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Forum: Pentax K-3 III
09-08-2021, 12:04 AM
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Hello mate, I'm glad that you remember me! lol
Of course I will.
As I am korean, I'm poor at english, although I will try to visit more often, mate! :)
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Forum: Pentax K-3 III
08-24-2021, 09:37 PM
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Umm...
Deep learning is just for "Firmware development" not YOUR each Camera.
OpenCV: Cascade Classifier
OpenCV: samples/cpp/facedetect.cpp
for Face detection and Eye-AF, a Trained modeling data is needed. This data is already included in firmware binary file. (and will be any datafile of filesystem in DSLR Flash Memory).
and detection performance(speed,accuracy...) is depend on that modeling data is Well-trained or not.
Trained modeling data is made by (psudo code: ) train(many many face photos) method.
Mr.Wakashiro, Chief of Dev.team for PENTAX K-3 Mark III said "if needed, any firmware may be made for specific purpose like for airplane detection... " on CP+2021. This means same to my opinion.
btw, I'm sure PENTAX may use OpenCV by SC2000, just my think. lol
(Don't trust. PENTAX never officially said "we use SC2000". lol)
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Forum: Pentax K-3 III
08-06-2021, 09:27 AM
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I hope this video and pics that I take helps you to decide. :p
You Tube
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src="https://www.youtube.com/embed/kypa9U-eFLI?controls=1" allowfullscreen>
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Forum: Pentax K-3 III
04-08-2021, 08:51 AM
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Of course I will continue to visit, mate! :)
Your encouraged comment is impressed and moved in my heart. yes. for my job (i.e. I'm always reading english specification docs for working...lol) english skills is very important.
I promiss I NEVER leave PENTAX. and here. :)
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Forum: Pentax K-3 III
04-08-2021, 08:20 AM
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wow.
You're perfectly right. I agree 100%, mate!
especially linguistic expression, you're great! I need to learn english :(
---------- Post added 04-08-21 at 08:25 AM ----------
for all Pentaxians, I'm very happy because of your many encouragements. :)
due to I'm poor at english, I use many hours to write english. so, I don't want, but I may often omit answer. because, I have to do work for my company, my job :p (I'm an embedded engineer.)
I miss PentaxForums and you. and if you have any immediately questions or suggestion, you can visit, and play with everybody in Korean Pentax-community like here, it is below: http://www.pentaxclub.com of course, I'll come here frequently! I love you mates :)
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Forum: Pentax K-3 III
04-08-2021, 08:17 AM
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This damaged, I think, may be an shock causes damaged, for example, fall to the ground! xxxx!!! lol
If you're using preciously your lenses, I think it is OK. but if shocked like fall to the gound many times, this is no good. :(
and all lenses can be available Eye-AF. (of course KAF1.) just often invalid focused. but if KAF3and4, almost never.
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Forum: Pentax K-3 III
04-08-2021, 08:03 AM
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Thank you for your advise. Basically I agree.
just if use long long long~~ long time, 10years? 20years? screw get a little bit damage.(maybe?) but just possibility.
so I think you're right. mate!
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Forum: Pentax K-3 III
04-08-2021, 07:18 AM
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This is very good and import question! :)
K-3 Mark3 has very fast AF speed especially more than older camera like my K-1.
but, depend on many lenses, AF speed of that is very different.
if KAF4, that will be ulmost super-speeded. more than Nikon D6 !!! but it is only for Eye-AF by AE tracking. if subject detection is disabled, less than Nikon D6 :( (because SAFOX13 is less than A.Multi-CAM37K....)
if KAF3, not bad, very fast and good accuracy Eye-AF,too. All Pentaxians will be very glad and satisfied. just not 100% performance of K-3 Mark3.
If KAF2 (for SDM), I don't know because I don't have one. no tested yet. i think it may be good, just not 100% performance of K-3 Mark3.
If KAF1 (means lens doesn't have motor, just camera-AF motor via AF screw), very difficult problem.
Basically, all AF screw has a back-lash problem. except NEW one. this back-lash means damaged AF screw. so, latency is occured when focus position is already changed!!! this means invalid focus.
I know a hint about it. the Back-lask test method:
I think you already know about position of AF screw in KAF Mount.
if you have any Flat-headed screwdriver, you can rotate AF screw using that. (becareful!:p)
and you must look at focus-distance-mark, remember whether it was moved or not.
if lens focus hasn't be moved immediately although you have already rotated AF screw, this lens has an back-lash problem!
I also have an FA*85 lens. my FA*85.4 lens also has back-lash problem, a little bit.
when far-distance portrait picture, no problem.
but when near-distance, FA*85.4 is often shown invalid focus at AF-C of K-3 Mark3.
The new lens from manufactured time is OK. for exampe, an smc FA Limited lens that made by 2021 years, I'm sure it NEVER has Back-lash problem. because QC/QA of PENTAX is perfect.
but another smc FA Limited lens that made by 1997, it will be needed to check about that.
especially BECAREFUL DAMAGE! it must be make an back-lash problem.
and don't worry mate.
AF-S of K-3 Mark3 has never make any problem by back-lash because of double-checked AF procedure when AF-S is set. :p of course, AF-S of K-3Mark3 is verrrrrrrry fast, too!
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Forum: Pentax K-3 III
04-08-2021, 06:21 AM
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My K-3 Mark3 cannot be connected or invalid connected via tether or Wi-Fi. because, this is just prototype, not complete version.
and currently, Lightroom-plugin from RICOH Imaging web-site is not prepared for K-3 Mark3 yet.
but I'm sure K-3 Mark3 should be available that soon. just wait a time : )
and if that is connected, it will be verrrrrrry fast!
ps. Caution: tether plug-in for Lightroom and ImageTransmitter are different programs.
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Forum: Pentax K-3 III
04-08-2021, 06:09 AM
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I'm glad for your encouraged comment.
Yes. 100% exactly your comment is what i intended for Youtube video! :)
---------- Post added 04-08-21 at 06:29 AM ----------
OK, I answered! :p
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Forum: Pentax K-3 III
04-08-2021, 12:33 AM
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This is very sharp and good question. : D
good.
Now I'm sure Overseas(as a korean) Pentaxian is very clever. especially PentaxForums!
Now I'm answering.
(1) at KAF3,4
latency means AF point to point distance. if subject positioned between AF point and point, SAFOX cannot allocate focus point. so, PRIME V does exception handling which is better AF point. this is latency time.
(2) at KAF1,KAF2(for PZ) - I don't know how KAF2(for SDM) is operated, seems to not equal to KAF3,4. (because of KAF3 patent. I've related patent docs:patent No.10-1325588KR)
AF screw backlash is being a serious problem. I don't recommend these lenses for AF-C of K-3 Mark3. of course, has a problem (1),too.
longest distance will be over 50m. (at 450mm, DFA150-450 lens?)
I agree I think it does depend on selected lens, too. KeyPoint will be not distance, but angle of view.
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Forum: Pentax K-3 III
04-06-2021, 09:27 PM
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Hello mate, that is me. lol
let me introduce my self, I am currently PENTAX KOL at s.korea and working together with RICOH Imaging about K-3 Mark III Test.
Impressions | PENTAX K-3 Mark III | RICOH IMAGING
As stated in description of this video, This test means just eye-recognition speed by AE module.
Why be this video needed, as you know, safox13 works just detecting the distance by phase detection procedure. safox NEVER DO Subject Prediction. This test is strangely pure, but sure.
I'm poor at english so hard to speak long sentence. so please refer to the comments in YouTube for more details, except dishearten messages. : (
ps. more test(i.e.outdoor real person) is hard due to COVID-19. but I'll try as hard as I can for you, for All Pentaxians.
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