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Forum: Canon, Nikon, Sony, and Other Camera Brands 03-01-2020, 03:57 PM  
AF tracking Fuji vs. Sony
Posted By WorksAsIntended
Replies: 35
Views: 2,429
I guessed you would come up with this, I was just not sure if you want to use the center point as most times recommended in this forum or an outside point (f you read my post before you anserwed you knew that already though), but I surely expected a less aggressive way. You supprise me once again and finally will not be bothered anymore.




When the camera is fast enough to keep complete track it does not matter anymore, for most situations there are cameras capable of that today.
Forum: Canon, Nikon, Sony, and Other Camera Brands 03-01-2020, 12:11 PM  
AF tracking Fuji vs. Sony
Posted By WorksAsIntended
Replies: 35
Views: 2,429
Well, I do not see the Canon being much better here, only slidly, but yeah, the camera is even better. Also quite expensive though. A lot of people got excited about the r5 because of the af performance the 1dxIII offers in live view.
About doing the same on Pentax:
As the face of the player out of the mid far enough that there is no af point on any Pentax many times, I highly doubt you can do anywhere close with the Pentax or any other dslr out there.
I would like to see a Pentax beat this performance, I really would. But I tried both myself and cannot see it being on the same level. However I would love to see if the Fuji is superiour to its competition. That would be great news for future improvements.
Forum: Pentax News and Rumors 04-07-2020, 09:00 AM  
HD Pentax-D FA★ 85mm f/1.4 SDM AW
Posted By WorksAsIntended
Replies: 1,078
Views: 98,627
Well, what do you expect people to talk about when there is almost no new information but a new thread everytime Pentax shows another minimal information bit.
Forum: Troubleshooting and Beginner Help 04-07-2020, 04:06 AM  
Disappointing photos on a K110D Comments appreciated
Posted By WorksAsIntended
Replies: 42
Views: 2,662
The price of a used kp is not at all comparable to the k110.
Forum: Photographic Industry and Professionals 04-06-2020, 01:02 AM  
CIPA Feb 2020: Mirrorless still worse than DSLR
Posted By WorksAsIntended
Replies: 53
Views: 3,269
It also has a very fast processor.
Even the slow (in terms of compute power) z7 manages 60fps, having double the compute power is not uncommon in high-end bodies now.
The sensors are fast enough these days, they are not "slow stills sensors". In fact, they come from the same wafers as video camera sensors in some cases.
The af pixels of the a9 II are gettinf indepent readouts from the other ones btw, so the total resolution of the sensor does not matter for this topic.
Forum: Pentax K-1 & K-1 II 03-29-2020, 05:18 AM  
K-1 What no RAW in Continous Shooting???
Posted By WorksAsIntended
Replies: 13
Views: 1,541
You should think of the buffer as kind of RAM. Technically there are differences, but it is quite close. The data are written to the card by the processor reading the data in the buffer, on newer implementations (CF-Express, XQD) even using the pci-e lanes, on sd-cards using a serial interface.

In any case, when you put data onto the sd-card the speeds you get are write speeds.

The block size is something like the minimal data portion. When it comes to filesystems it is the amount of storage in one adress, usually a multiple of the sector size by the storage medium. The term block size gets used quite unprecisely. I was talking about the "data package size" delivered to the card. The worst case would be to put very small junks of data on the card, than it will get really slow. The fastest writes are achieved with the biggest block sizes (unless you got a cache on the storage device that is to small to store a single block, but let's not make it too complicated).

The minimum write speed defined by the class is the minimal maximal with the card achievable write speed needed to put the class logo on the card. This means, a card of the class 10 can at least write 10 MB/s, but with big block sizes. If you make them smaller, the card can (and at some point will) get much slower than 10MB/s. Even very fast data center storage devices cannot keep 10MB/s at 4k block size.

With flash memory the read speeds are always faster than the write speeds. So if you buy a 90MB/s card, you will write slower than this. How much slower is not defined despite very unsufficiently by the class. You can either look for a manuifacturer telling this more precicesly or look for benchmarks of specific cards. However, the card slot of the camera can (and does) also limit the speed. There are cards on the market faster than what a K1 can deliver.
Forum: Pentax K-1 & K-1 II 03-29-2020, 12:26 AM  
K-1 What no RAW in Continous Shooting???
Posted By WorksAsIntended
Replies: 13
Views: 1,541
The speed written on it refers to read speed with big block sizes.
Forum: Pentax K-1 & K-1 II 03-28-2020, 07:35 AM  
K-1 What no RAW in Continous Shooting???
Posted By WorksAsIntended
Replies: 13
Views: 1,541
About the sds:
You won't see much difference between a 90MB/s and a 170MB/s card, only marginal with the K1.
Forum: Pentax News and Rumors 03-22-2020, 10:06 AM  
Ten more lenses in the pipeline.
Posted By WorksAsIntended
Replies: 352
Views: 50,737
Or just use the DA560?
Forum: General Talk 03-19-2020, 10:28 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
No, the mathematical model is not that stupid. Of course there is a assumed dark number going into it.
Despite, the flue, if it would come that quickly, would be a pandemic too. Mortality in Italy spikes because the hospitals cannot handle it anymore. If we have the same overload in other areas, mortality will spike too. Than of course there are those people dying of hard infarct that would survive if there were a free bed at intensive care, etc.
The whole, calm down, it's not worse than the flue song does not get the point of the threat, not at all.

---------- Post added 03-19-20 at 10:33 AM ----------


A good point, the scientist makes a statement with known assumptions and boundary conditions, the press often takes the result free of its context as general thesis. One of the reason so many people loat trust in science is this mechanism. Most of the time something "got proved wrong", the boundary conditions are just different ones.
Forum: General Talk 03-21-2020, 07:15 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
What truly should be taught at school is this simple table

pico -12
nano -9
micro -6
milli -3
kilo 3
mega 6
giga 9
peta 12


Btw, most red lasers are not at 632.8nm anymore. Red HeNe lasers are, but laser pointers using laser LEDs are usually closer towards 650nm. These days the diodes are much more common.
Forum: General Talk 03-20-2020, 09:21 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
This is why data are generally only handled with relevant information. The exact city is not part of it most times.
Forum: General Talk 03-20-2020, 03:27 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Forum: Product Suggestions and Feedback 03-19-2020, 11:59 PM  
Dynamic Range Mode: Message to Ricoh
Posted By WorksAsIntended
Replies: 37
Views: 2,474
No, linearity does not mean a 1 to 1 transition, there can be any linearity factor. y = photoncount is as linear as y = 0001 * photon count. The last thing is closer to what happens. The photon count gets rounded to quantities of mutiple thousands because the "bad" counting resolution of the the single pixxel. So with a better sensor at same dynamic range (!) you need a higher bandwidth to store the data without loosing any.
As long as the data resolution is not higher than the quantum parameter there is real data to store. The very basic of digital processing.
The example of course was a very specific situation how a range of 1EV for an example amount of photons (and exposure) could be stored in 14bit, completly linear. With another amount of photons the storage would be different. Of course this is only a single example and not exactly achievable as exposure.
Of course in the processing the quantum parameter is the amount of different levels of current measurable. Current is electrons per time and the amount of electrons is x*photons on a linear cell.
Forum: General Talk 03-19-2020, 11:49 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Anonymous data are an option though and are used on a daily bases (I am not a lawyer but worked with medical data from different countries many times).
Forum: General Talk 03-19-2020, 05:43 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Its more than speculation. We know that the DNA found now is identical to the one found at the beginning in China, which is remarkable by itself. We also know that after artificially copying the virus the DNA is again extremly stable and can be reproduced thousands of times.
Influenza A or Noro already start to have significant variation after 1000 iterations.
Its not that we do know nothing. There are indicators. The thinf with mutations however is, that it's only a probability. In theory a single mutation can cause a new spread, or trillions do nothing. Still, the probability at the current state seems lower than with some other seasonal viruses.
The original Sars was pretty stable too, btw.
Also, the spreading is something we indeed do NOT know exactly. I wrote this before, simulations vary immensly with different models and real world data do not fit to each other yet, although it is not a different variation of covid-19.
Forum: General Talk 03-19-2020, 03:14 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Well, yes and no. It is not about not getting infected, it is about people not all getting infected at the same time so the hospitals do not get overloaded.

So IF (and this is where the "yes" part comes into play, because currently no model is that good at predicting the spread rendering the decissions bs indeed) a lighter restriction is enough to slow it down sufficiantly for the hospitals to work through all patients it is ok to only restrict it in some areas.


The issue is, people making decissions that do not know enough about the topic, a common problem of politics. In the Netherlands they want to build up immunity in the young generation by only sepperating the old ones. At this point there is no clear evidence if immunity from this virus is achievable at all. Further problems are the only about 1000 beds for intensive care for 18 million people in the Netherlands, that have over 80% usage without the virus already. So even the young generation with much less complications will not be able to get enough room in the hospital. Why is it like this? Because a single consultant told the premier its the "current state of science" and the best thing to do.

This is an interesting thought, but there is at this point not a single studie showing enough evidence and this is certainly not the current state of pandemic sciences, only a very niche thing.

I am not saying this has to be wrong for sure, but this is like going all in with 15% aquity against a poker player that calls for sure.
Forum: General Talk 03-19-2020, 04:12 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Of course this is right. It currently looks like this particular virus is rather stable and does not mutate quickly. In fact, this is a very significant property of this virus. This does not mean there won't be mutations, but at least that they are rising more slowly than with the flue. Of course, as with pretty much any statement about this virus, take it with a grain of salt. The time is way to short to have any kind of scientifictly prooven knowledge, it is alway just an indication at the moment.
Forum: General Talk 03-18-2020, 10:22 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
At least rhesus monkeys seem to be immune after the infection is over, which hopefully means humans will be immune too. Still no sufficient evidence of course.
Forum: General Talk 03-17-2020, 12:25 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Exactly like this. I will need to use cloth diapers for my month old tomorrow if they won't restock today. Let's see.
Forum: General Talk 03-15-2020, 05:53 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Those boxes are called humans, some contain it, others don't. Unfortunately (?) selling those boxes is forbidden in most countries.
Forum: General Talk 03-15-2020, 05:05 AM  
Coronavirus
Posted By WorksAsIntended
Replies: 4,113
Views: 160,596
Well, me and my family already failed miserably on that...
Forum: Canon, Nikon, Sony, and Other Camera Brands 03-13-2020, 09:22 AM  
Going into Micro Four Thirds - I'm getting an Olympus OM-D E-M1 Mark III
Posted By WorksAsIntended
Replies: 120
Views: 8,801
Yes, there is a single aspect of af where the Pentax is really good at. If this is the one you use, great indeed, you got the system right for you (if you use one of the very few lenses that currently make use of it). If not, if you use af-c, tracking or multi point af or anything related
to face detectio, eye detection etc, well, that's where other manufacturers are better at the moment.
The op obviously was looking for that part and found it to be better with his new camera. No reason to make such a fuzz about it.
Forum: Pentax SLR Lens Discussion 12-28-2019, 12:50 PM  
The Bokeh Club
Posted By WorksAsIntended
Replies: 25,874
Views: 2,354,566
Chrismas can be fascinating for our little fellows.
Forum: Canon, Nikon, Sony, and Other Camera Brands 03-13-2020, 09:34 AM  
Going into Micro Four Thirds - I'm getting an Olympus OM-D E-M1 Mark III
Posted By WorksAsIntended
Replies: 120
Views: 8,801
This is why I said the k3ii is the faster camera. The kp surely has its benefits too and is cheaper than most other cameras I would take into consideration.
I personally decided for the k3-II and K1-II for this reason (not a bird shooter though).

---------- Post added 03-13-20 at 09:35 AM ----------



To be honest, the last time I missed details on a picture due to the camera is quite some years and sensor generations ago. Modern sensors are pretty good.
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