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Forum: Pentax News and Rumors 02-21-2012, 09:09 PM  
New K-01 mirrorless camera coming
Posted By dnas
Replies: 2,067
Views: 238,676
I tried the K-01 at CP+ in Yokohama, and it's not practical to fit even just the body in a shirt pocket.....


It's bulky and it's way too heavy to carry in a shirt pocket.

I was really looking forward to playing with this camera, and it was disappointed. The styling is way too boxy as well.
Forum: Pentax News and Rumors 02-21-2012, 08:55 PM  
CP+ show 2012
Posted By dnas
Replies: 96
Views: 11,578
In the last 4-5 years repairing cameras and lenses, I've seen around 8-10 Nikon 18-55mm lenses snapped off at the plastric bayonet mount flanges, and around 4-5 Canon ones.
Forum: General Talk 03-12-2011, 02:38 AM  
Quake In Japan
Posted By dnas
Replies: 27
Views: 7,824
I was in an office building in Yokohama (part of the Tokyo area) yesterday when the 8.9 quake struck.... it was difficult to stay on your feet!!!
Forum: Pentax News and Rumors 03-07-2011, 10:06 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
Olympus may have pioneered the micro 4/3 standard, but they didn't pioneer the release of micro 4/3 cameras and lenses.... Panasonic beat them by nine months with the first model, and three months with their second before Olympus got their act together.
Forum: Pentax News and Rumors 03-04-2011, 06:57 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
I cannot recall seeing Samsung cameras in any of the "try out" areas in all large electronic stores in Japan....
Forum: Pentax News and Rumors 03-01-2011, 05:19 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
One of the reasons for large volumes sales of end-of-cycle products like the Nikon D90 here in Japan, is that they are so heavily discounted. Consumers in Japan tend to like new models, so the old models often have very low prices. And this is not just the discount stores, as places like Bic or Yodobashi will often undercut discount stores to get rid of old models just as the new models get onto the shelves.

One other point, yes, I think many people in Japan will buy a 2nd mirrorless camera, because particularly Panasonic G series are a lot cheaper in Japan, than in the US (unlike many other brands)

For example, the Panasonic GF2 with 14mm F2.5 lens, can be found in the US(B&H) for around $700. In Japan, you can get the GF2 with 14mm F2.5 lens AND the 14-42mm lens for the same price.

If you get the old model GF1 body only, it's only $300.

And if you go for quality second hand, it's even cheaper in Japan (Japan has the cheapest second hand lenses in the world).
For example, I've seen almost new GF2 bodies, for as little as $260.


There also a reason that sales volumes can go up in December and June..... These are the months when the Japanese workers' bonus is paid!!! (it has nothing to do with Christmas!!!!)
Forum: Pentax News and Rumors 02-24-2011, 03:50 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
I am of the opinion that Pentax should join micro4/3, and out compete Olympus AND Panasonic at their own game. Using APS-C would tend to cannibalize their DSLR sales.

Pentax have a strong history of innovative designs and great pancake lenses, and this would fit nicely with micro4/3, along with an adapter that has aperture and AF control. (the adapter being partially retractable for pentax pancake lenses)

Going with their own mount with a 2.5 x crop would differentiate the cameras with the DSLRs, but will introduce yet another format. While legacy Pentax lenses could be used (with a suitable adapter), the 2.5 crop would give a 50mm lens a FOV of a 125mm lens (on a FF), and a 28mm -> 70mm, which is starting to make a range of existing lenses top heavy.
Forum: Pentax News and Rumors 02-22-2011, 06:14 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
Yes, I agree, µ43 is becoming an important standard, and quite a few lens makers are jumping on board.
It looks to me like it's going to stay around for quite some time.
Forum: Pentax News and Rumors 02-09-2011, 12:01 AM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
I saw this today at CP+ in Yokohama.

They said it was going to be a high end prime lens, but couldn't say what it would be. Also I asked them about the "modular" 4/3 / Micro 4/3 camera, and they said that wasn't going to happen.
I asked about a "Pro" micro 4/3 camera, and again no info.


I didn't see anything at the Pentax stand that would indicate a mirrorless ICL camera, nor at Nikon.
Forum: Pentax News and Rumors 02-08-2011, 03:23 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
Exactly!!!!

To say that micro 4/3 & 4/3 are "small" sensors is showing ignorance at best or deliberately misleading at worst.

And in fact, if you take the Panasonic GH2, the difference is even less:

m43 = 273 mm^2 (Pany GH2)
APSC = 355 mm^2, or 30% more than m43 (Nikon D7000)
FF = 864 mm^2 or 143% more than APSC


m43 = 273 mm^2 (Pany GH2)
APSC = 332 mm^2, or 22% more than m43 (Canon 600D)
FF = 864 mm^2 or 160% more than APSC




(and to compare to the orignal G1)

m43 = 224 mm^2 (Pany G1)
APSC = 355 mm^2, or 58% more than m43 (Nikon D7000)
FF = 864 mm^2 or 143% more than APSC


m43 = 224 mm^2 (Pany G1)
APSC = 332 mm^2, or 48% more than m43 (Canon 600D)
FF = 864 mm^2 or 160% more than APSC
Forum: Pentax News and Rumors 02-06-2011, 04:58 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
As for the format of one of the two (rumored) Pentax mirrorless cameras, I still maintain that micro 4/3 would be the best format to choose. Yes, they would have to pay a licencing fee to Pany/Oly, but that must more than offset the large cost of R&D to produce a completely new format themselves.

Micro 4/3 is also CLOSE to the film format size of the Pentax 110 format. These lenses could be used with a suitable adapter.

Pentax is an innovative camera manufacturer. I am sure they can produce a pocketable micro 4/3 camera, and pancake lens, smaller than anything Pany/Oly can produce.

They can also put R&D into an adapter for a fully coupled KA mount. (auto aperture, AF)
Forum: Pentax News and Rumors 02-06-2011, 04:51 PM  
Pentax EVIL NC-1 has smaller sensor than APS-C - your opinion?
Posted By dnas
Replies: 1,096
Views: 145,172
I'm sorry, but this statement is absurd.

BEFORE micro 4/3, both Panasonic and Olympus had DSLR cameras with 4/3 sensors. The 4/3 sensors have the same size (4/3" image circle) as micro 4/3, and they also have the 4:3 ratio. (4/3 doesn't mean the ratio, it means the image circle size of 4/3") The Panasonic GH1 & GH2 have a sensor with ratio of 16:9 still within the 4/3" image circle.

Since both Panasonic and Olympus already had DSLR cameras with 4/3 sensors, saying that they went to micro 4/3 to reduce costs, in manufacturing 4/3 sensors, is absurd. So the advent of micro 4/3 was NOT to "reduce costs through sensor manufacture at a 4:3 ratio", because they already had a 4/3 sensors in cameras!!!!

In 2008, Panasonic and Olympus had 3.8% of the DSLR market share. In 2010 between them, they had 15% of the interchangeable lens camera market in Japan, while Sony had 8.2%. In 2010, 4/3 DSLRs made up less than 0.1% of this market segment.

It's clear that they didn't invent micro 4/3 to reduce sensor costs, but to produce a new product that had some chance of capturing a bigger market share. And they were successful!!!!!!!
Forum: Pentax News and Rumors 02-03-2011, 03:49 PM  
The forthcoming Pentax Mirrorless Camera
Posted By dnas
Replies: 553
Views: 111,034
Should I state the obvious?

Pentax would have been better off using micro 4/3, with an innovative camera smaller than the Panasonic GF2.

And so much for the delights of being able to use Pentax lenses via an adapter.... even a 40mm pancake becomes too big to use on the camera.
Forum: Pentax News and Rumors 11-12-2010, 04:23 PM  
Once more... Pentax EVIL upcoming next spring
Posted By dnas
Replies: 129
Views: 26,476
I was thinking more in terms of how Panasonic could remove their shutter to make room, but either a slim shutter like the K-5 or a global shutter would serve the same purpose in a Pentax: To enable the bulk of a pancake or small zoom to be retracted into the body.

Regarding the retractable adapter, I would envisage that in the "shooting position", it would lock in a solid position. The owner would need to exercise some sense in using it with only smaller lenses in the retracted position, as there doesn't seem much point in retracting it for a 70-200mm lens.

Pentax has the opportunity to display some great innovations with their mirrorless camera.... they need to make it stand out against the competition.
Forum: Pentax News and Rumors 11-11-2010, 01:23 AM  
Once more... Pentax EVIL upcoming next spring
Posted By dnas
Replies: 129
Views: 26,476
Unlike DSLRs, if you look at the Panasonic µFT cameras, the shutter is located closer to the lens mount, and not just in front of the sensor/AA. (just as I have shown it in the diagrams) Probably 7-8mm in front of the Sensor/AA filter.... the shutter housing is 9mm from the flange.

Removal of the shutter would gain more like 70% of the space.



Forum: Pentax News and Rumors 11-10-2010, 05:37 PM  
Once more... Pentax EVIL upcoming next spring
Posted By dnas
Replies: 129
Views: 26,476
They could also make a PK adapter that is partially retractable. A Pentax pancake lens could retract into the adapter:




Not as tiny as above, but still just as small as any other(Panasonic/Olympus/Sony) mirrorless camera with their standard pancake attached!!
Forum: Pentax News and Rumors 11-10-2010, 05:25 PM  
Once more... Pentax EVIL upcoming next spring
Posted By dnas
Replies: 129
Views: 26,476
If Pentax don't go with micro43 (but I think they should, and make cameras that blow Panasonic & Olympus out of the water!!!), they STILL have to do something "innovative", which is what was being talked about a few months back.

This is pretty much the setup for any current mirrorless camera:


It still has a shutter, which takes up a fair bit of "free space" vacated by the mirrorbox. The lens still takes up a fair bit of space out in front of the camera, rendering it as not REALLY pocketable.


However, suppose Pentax produce a shutterless camera (this is on the cards as Kodak has a sensor that can support this, for example), then this frees up space inside the camera.
So now, interchangeable lenses can be designed to retract into the body when powered off, but extend to the active mode. It would mean that it WOULD be pocketable, would be innovative and would jump the others!!

Forum: Pentax News and Rumors 10-10-2010, 04:23 PM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
My line of reasoning regarding Pentax and Micro 4/3 runs like this.

Many people DO think that Pentax needs to have its own mirrorless camera. If they do so, they have three options:
1. Develop their own proprietary short flange distance mount. (in the same way that Sony has the NEX-3 & NEX-5, and the micro 4/3)
2. Develop their own K mount mirrorless camera to support current and past lenses. (in a similar way to the Sony A33 & A55)
3. Develop their own Micro 4/3 camera.


If they choose (1.), they must compete against 3 other proprietary formats. Two of these formats(Sony NEX & Micro4/3) already make up around 30% of 2010 sales in Japan. The Samsung NX sales are not good. Adding their own mount will have similar low sales, in my opinion, because it is then the 4th mirrorless format. There is a big risk of spending a lot of R&D money for little return.

If they choose (2.), they will cannibalize their DSLR segment, which they DON'T want to do.

If they choose (3.), there are options. Let's say they START by producing the Pentax K - micro 4/3 "smart" adapter I was talking about, which would have aperture stop down and focus motor built in. And the smart electronics would communicate with a micro 4/3 camera, & emulate CDAF so that AF would work with Pentax AF lenses.
Q. If you have a Pentax DSLR & Pentax lenses, and there was a Pentax K - micro 4/3 "smart" adapter available, would you be tempted to to buy a small micro 4/3 camera as a complement to your Pentax DSLR??
If so, then would you consider a Pentax micro 4/3 camera if it was available?


But why would Pentax produce such an adapter for a different camera format, without hope for camera sales? That would be a good question, but I think that it would test the market for Pentax, regarding lenses. The product itself wouldn't consume more R&D resources than a typical small P&S camera, and it would be innovative, and put Pentax on the micro 4/3 user's radar. Have a look at some of the micro 4/3 forums around.

For example, I have been a Pentax user for a long time. But I have other brand DSLRs, along with micro 4/3. If Pentax made such an adapter, I would be one of the first to buy it as a micro 4/3 user. It would show smart innovative lead, which would make me very inclined to buy a Pentax micro 4/3 camera, rather than Olympus or Panasonic.
Forum: Pentax News and Rumors 10-09-2010, 05:53 PM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
Exactly....

Why bother to hide anything???
Next people will be saying that JFK used a micro 4/3 camera....:p
Forum: Pentax News and Rumors 10-08-2010, 07:00 AM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
Not necessarily, they will be taking a bigger risk. But they could also gain more if they use MFT that can get bigger market share, than they would get with coming up with a unique product.
Forum: Pentax News and Rumors 10-08-2010, 06:00 AM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
Then they will lose market share with a unique mount.
Forum: Pentax News and Rumors 10-08-2010, 05:51 AM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
It - would - not - be - micro 4/3 :fedup:

This is why they smart electronics MUST be in the adapter.
Forum: Pentax News and Rumors 10-08-2010, 05:22 AM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
:lol:

Then it wouldn't be micro 4/3 !!!!!!!!
Forum: Pentax News and Rumors 10-07-2010, 11:58 PM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
You are mistaken about your definition of "steps" then. A step is a discrete change. The CDAF fps measurement is purely that.... it's just a measurement. It's used all the time in digital electronics, where it is called sampling.


You said this:



I'm sure any other person would interpret "CDAF always do AF in small steps" as small but discrete changes in the focusing action of the lens, not a continuous movement.



I am talking about ANY Pentax K mount AF lens being used with a Pentax AF -> micro4/3 adapter. Those lenses can't be "updated" because the older ones don't have any firmware!!!! Since these lenses can't communicate intelligently with the camera, the adapter has to have smart electronics to make it so that the lens/adapter combo looks like a lens that a micro 4/3 camera can communicate with. Otherwise, the Pentax lens would NOT autofocus AT ALL, with a micro 4/3 camera!!
Forum: Pentax News and Rumors 10-07-2010, 03:35 PM  
Pentax mirrorless/Evil system rumors!?
Posted By dnas
Replies: 323
Views: 83,000
No, it does not mean that there is one focus shift(and a stop) of the lens after each frame check. That would be like running a 100m race within your lane, but stopping every second to check that you're in your lane!!!!! You can do both at the same time: Run continuously AND check to make sure you're in your own lane while doing it!!!!

For starters, according to figures, the GH2 can focus lock in 0.1 seconds not ONE second. You have made the mistake of thinking that you need to COMPLETE all 120 frames before it will focus lock. The rate of 120fps vs 60 fps means that the check speed is twice as fast.

It works like this.

It does a contrast check, then moves the lens focus. Let's say it's been moving the lens CONTINUOUSLY for 0.07 sec, in which time it's done 8 frame checks.

It's found that the contrast increased on frames 1,2,3,4,5,7, but decreased on frame 8. So far it has made just one focus "step" but has been monitoring the contrast continuously.
The focusing changes direction (step 2). It finds on frame 9,10,11(with smaller focus movement speed, for more precision) in it increases contrast, but on frame 12, it decreases. Finally(the processor remembering the increases and decreases in contrast), it changes the focus direction again(step 3), and on frame 13 it increases contrast and on frame 14 it locks focus.

The total time for focus lock is 0.117 seconds, with a total of 3 focus steps, and NOT 14 focus steps.
In this case, if both the GH2 & the GH1 need 14 frames to focus lock, then while the GH2 locks in just over 0.1 seconds, the G1 would take more than 0.2 seconds.

I can see that you don't want to believe how it works, and that PDAF lenses can work on CDAF cameras with a suitable adapter. Smart electronics in the adapter can "trick" the camera into thinkng that it has a CDAF lens attached. The electronics then provides a suitable electronic control system to drive the focus motor, and feeds back the appropriate data to the camera to make it appear that it's a CDAF lens.
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