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Forum: Pentax News and Rumors 1 Day Ago  
New information about new flagship's selling date
Posted By beholder3
Replies: 378
Views: 11,792
A modern mini screen viewfinder replacement costs as much as $460: Sony Unveils EVF with 1.6x Resolution Increase and 240fps Refresh Rate

I'd hazard the guess that actually the mini screen is the most expensive part of a DSLM unless someone can prove me wrong.

I am also not buying any claims that older mini screens cost that much less for modern lower end DSLM as there is no evidence supporting this.
Forum: Photographic Industry and Professionals 1 Day Ago  
2019 sales of Japanese camera manufacturers
Posted By beholder3
Replies: 24
Views: 848
It is worthwhile noting that Leica with roughly 48 billion yen sales per full year is somewhere between the size of Fuji and Olympus.
Forum: Photographic Industry and Professionals 3 Days Ago  
The hyenas are out...
Posted By beholder3
Replies: 19
Views: 974
It could well be a simple FUD way to get rid of mFT competition; spread by a marketing/propaganda expert.

The numbers are bad everywhere.

They all struggle badly and might go down in the next few years. Maybe some of them are so desperate that they want to appear as the safe haven by making others (here Olympus) look unsafe.
Forum: Photographic Industry and Professionals 4 Days Ago  
Nikon imaging forecasting first year of losses
Posted By beholder3
Replies: 30
Views: 1,003
For one it is interesting to see that even today they say that they have only subpar hold on the consumer hobbyist market.
This Segments share of the market is larger than nikon users share.

I wonder what a Nikon Executive would answer if he would have to explain how Nikon wants to gain tomorrows customers in the mid long term.

While to a noob it may seem a good idea to focus on wealthy enthusiast amateurs, this segment will die some day if no new blood is injected.

With the current strategy where they in the mid term will not focus on the cheaper side loeer end, this means they expect a smartphone hipster who owns a phone with built in three prime lenses in a $600 phone (where the owner probably rates this camera plus lenses at around $100) to jump to a $2000 Z6 entry level FF camera plus around $3000 for lenses.

No way that will be sustainable. That will cut them off from new joiners.
Forum: Photographic Industry and Professionals 4 Days Ago  
Nikon imaging forecasting first year of losses
Posted By beholder3
Replies: 30
Views: 1,003
Nikon is joining mFT Olympus with their camera/lens business being forecast for the current financial year downwards and into the loss zone.

Nikon expect to see 10 billion yen losses for the current financial year.

"OP suffers from sales unit reduction, product mix change, and Euro FX impact"


"Imaging Products Business: Business environment has deteriorated further as market shrinkage
accelerates and competition intensifies. Increased costs from Z-mount system lineup expansion
also a burden.
"
Mirrorless is less the saviour than they hoped for:
"-Market deterioration in DCIL including ML cameras is worse than expected.
- Sales plan for ML cameras was overestimated."


Is that a signal to invest into a new Z mount now, seeing the still outrageous prices and questionable advantages?
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 5 Days Ago  
Nikon Z 58mm 0.95 S Noct (low performance) review ...
Posted By beholder3
Replies: 13
Views: 369
The tester in the forum describes the manual focus to not be very smooth and make audible noise when turning the focus ring. As he says, much worse than a Zeiss lens.

He states that this is the worst focus breathing of the existing Z lenses so far.

Then you have the downside of the electric mirroless lens as well for videographers: while there is a lens ring to adjust aperture, the electronics still control it in a "clicked" way, so it closes at defined 1/3 stop steps and not smooth "declicked" as you can have with a lens with physical aperture control and ring.

All three of the above are not exactly "cinema".

If you look at the intense and widespread "cat eyes" bokehhighlights which are visible sometimes even directly around the main subject then that is a problem as well. https://2.img-dpreview.com/files/p/TS1800x1200~sample_galleries/0388005837/4761176934.jpg
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 6 Days Ago  
Nikon Z 58mm 0.95 S Noct (low performance) review ...
Posted By beholder3
Replies: 13
Views: 369
For 9x the price of a DFA* 50 and 2x the weight here some review results ;):

Nikon Z 58mm 0.95 S Noct

Image Quality

One serious weakness is green / magenta fringing in front and behind of the point of focus, which - depending on subject choice shooting conditions - can get seriously distracting.

You can also see the focus shift it suffers from.

https://www.cameralabs.com/wp-content/uploads/2019/11/loca_NikonZ58f0-95Noct_95-14-20_66080.jpg

Corners are seriously soft, so we have to ask if this lens is a modern design.

See the corners stopped down more than a full stop to F1.4: as the rightmost image here (needs log in): DSLR-Forum

Here you see the 9,000 EUR, 2 kg wide open softness (needs log in): DSLR-Forum

Key takeaway:
  • Longitudinal chromatic aberration (LoCA) is fairly severe and can be distracting

What’s not so easy to deal with, however, is longitudinal CA, which is where this lens is weakest. Many images captured at the widest apertures display fringing around defined edges, although this can also be seen in images where the is a more gradual transition between focused and defocused areas. Unlike lateral CA, longitudinal CA is virtually impossible to correct.

What we don't like
  • Noticeable LoCA at wide/medium apertures

  • Heavy and bulky, even by modern 58mm F1.4 lens standards

  • Costly

Conclusion

Two points make it less than perfect. First, there's the weight and cost. The Nikon Z 58mm 0.95 S Noct is one of a generation of heavy, expensive standard prime lenses that arguably started with the Sigma 50mm F1.4 Art.

Second, there's the pesky issue of longitudinal chromatic aberration, which - where you see it - is pretty hard to ignore. It's not unusual to see some LoCA from fast primes wide-open, but it's disappointing to still see it from an F1.4 lens at F4, especially when it's all but absent from cheaper (albeit useless to a dedicated Nikonian) competitors like the Pentax DFA* 50mm F1.4. Green halos around a portrait subject's hair, or the branches of an out of focus tree are annoying, at best. Likewise magenta highlights around the buttons on a shirt just in front of the focus plane of a portrait, or around the railings on a slightly defocused metal fence.

It clearly suffers from some field curvature as well, so you can not achieve optimal focus in the image center and at the edges at the same time.

The lens is not so great for videography as it suffers from quite a bit of focus breathing, 16% magnification change between close and far focus.

Final comment: The 9,000 EUR manual only lens suffered from quality control issues, being slightly decentered.
Forum: General Photography 10-28-2019, 12:52 AM  
The bogeyman will catch you: equivalence, magnification and noise/dynamic range ;-)
Posted By beholder3
Replies: 41
Views: 856
Yes, it would have been best if my sample could be an analogue film one, because digital versus film doesn't change anything at all, but the digital example misleads too easily to think about "pixels" where those are irrelevant. It is about areas.
I had to choose a digital example on a digital forum board.



Yes, absolutely. It doesn't change what is recorded on the sensor (which stays the same physical size). It hugely changes what (noise) we perceive.

Step back from the monitor 3 meters (reducing the magnification) and suddenly you will perceive the enlarged crop image from above will not be noisy any longer, but all black. Contrast up. Dynamic range up.

Or put your nose right to the screen in front of one of the bright white noise pixels (enlarging the image in your perception). Not black any longer. Contrast down. Dynamic range down.



Pixelcount is not of relevancy. The "magnification" only depends on the ratio between the physical size of the sensor and the physical size of the display medium.
An APSC sensor is 3,85 cm². A 27 inch 16:9 monitor is 201 cm². That means any image displayed is magnified 50x if displayed full screen fitting.
Forum: General Photography 10-27-2019, 08:56 AM  
The bogeyman will catch you: equivalence, magnification and noise/dynamic range ;-)
Posted By beholder3
Replies: 41
Views: 856
Let's try it in simple words with as little scientific language as possible with a simple simulation.

Remember that "dynamic range" in photography is the size of the spread between the brightest bits of information in a photo and the darkest bits.
Dynamic range - Wikipedia

What are the limiting factors at each end?
  • bright end:the sensor pixels at some point can not register more photons and are "full". The image area now is pure white and no more detail can be recovered.

  • dark: the (mostly random) noise in the really dark areas can grow so much that you are unable to get meaningful image subject information. The nerds call this signal-to-noise-ratio ("SNR") being very low. At SNR 1 (=1:1) it means you have as much good image information ("signal") as you have crappy noise.

So the space between clipping highlights and massive noise in the shadows is dynamic range.

Comparison setup to be realistic:
  1. Imagine the exact same exposure parameters to be used for both a large and a small sensor camera.
    For example it could be ISO 100, shutter 1 sec., aperture F/8 (not "equivalent") on both cameras.

  2. we ignore DoF for this question for now as it is about maximum dynamic range only

  3. Imagine shooting the absolute black subject. We do not need to worry about lenses here.

  4. To make the point very visually easy here, let us assume a major size difference between the sensors. Crop factor 8.

  5. Imagine both sensor have the exact same technology level and the exact same pixel size. So the individual pixel is technically the same.
    This means the pixels will clip to white at exactly the same brightness level. So the upper end of the dynamic range is the same for both sensors.

Look at what the small sensor has registered:



Hm. You might barely notice some little noise here.

Now let us take a look at what the large sensor has registered:



It is 8 times as wide and 8 times as high as the smaller sensor. To simulate the same technology, same exposure I just created a 8x8 mosaic from the smaller sensor. So both sensors work absolutely identical.

Still looking only very mildly noisy.


If you look at the files in 100% screen mode you will see proof that the noise is exactly the same on both per area (!).

User style option A)

And if you are a person who typically watches images as I have presented the two pieces above - with the display sizes as different as the sensor sizes - then this is it for you. Same dynamic range for both. No need to worry about "equivalency".

User style option B)

But actually this is not how the vast majority of people watch images. They typically look at both images on the same electronic device (screen) or in the same print size.

The latter obviously means you have to enlarge the crop 8 sensor image 8 times more. And this has quite an effect:

Left side: large sensor, right side small sensor




Squint your eyes a little bit and look at both images. You will see the noise on the crop 8 sensor is much worse.

This does show that the magnification path from sensor size to display size actually changes the perceived noise.

Magnifying an image means raising the noise level. This in itself means lowering the dynamic range by magnification.
Because larger sensors do need less magnification from sensor to display sizes the perceived noise is lower and the dynamic range higher with regards to the displayed image - while it stays the same per sensor area.

Yes, even while the small sensor image has the exact same level of noise per sensor area, the magnification from sensor to display makes it worse for the watching person. It's all about magnification.


Enjoy the discussions. :D
Forum: Photographic Industry and Professionals 10-13-2019, 04:45 AM  
CIPA shipments August 2019 - DSLR gaining marketshare
Posted By beholder3
Replies: 29
Views: 1,155
Quite irrelevant unless I was a producer/seller side marketing/advertisement person.


If my photography club has 10 members wit a K-30 and a lonely one with a Leica SL, I would laugh at anyone claiming Leica has a 70% share in our photography club. :D Same with CIPA figures.


I am reporting the preferences of the worldwide club of photographers.

---------- Post added 13th Oct 2019 at 13:57 ----------



+1

The share of DSLRs will inevitably be forced down in the long run by the maker's policy/advertising decisions, but demand simply is not there for the DSLM same-same results for more-more money.

DSLM models actively marketed/advertised freshly in 2019: 22 = 88%

DSLR models actively marketed/advertised freshly in 2019: 3 = 12%

A lot of r&d and advertising money burnt and few customers convinced to join the much hyped DSLM party.
Forum: Photographic Industry and Professionals 10-12-2019, 03:52 AM  
CIPA shipments August 2019 - DSLR gaining marketshare
Posted By beholder3
Replies: 29
Views: 1,155
Interesting to see DSLR sales still not being reached by DSLM. Actually the lead of DSLR vs DSLM widened again to 59% DSLR versus 41% DSLM.
Overall the industry saw a little upwards trend.
Forum: Pentax News and Rumors 10-10-2019, 04:09 AM  
New zoom 70-200 F4
Posted By beholder3
Replies: 831
Views: 64,262
Yes. Every lens which does not do focussing purely by extending the barrel has focus breathing, so pretty much all modern lenses have it other than select few macro lenses. The FA 77 mm princess is a surprising positive example with practically no focus breating. On the other side even expensive niche 200mm macros do have very visible focus breating.

All this doesnt stop a manufacturer from building a tube around the lens elements, so that tube doesnt seem to be extending from the outside and consumers then call it "internal".
Forum: Pentax News and Rumors 09-29-2019, 02:28 AM  
KP custom,DFA*85/1.4 CP+ Exhibit
Posted By beholder3
Replies: 592
Views: 49,498
If same space/distance: both combos create pretty much the SAME DoF (e.g. 9,8 vs 10,2 cm).
If same framing: FF/85 1.4 has about half the DoF of APSC/77 1.8.


Try it out here:

DOF simulator - Camera depth of field calculator with visual background blur and bokeh simulation.
Forum: Pentax News and Rumors 09-24-2019, 08:04 AM  
information about new APSC
Posted By beholder3
Replies: 990
Views: 48,813
Forum: Pentax News and Rumors 09-24-2019, 07:01 AM  
information about new APSC
Posted By beholder3
Replies: 990
Views: 48,813
Generally I think all readers of this forum would prefer it if a thread about a CAMERA stays a thread about a CAMERA.

All the dodging to other topics like specific lenses including comments the same posters have flooded the internet with again and again already does not provide any value add.

To be precise: This thread is specifically about a speculated sensor (same as the one used in the XT3, originally marketed at >1800 EUR, a camera model lacking any proper SR).

I beleive this sensor will add new features for those who want it, but it will be a little step back in the so far class leading image quality the KP provides.

Maximum dynamic range of the KP will not be reached again: Image comparison: Digital Photography Review
Forum: Pentax News and Rumors 09-24-2019, 05:49 AM  
information about new APSC
Posted By beholder3
Replies: 990
Views: 48,813
There ARE DC Ring motors. Asahiman hinted at such a drive in the dFAs.

Until someone opens his lens we will not know for sure.

BTW there are incredibly slow ring USM drives out there as well.
Forum: Pentax News and Rumors 09-14-2019, 03:44 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By beholder3
Replies: 709
Views: 36,879
Wasn't it already many weeks ago that someone told us here there won't be any new cameras this year just a special edition?

With the camera business being such a non-attractive market we all can be happy that Pentax is still there. If I was the CEO of Ricoh or Fuji or Panasonic or Olympus (those companies for whom the digital camera business is just an afterthought) I would have considered shutting it down.
Forum: Pentax News and Rumors 09-13-2019, 09:11 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By beholder3
Replies: 709
Views: 36,879
So true. :D

The same hilarious thing happens when you check the vocal complainers who clamor for exotic and expensive niche lenses. Lots of meh el-cheapo 3rd party lenses mixed with flea market manual glass. Ymeda. ;)
Forum: Pentax News and Rumors 09-11-2019, 04:36 AM  
Finally confirmation from Sigma
Posted By beholder3
Replies: 89
Views: 6,552
Sigma product quality is today still as crappy as it always was, the Art lenses are no different to the cheapo lenses from 10 years ago. Actual product quality is something different from spec sheets and manufacturer selected copy tests.

If you look at lens rentals copy variation charts you see it as well. Sigma is an expensive lottery even if you for some reason like their glass.
Forum: Pentax News and Rumors 09-10-2019, 02:28 AM  
Pentax terminated contracts with the retailer in Finland
Posted By beholder3
Replies: 14
Views: 3,028
You want to force your view of the situation on everyone else. That is the only problem.


It was not about "could not" but the shop owner "did not want to".
Forum: Pentax News and Rumors 09-09-2019, 11:15 PM  
Pentax terminated contracts with the retailer in Finland
Posted By beholder3
Replies: 14
Views: 3,028
I bet your retailer whined to you about him being the poor innocent miserable little good one and Pentax being evil. :lol:

Oldest camel market story of the world.
Forum: Photographic Industry and Professionals 09-09-2019, 08:01 AM  
Camera models today: lots still on the market
Posted By beholder3
Replies: 40
Views: 1,946
So today there are 171 ILC models (filtered for just apsc,ff, mft) out there and still forums are full of people who do not seem to be satisfied.
Forum: Photographic Industry and Professionals 09-05-2019, 10:53 AM  
Camera models today: lots still on the market
Posted By beholder3
Replies: 40
Views: 1,946
The Black Goat of the Woods with a Thousand Young will get you. :D
Forum: Photographic Industry and Professionals 09-05-2019, 12:08 AM  
Camera models today: lots still on the market
Posted By beholder3
Replies: 40
Views: 1,946
In many discussions the topic of new models comes up and recently we have people discussing manufacturers dropping model lines as well.

Here is some data on which ILC models are on sale brand new today in Germany:

Makers:
Canon (35) Fujifilm (19) Leica (18) Nikon (21) Olympus (24) Panasonic (19) Pentax (10) Sigma (1) Sony (22) Z Cam (2)

Type:
Rangefinder (12) Mirrorless (DSLM) (108) DSLR (DSLR) (51)
So there is twice as many DSLM models out there, but still only selling less than the DSLRs.
Sensor format:
APSC (79) FF (50) mFT (42)

Source:

https://www.heise.de/preisvergleich/?cat=dcamsp&xf=169_APS-C%7E169_Four-Thirds%7E169_Kleinbild%7E845_nur+Geh%E4use

Another data point was part of an German article which said in Germany only 14% of camera sales were FF- that is 1 FF for every 6 APSC + mFT.
This would suggest FF cameras are only commercially better for the makers if they make >600% of the profit contribution compared to a APSC/mFT camera. Now talk about ripping customers off. :cool:

This also shows that lots of old models are still out there competing with newer ones on price.
Forum: Photographic Industry and Professionals 09-04-2019, 02:48 AM  
Mirrorless vs DSLR falling behind some more (CIPA July 2019)
Posted By beholder3
Replies: 59
Views: 2,938
Very poor cost benefit ratio for mirrorless is causing the extended stagnancy.

I am sure the next 2 year's black friday sales on mirrorless will (have to) have massive discounts and the used market for latest models will grow with offers much below current street prices.
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