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Forum: Pentax News and Rumors 09-28-2019, 03:41 PM  
New zoom 70-200 F4
Posted By reh321
Replies: 599
Views: 54,237
Most interest seems to be focused on the DFA* 85 - I would expect a bigger market for the zoom, but people tend to drool over a perfect prime until they see the price.
Forum: Pentax DSLR Discussion 09-27-2019, 01:57 PM  
Price of new apsc flagship
Posted By stevebrot
Replies: 117
Views: 5,074
Compare to the Canon 7DII or Nikon D500 as well as the launch price of the KP (~$1100 USD in 2017). Anything shy of ~$1400 USD initial pricing is fantasy.


(...paid $1296 USD, body only, for my K-3 in April 2014 from Adorama...yes, it was still full price even six months after launch...)
Forum: Pentax News and Rumors 09-22-2019, 02:20 PM  
New K-series DSLR under development to be exhibited
Posted By Rondec
Replies: 2,767
Views: 170,128
I think you are right.

Pentax pays at least a little bit of attention to this Forum and they realized that people are getting really nervous about their future. They therefore took the unusual step of showing us "nothing." A camera that is semi-functional that we can't use, no hint as to details, specs or anything. And with this black object that is not yet completed, we have the one thing that we need most around here, HOPE.

Hope that Pentax cares about the K mount and SLRs. Hope that Pentax cares about making a better APS-C camera. Hope that none of us will need to buy a Sony camera in order to keep shooting our lenses.

Even if the end camera looks very different and has pretty average specs, we have, for the first time in several months solid, tangible evidence that there is light at the end of the tunnel.
Forum: Pentax News and Rumors 09-22-2019, 02:36 AM  
New K-series DSLR under development to be exhibited
Posted By Mike.P
Replies: 2,767
Views: 170,128
I was really hoping for a fully articulated or tilt touch screen on the next Pentax as it would be pretty useful to have. That was before I got the K1, Nikon D500 and Canon M5 and realised I don't actually use the screens on them at all apart from viewing.
Forum: Pentax News and Rumors 09-20-2019, 09:20 AM  
New K-series DSLR under development to be exhibited
Posted By Mistral75
Replies: 2,767
Views: 170,128
That gives us an indication of the time zone the trolls are living in. :)
Forum: Pentax News and Rumors 09-20-2019, 09:16 AM  
New K-series DSLR under development to be exhibited
Posted By stevebrot
Replies: 2,767
Views: 170,128
It is amazing how the tone of this thread changed once the trolls woke up. :o

Forum: Pentax News and Rumors 09-20-2019, 08:39 AM  
New K-series DSLR under development to be exhibited
Posted By stevebrot
Replies: 2,767
Views: 170,128
I guess that explains why the f/4 lens is on the roadmap and has a name ("HD Pentax-D FA 70-200mmF4") and was previously slated for 2019 release, now "2019 or later". The market exists for a Pentax lens the same as for the Canon and Nikon products. I, for one, am quite interested, and price break is not the major consideration.

Forum: Pentax News and Rumors 09-13-2019, 04:14 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By normhead
Replies: 676
Views: 32,940
I'd be interested in a K-3 successor, but my K-3 still works great. And with my camera use split between the K-1 and K-3, it's going to last quite awhile.
Forum: Pentax News and Rumors 09-13-2019, 03:41 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By Dartmoor Dave
Replies: 676
Views: 32,940
That's because there aren't enough buyers like you around to justify the costs of releasing a K3 successor yet. There are an awful lot of people around who have had cameras for the past couple of years that already do everything they want to do, at a quality that they're happy with, so why would they want the K3 successor even when it does come out?

And no, that doesn't mean that Pentax is doomed. It just means that the market has changed, and I think Pentax is one of the brands that has already accepted that and adjusted to the new reality.
Forum: Pentax News and Rumors 09-13-2019, 03:14 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By Kunzite
Replies: 676
Views: 32,940
It's the quiet(er) ones which are/will be buying.

Remember the ever present MILC requests? Most cases, the author should add, "not for me, I already have my Sony/Fuji/whatever".
Forum: Pentax News and Rumors 09-12-2019, 06:35 PM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By Kozlok
Replies: 676
Views: 32,940
I was looking at film cameras in the database, and saw phrases like “in production for 15 years”. I think we are just returning to normal.
Forum: Pentax News and Rumors 06-25-2019, 07:09 AM  
New Sony APS-C Sensor - 26MP
Posted By Rondec
Replies: 1,191
Views: 80,756
Just to go back to the beginning a bit, I have no idea on what sensor Pentax will use (probably not super important at this point), but my guess is that they have three projects going simultaneously. They are doing K3 II sequel, K-1 II sequel and 645z sequel. All will have same updated engine, same auto focus alogrithms and interface (probably some tweak of existing K-1/KP interface).

My guess would be that we will see the K3 II sequel first, followed by the 645, and finally the K-1 II sequel. By sharing the R and D across the cameras, they will be able to keep overall cost more reasonable and still have performance that exceeds past generation of cameras.

I tend to be optimistic, but I see the space between camera models as a positive, meaning there is real change coming, rather than a minor update like the K3 to K3 II that has been done in the past.
Forum: Pentax K-30 & K-50 06-27-2019, 01:50 AM  
A LITTLE BIT OF HISTORY: Development of the solenoid in Pentax cameras
Posted By photogem
Replies: 13
Views: 1,929
A little bit of history about the development of the solenoid in Pentax cameras up to the K-30:

The legendary patent named "Automatic Camera Shutter" was applied for July 30, 1968 and granted Jan. 4th, 1972.

You can down load the patent HERE

1. The first very simple solenoid I have found in the Pentax ME and ME-Super.

No permanent magnet yet but only a plunger and an electro-magnet to induce the magnetic force to pull the plunger:

It was in 1983 that Pentax introduced its first SLR which offered fully automatic exposure ("program") mode when coupled with a matching Pentax-A series lens:
The Pentax Super-A (Super Program), followed by the Program Plus (Program-A) in 1984.

This was the first time solenoids where used the way we know it until today up to the Pentax K-70.

2. A very nicely built and sophisticated solenoid:

Not yet a rare-earth-magnet as later used but an alnico-magnet, i.e. an alloy mainly of al-uminium, ni-ckel, co-balt, invented by T.Mishima 1931 in Japan:


The solenoid in action:

The force of this alnico magnet pulled a kind of cap connected to the leaver which moved the aperture-mechanism and kept it in place.
Taking a picture, the two coils acting as an electro-magnet receive 3 Volts DC from the cameras battery ( 2 x 1,5V SR44 or 1 x 3-V CR1108).
Those 2 coils cancelled the magnetic force of the permanent magnet and the top-cap opened, the leaver moved. Impedance was 14,3 ohms.

The electro-magnetic coils:

The partnumber given was G-100:

This partnumber G-100 remained the same at least up to the Pentax K20D and K200D, possibly later on as well but I have not yet seen a service manual of those.
Samsung named it G-100 as well in the GX1, GX2, GX10 and GX20.

The next solenoid as we know it was introduced in some the MZ-Series (MZ50, MZ6, MZ7 and a few others up to the analoge *ist). It looks identical to those used in the later DSLR bodies and had almost the same impedance. But its holding-force and body thickness was slightly different. Some which I and others had found had opposite polarity as well but others applied it with success in DSLR bodies, so it looks like that there were different versions used. Another type of solenoid was used as well for example in the Pentax MZ5/n. But Pentax didn't keep it up later on.

3. Here a photo showing the 3.rd version of a solenoid, this one I took from a MZ50 tested in a K30:

One can see, the plunger tilts slightly in relation to the round part of the leaver which it moves.

4. With the introduction of the Pentax *ist D came the made in Japan white solenoid which never failed in any of those bodies up to the Pentax K-r:

The manufacturer of those solenoids was Shinmei, Japan... also manufacturing similar solenoids for ALPS and Matsushita.

When Shinmei moved production to China, difficulties started. The material of the body changed to green and instead of using PTFE (teflon) it was now made out of PET. The alloy of the plunger changed as well. This solenoid was first tried in the flash circuit of the Pentax K100D, K200D, K-m, K-x and K-r but as far as I know mainly in those delivered to Europe. The solenoid used for the aperture was still the white made in Japan unit. The test period of this China made green solenoid was about 6 years (the K100D was introduced 2006, the K-30 introduced 6 years later in 2012). So 6 years without trouble, enough to use it for the aperture control:

5. The green made in China solenoid:

But it turned out to be the beginning of difficulties, due to several reasons described here as well the plunger of this solenoid often remained closed, i.e. it stuck the diaphragm of the lens could not open and this led what is now called "aperture problem", "dark-exposure-problems" etc.

For quite a long time it was not yet clear that it was the solenoid alone, the complete "diaphragm-control-block" was exchanged or possibly just the whole camera because exchange of the block was very work+time intensive. But then due to all the research mainly here in this forum (!) Pentax realized that it was the solenoid itself. It was about Dec. 2015 that Ricoh started to modify the solenoid. The made in Japan solenoid was no longer available, machines were already a long time in China, the plants in Japan closed.

But some early KS-1's, K-S2's and many K-50's still used the earlier China-made green solenoid and some of them failed.

As far as I can tell the green solenoid now used in the Pentax K-70 is superior to the early version!

Close-up photos show a very nicely machined plunger with a very smooth surface:

Very different to the surface of a solenoid which was filed and sanded:

and thus starts to corrode/rust very badly.

With the introduction of the Pentax K7 Pentax developed a new design, using a robust stepper-motor instead of a solenoid.
This design was used until now in the following DSLR Pentax: K7, K5, K3, KP, K1 and also in the K-01. HERE you can see it in the K-01.
Forum: Pentax DSLR Discussion 06-25-2019, 07:29 PM  
Who knows the actually information about new aps-c flagship?
Posted By stihlmania
Replies: 48
Views: 3,951
My K3-II images continue improve with every week. I really do not think it is myself but the camera that gets better with age. I can wait for the K3 successor as my K3-II can take incredible images with a good a $7,000 camera can.... but I look forward for Pentax next aspc flagship to be released, when it's ready! I wish to have 2 top of the line Pentax cameras with the same layout and features. The K-3/ K3-II layout is what I like/ want. What I am really waiting for is a Pentax auto focus 400 f2.8.....( every lens I have ever had is a Pentax, no 3rd party for me )....... as many of you may have seen ( or maybe you have not seen ) some of my posts on this topic, nothing has changed in that respect......
Forum: Pentax DSLR Discussion 06-25-2019, 07:19 AM  
I'm thinking of selling all my Pentax stuff and moving elsewhere.
Posted By Adam
Replies: 137
Views: 6,925
I actually think Pentax is outsmarting some of the other players, while also taking advantage of its relatively small size (and therefore lower operating costs) to avoid losing money in a shrinking core market. The company has realized that releasing new bodies every year (or even 2) is not the way to go these days, and it's skeptical about mirrorless, which in Pentax's case doesn't bring anything to the table that a DSLR can't do.

We've seen new tech developments emerging through the GR III and Theta Z1, and it's only a matter of time before we see a substantially updated DSLR to replace the K-3 II. On the other hand, re-spinning the K-1/KP's tech into a K-3-like body would probably not sell well enough to be worth it.

So, to sum up, Pentax isn't going anywhere- but if the slower pace of releases isn't keeping up with your individual needs when it comes to camera/lens hardware, then I'd say it might be reasonable to jump ship. However, this might be a short-term thing, because I think the industry as a whole will follow suit and slow down camera releases in the long term.
Forum: Photographic Industry and Professionals 05-22-2019, 09:52 AM  
Denial or truth?
Posted By beachboy2
Replies: 247
Views: 7,914
I'm still enjoying my Pentax mirror-less Q.
Forum: Pentax News and Rumors 05-18-2019, 01:21 PM  
Rumours of HD Pentax-D FA 50-300mm f/4.5-5.6/6.3
Posted By Rondec
Replies: 97
Views: 11,780
I'm always amused by how simple a thing people think lens design is. "A simple tweak" is never just that simple. It's more akin to taking your vehicle to the dealer and asking if they can install a bigger windshield. The reality is that the lens body, motor and all the parts have to work together to produce good results. It isn't really the optical design part that takes so much time -- more the part where they figure out the engineering and manufacturing portions of it, turn out a few lenses and tweak the process a little more.

That doesn't mean that Pentax isn't going to come out with a 70-300 variable aperture zoom, but I doubt they will use an existing APS-C lens as a starting place.
Forum: Pentax SLR Lens Discussion 01-31-2019, 03:13 PM  
Revamped lenses? Yep but with at least WR and rounded iris!
Posted By pschlute
Replies: 42
Views: 2,506
I disagree with you here. Pentax can either produce:

1 a brand new 35mm with different blades and weather sealing and electronic aperture and focus motor (which is in the pipeline).

2. Nothing at present

3. A revamp of an old model with updated coatings at a low price.

What they cannot do is produce a "revamp" of the 35mm f2 and add features like weather sealing aperture blade changes. This would be a new model, requiring total redesign. The development team would say "get in the queue", and the management team would say "we need to sell that for $1000 +"
Forum: Pentax SLR Lens Discussion 01-31-2019, 02:40 PM  
Revamped lenses? Yep but with at least WR and rounded iris!
Posted By BigMackCam
Replies: 42
Views: 2,506
I doubt the lens is aimed at existing FA35/2 owners. Whilst the upgrades are undoubtedly worthwhile, they're not enough to warrant switching. But for those who don't own the older modeal and are looking for a reasonably fast lens at this focal length, whether for full frame or (in my case) APS-C, it's a very sensibly priced option with a reputable heritage...
Forum: Pentax News and Rumors 01-29-2019, 12:43 PM  
11-18 and revamped 35mm F2 on january 31?
Posted By repaap
Replies: 1,044
Views: 69,573
Well little improving old formula is not dishonoring old desing, it is updating. About WR one more blade and DC motor, it might not be needed, but making those blades curved is just modern thing, not dishonoring anyone.

I'd say this thing of remake FA 20, 28, 35, 50, heck, even 135 would be marvelous news! Lot of people enjoy of using those old things, but are little put of possibility of misangliments, lens falling in peaces, ect. Resolving fringing and improve Bokeh and sharpnes, viola! And they would have amazing lens lineup, with possibility of having stateof art 35, 50, 85/1,4 and zooms to go along!

---------- Post added 01-29-19 at 21:44 ----------

not having atleast curved blades it would be strange indeed.
Forum: Pentax News and Rumors 01-29-2019, 11:47 AM  
11-18 and revamped 35mm F2 on january 31?
Posted By monochrome
Replies: 1,044
Views: 69,573
The 35/2 and 50/1.4 still sell in Japan. They’re probably out of stock on the 35/2 so they need to run a batch. Adding 20 / 28 / 35 / 50 with HD coatings = Proven tech on (some of them) cult lenses and would be an interesting take, though DPR would absolutely FLAME them. Update to this new barrel with HD and where appropriate rounded blades, (FA20/2.8), F28/2.8, F50/1.7. Keep the FA 50/1.4 until out then make it a Limited and update the DA50/1.8 to D FA.
Forum: Pentax News and Rumors 01-29-2019, 11:34 AM  
11-18 and revamped 35mm F2 on january 31?
Posted By Wheatfield
Replies: 1,044
Views: 69,573
Internal combustion engines are 80s tech as well, but every car being made nowadays still comes equipped with one.
That's 1880s tech, btw.
Forum: Pentax DSLR Discussion 11-02-2018, 10:28 AM  
Hedging your bets, or how do I not stress about buying Pentax lenses?
Posted By Docrwm
Replies: 35
Views: 1,847
Is your camera system an investment or a tool? If you want DA primes then get them. Life's too short.
Forum: Pentax News and Rumors 10-13-2018, 08:56 AM  
K3ii replacement
Posted By Mistral75
Replies: 2,451
Views: 188,168
Both of you are mean to this armchair expert.
Forum: Pentax Medium Format 10-05-2018, 09:04 PM  
Lets talk 645z image editing software
Posted By runswithsizzers
Replies: 27
Views: 2,209
Why would that camera require anything different in a photo editor vs. any other camera?

If you are not happy with the Lightroom competitors, maybe it's time to try the real thing? Say what you want about the Lightroom subscription model, but it's always up-to-date, and it's still the one all the others are compared to. I have been spending a LOT of time in Lightroom + Photoshop (subscription) and I am still discovering new layers of effective tools to do what needs to be done.

In addition to Lightoom+Photoshop's editing capabilities, consider the vast ecosystem of tutorials, plug-ins, and pre-sets, and it's a pretty good work environment. If you can afford to shoot a Pentax 645z, you can afford a Lightroom subscription.

Yeah, I know, "It's not the money, but the principle..."

I am not thrilled to be paying Adobe every month, either - but the same is true about paying for my cell phone and internet service. It's just part of the cost of getting out of bed every morning. The only alternative being to get off the grid, move into a school bus parked out in the woods, and eating nothing that doesn't come out of my garden or chicken coop.

That said, I assume you have put in the considerable amount of time which is needed to learn any capable editing software before deciding you don't like it? For me, it would be pointless to jump around from editor to editor after trying each one for only a few days, because it takes me months (if not years) to really learn how to use these powerful tools.
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