't know what a SLR is. What I didn't see is any sort of proof.

First, the only way for SR to impact precise focusing and exposure, given the SLR design, is by using processing power. Since both the PDAF system and the metering system are independent, and fixed in relation to the camera body - there is otherwise no difference if the camera has a SR system or not.
I'd say the (negative) impact is negligible, if any. After all, we've seen improvements in AF speed as Pentax started using the SR.

About the OIS helping significantly with the AF, if it was true we would have proof - Canon and Nikon users observing a decrease in AF speed just by turning the IS/VR off. Same lens, same camera: it would be trivial to test. We have no proof of a positive impact, at least in normal situations.
Note: I'm talking specifically about the AF speed, not about easier hand holding. And of course the example with the plane is about hand holding. In very low light, close to the working limit, I have to keep the camera very stable so it will lock on the target instead of hunting; this is an edge case where OIS might help. This is still about hand holding.
By the way, I briefly tried OIS with Pentax, and my K-5 didn't focus like a D4 ;)

As for metering: I don't buy it. Given the working range, and how the metering system has a much coarser resolution than the imager, I don't see why we would get gross errors attributable to camera shake.
Long exposures are a red herring in this case; the exposure system works down to -3EV regardless of which ISO (and corresponding aperture and shutter speed) you're using. No matter what you do, you cannot convince the metering system to take seconds for a reading.
The actual proof of an impact would be in weird inaccuracies happening only when hand holding, but not with the camera on the tripod. I never noticed the metering going crazy in low light.

---------- Post added 12-10-17 at 02:16 AM ----------

As for "Why VR is built into the lens", the answer is obvious: because Nikon (and Canon) introduced stabilization before digital, with their film SLRs. There simply wasn't any alternative to OIS: moving the film to correct camera shake was not a practical option.
When digital came, their choice was already made.
Forum: Pentax News and Rumors 10-09-2017, 09:53 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
It was added in February, together with the D FA telephoto zoom IIRC.
Forum: Pentax News and Rumors 10-09-2017, 07:44 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
Second page, "Ultra Wide-Angle Single Focus Lens":
http://www.ricoh-imaging.co.jp/japan/products/lens/images/K_Mount_Lens.pdf
Forum: Pentax News and Rumors 10-09-2017, 06:17 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
Yes, I would not assume this either - but it's also not impossible.
It depends if they see the electronic aperture just as a way of making the 55-300's RE(tractable) design, or as the future of the K-mount line.
Forum: Pentax News and Rumors 10-09-2017, 05:59 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
There's something like that on the roadmap, see the Telephoto Zoom Lens on the second page:
http://www.ricoh-imaging.co.jp/japan/products/lens/images/K_Mount_Lens.pdf

As for its technical specs, we can only guess at this point.
Forum: Pentax News and Rumors 10-09-2017, 05:31 AM  
Ricoh GRZ coming soon?
Posted By Kunzite
Replies: 62
Views: 4,265
Probably that's "FF equivalent" and not the actual focal length.
Forum: Pentax News and Rumors 10-09-2017, 05:30 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
Yes, and let's not forget about the planned D FA (non-*) 70-300-ish lens; if we can trust the roadmap, it's too long to be a 70-200 f/4. All that's left is a wide zoom which is cheaper and smaller (and obviously slower) than the 15-30, and we'd have full "pro" and "budget" zoom lines.
I'm sure many would appreciate a third, f/4 zoom line, I would likely make use of it... I just don't think it's realistic (in the short term).

Dan is using the extensive Canon line to his advantage, so it's in line with my thoughts as well. More important, Ricoh Imaging agrees with us.
The slight disagreement is with the "fast primes" part, I don't want a fast ultra-wide as it would be huge and expensive (precisely the reason I don't have the 15-30). Fortunately, the ultra-wide on the roadmap is not a D FA*, so I assume it won't be an f/1.4.
The 35-ish DFA* might be f/1.4 as well.
Forum: Pentax News and Rumors 10-09-2017, 03:27 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
Pentax' solution for traveling light seems to be APS-C.
Pentax' solutions for uncompromising image quality are FF and medium format.

I don't think we should expect them to match what Canon/Nikon built in decades. Instead, we should use what they have to our advantage.
A 3 parallel lens lines - f/3.5-5.6, f/4, f/2.8 - is unrealistic IMO.

Of course, this approach doesn't work perfectly since certain key APS-C lenses weren't updated.
Forum: Pentax News and Rumors 10-08-2017, 01:33 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
Surprises, or perhaps expected things?
The D FA* primes are more than enough to justify such a response.
Forum: Pentax News and Rumors 10-06-2017, 09:28 AM  
DFA*50 1.4 coming
Posted By Kunzite
Replies: 1,770
Views: 128,769
I believe we are talking here about deliberate misinformation, not mere feelings.
So I'll return the question: if people posing as Pentax users are spreading deliberate misinformation in an attempt to cause FUD and we let them, how do you think the rest of the photography world feels?
Forum: Pentax News and Rumors 10-05-2017, 03:03 PM  
Financial Results:FY2018/03
Posted By Kunzite
Replies: 605
Views: 34,421
The CDAF of a compact works with different parameters than that of a large sensor camera. Sorting algorithms used on supercomputers might be quite different than that used on smartphones; at least smartphones don't pose problems with vectorization and parallelism. As for "cost" I'm probably thinking of some different meaning than what you have in mind...

FTR the K-01 wasn't the slowest focusing mirrorless of it's time.

No K products in 2011 is very relevant, it shows that they were operating under some tight constraints.
Forum: Pentax DSLR Discussion 10-05-2017, 01:58 PM  
DPReview High ISO Noise D850 vs K-1
Posted By Kunzite
Replies: 29
Views: 1,403
That's not the relevant parameter; an AA strength of 1 likely means no AA filter, and it will stay the same regardless of the AA simulator setting.
The relevant parameter is Shake Reduction. Using my own files, some possible values are:
Shake Reduction : On (AA simulation off)
Shake Reduction : Off
Shake Reduction : Off (AA simulation type 1) (8)
Shake Reduction : Off (AA simulation type 2) (16)
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