Sony lens Mystery ? ? ? (Focus moves without power)

Sony FE lens for E-mount has 18mm frangeback and Nikon-Z camera was designed to have the distance from the mount to image sensor 16mm = in the traditional sence, this 2mm gap can easily be overcome by the focus adjustment (infinity may come with a bit of rotation) by extend the focus 2mm more.   Yet, I do know the Sony lens was fixed to the minimum F-aperture and there is no manual focus ( = so-called focus by wire) when it was not connected to the Sony camera. = no point for attempt to use the lens anywhere else.

Though, as I made a lens mount adapter NEX (Sony E) to Nik-Z, I needed to find where the exact top point of the ring, before the Nik-Z mount ring and the bayonet part of the Sony lens cap was fixed.   Then I discovered very strange phenomenon of the Sony lens’ behavior.  

(The shape of internal shade appeared on the image = it never happen when the lens was used on the Sony body — in any distance, in any F-aperture = seemingly it is only to destruct the experiment.    The truth was that this lens SEL30M35  was for APS-C cropped size = not for the full frame = black frame shows the size of APS-C image and the image on the A7R finder was in fact digitally enlarged 50mm equivalent image. )

At first sight, the lens seems to be frozen at the closest focus position  —– In that case, I should click the camera (Nik-Z) to close-up test, then utterly unexpectedly, the focus of the lens jumped to infinity !   I couldn’t believe my eyes.  On the repeated test, the lens behaved like this again.  

(Note, only the Sony Macro 30mm showed this strange phenomenon, not with other lenses such as 12~24mm Zoom or Zeiss 55mm F1.8)

Since the lens was not mounted to the Sony body, its mean no connection to the power supply, how the focus motor can move ? ? ? —– (Is Sony lens got internal power back-up inside of the lens barrel, such as a super capacitor ?) —– The most peculiar things was, how the lens did know if the lens was mounted on the camera (even though it was not on Sony camera) and aimed at a close subject or not ? ? ?    In other words, when the Nik-Z and the Lens was left alone or lens alone, it doesn’t move at all, as if the lens got its own self-awareness !   Otherwise, who is activating this phenomenon ? (Further test found that the lens alone ( without being mounted to any camera (Sony or Nikon which ever)) moves = both F-Aperture and Focus moves = the lens got internal power back-up —– When the lens was aimed to dark object = Focus moves to far,  and if it was aimed to bright subject (such as the Sky) the focus moves to the closest.)   (Microchip may operate with little power though, the motor driving the lens for AF needs a certain amount of power = even a super capacitor can not operate long.)   The another question is, is it only to annoy the people ? ( —– to whom ? —– How many people in the world would experiment like this, other than me ! ? ) otherwise what is it for ?  = It’s nothing but a mystery is it  ! ? ? ?

Sony’s camera division was created by the former Minolta people who developed the world first Auto Focus SLR, Alpha 7000.  Once I was invited to visit Minolta’s Osaka HQ as a camera critics and met Mr.Kobori who lead the creation of A7000 system.   However, why Minolta couldn’t keep the position of top runner was, that they gone too far on the system design. = Try to fulfill all the possibility of the photography, then trespassed the secret of the individual creativity.   So that, despised by the top photographer (Even if they do use the same technique, they don’t want it given by the camera.)  —– while looking back, I’m not sure whether the bad habit or paranoia of the Minolta people still hanging around Sony’s floor ? ? ?   😀   (Isn’t this a paranormal, or horror story ?    This is a camera equivalent of a severed head speaks ! — If not a poltergeist )   😀

 

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To see if it was a joke or accident, I tested them again.

The Sony 30mm Macro was mounted on Nikon-Z via homemade NEX to Nik-Z adapter, when the Nikon-Z was switched on, the image appeared then with a bit of noise the black frame appeared (photo left) as the lens focus seemed to be close up, I aimed the camera out of window (photo right)

And, I put an object for close up —– then spontaneously the focus was moved to infinity, seemingly to destruct the close up image !  (Strange ! — Image sensor is Nikon-Z side which was not connected to the Sony lens —– How the lens did know it was a close-up image ? ? ?)    (I wonder, if the devices started to communicate each other with a common code by NFC, Near Field Communication kind = rather futuristic horror story isn’t it  ?) 

All those were happened while the lens 30mm Macro was on the NEX to Nik-Z adapter, its mean, the lens was having no power supply or feed back from the camera body.

(Yet still, as I said few lines before, if the devices started to communicate, and using RFID like system, lens may able to receive the Info’ even a power from the camera body ! —– and near future, the camera may starts to beep beep you “The girl sitting over there is a well-known model, would you like to take her picture ? ” )   😀

Still, the question is the same = What makes the lens focus move without power without intelligence of the image.    What was that for ?    (I need to ask SONY —– I gave an inquiry of which the Case number was  18 ****8 —– Who answer me ? ? ? —– In fact, I wonder how many technician in Sony ever got knowledge of this  ?)

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After I discovered that the lens keeps moving whether it was mounted on the Nikon (using homemade NEX to NikZ adaptor) or left alone.   So, they were the photographic evidences of Sony (or Minolta) zombie state.

When the lens detects the light, its focus moved to closest (photo left)  When the lens detect no light (ie; dark) focus was fixed to far — Then suddenly take the lens cap off and aimed to the outside, the focus move back to closest = So, this picture was just before the focus moves (photo right)   (I have no idea what sort of the game Sony heated up ? ? ?  —– But, the game against to whom ? —– It seems all those strange activities were to make this APS-C lens work on a full-frame A7R body = automatically adjust the 30mm image zoom-up to 50mm equivalent image. )   😀

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Most beautiful Face 2018

The magazine, TC Candler announced the 100 Most Beautiful Faces of 2018 which selected Thylane Blondeau as the top beauty.

And this is yet again Ai Shinozaki = she was listed in there 84th, the bottom of  4 other Japanese. 

(Something distinctive of the Japanese standard of “Beauty” or “Pretty” often reject the big-mouthed face like the western “Gorgeous” face. —– simply Japanese hate talkative = noisy person to be in their close proximity. = We wouldn’t deny their existence though, don’t come close to me = leave me alone, don’t disturb my peace.  In reality, there are lots of talkative active women presenter in the TV = no problem we can just switch off the TV) 

What peculiar the choice of Ai Shinozaki is —– she is not a typical Japanese beauty, far from it, she is rather indistinguishable = you may miss her in the cloud.   But that is the strongest point why she was chosen to be the top of most untold lover of Japanese men.   Thousands, millions of men are the Otaku, loving their 2D character (= the character in the printed comics) hate 3D real existence of women = hence stay alone, never get involved into the relation. 

For most of the western man’s concept, such mind-set couldn’t be understood = without the physical meanings, it would be no use to think about the relation.  But it seems, the love can be a purely an imaginal existence in some cases. 

Many years ago, when I went back Japan to see my mother, she told me that the mother of woman-A came to tell that A will going to get marry.     ? ? ? — A was one of my secondary school classmate.    Why her marriage was anything to do with me ?   To be other than a classmate, nothing else has been happened between us.   We’ve never been a close friend let alone any relationship.    Yet still, in her mind, one-day when I come back from England, then court her hand.  —– can anybody hold this belief for 25 years in a totally isolated mind = no attempt to make any communication, never came to see my mother asking my address and attempt to write a letter.  But just waited as an innocent maiden.  I’m not telling you a horror story, neither bragging or boast funny story.   It was just a simple fact happened many years ago.   So, I’m wondering that in her 70s, how woman-A is thinking her life?  And myself, if it was happened what kind of the life we could have together. But, the Karma kept me woman free and made me live as such.  This is what Karma mean, it is beyond of anybody’s choice.  We can not bend it. 

Like all other instinctive reactions, the love was created in the old cortex of the brain, Amygdala.   When certain visual signal (or other significant signal) hit the Amygdala   ! ! !   Oh, I love it (or him or her) = Love at the first sight.   And it was the instant seclusion of the Love hormone, serotonin, dopamine etc —– with those chemical effects filling all corner of the body = the body was immersed with love.  Finger was filled with tingling sensation, other parts was filled with hot blood etc etc.  Such reaction has the same pattern like when we saw a deadly snake, then our body would be filled with adrenaline and get hi-tension. —–

Funny things about the visual pattern which hit hard the Amygdala.  It seems that the pattern was pre-loaded, but it is hard to trace the origin.   (could be even DNA originated subconscious.) —–  Try to find such pattern,  I collected 50,000 photos of faces and sorting them —– I found the pattern which attract me though, I couldn’t find any relation among them, let alone its origin.   Even funnier was, such pattern creates the soft spot in the mind = it seems this soft spot is the all source of the trouble.   Such soft spot blinded our eyes and override the rational thinking.   (Simply, we often turn the blind eyes to the cause of trouble = then it will come back hard)   Life is hard = So, why not to have a dream on 2D beauty —– they wouldn’t betray you.   😀

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Net Shopping

How convenient they are.  I absolutely agree.  Without Ebay and the Chinese supplier of the small components, my kind of DIY couldn’t exist.  Though it has an inevitable drawback of remote shopping.  I’m buying the things only from its description and the photos, without actually checking the product, and paying the money in advance.   As a matter of fact, I’m doing this while fully aware of me lose the money.   That was why I don’t do the shopping of more than £15 (with very few exception).   That may be a cost of having a laugh, Ha ha ha.  —– On the history, in the early days, 10, 15 years ago, I failed all the shopping which was more than £50 each = two from US and the other from Australia when I wanted to get Hi-power LED.   Just the money has gone and I never seen any LED.   No reply to my Email, or any Phone call.  That’s it.  The end.  What I got was the expensive lesson.   😀

Recently, I bought several items on the Net.   MNh 2500mAh DURACELL Batteries from Green something of UK dealer. Because I trusted the DURACELL , I bought two packs of them.   They were fantastic on the start.   I used them for a kind of LED lighting = Their power continued more than double of the previous set (seemed 1500mAh )    Then, after the second, third charge, they lost the capacity, down to the half.   In fact their price was cheaper among the others.   But, obviously there was a catch behind.  

There are two different approaches to the sales tactics, “Less profit but selling quick and more”  or  “With higher price, selling less but more profit with less handling and posting” —– yet another approach was, find the cheap deal for threw away goods, such as the rejected product from the factory bin.  (Well known example was the half price memory card —– you can understand where those memory can come from if you realize that only few company in the world can produce such Hi-Tec memory = cheap one was the rejected because of so many dead address = to skip the dead address slow down the process which you may not noticed)  Anyway only few customers return the goods or claim the refund. = They expect that they can get away with the money in the pocket.  (And they do.)

The another item was two sets of Lens / Body cap for Sony E-mount —– though I got 1 Sony, 1 EOS = then, who bother to send them back and get replacement for £3 product ? = Ha ha ha.  

I had talked about the Piercing saw = as I wrote, they were good shopping yet, the saw blade came with (supposedly 6 different sizes)  were, in fact all same size.    Ha ha ha   again.

In the another shopping = against the ordered item 58mm to 58mm mount, 36mm to 90mm extension helicoid ring, what I received was 25mm to 50mm extension ring —– still they want to have my 5 star response.  (they may not aware that they made a mistake)     We can’t to be too serious with Net.   Because of they are loose and not square, we can have a fun.   Likewise, even with President Tramp, still, life goes on.   Ha ha ha   😀 

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Most useful Tool

It’s a kind of metal saw.  Much smaller version of Hack Saw.  Some times using same saw-blade with a Junior-Hack Saw which was called Fret Saw, though when its came to this size (of blade) it called Piersing Saw.  And they are mainly used by the fine metal work = Jewelry making. (The advantage of this saw against the other Bow saw or Fret Saw is, its bow can change the size = broken blade can be used as a half-length blade, and smaller size can do much finer cut.  On top of that, the universal clump can be used with any kind / length (Max 16 cm — if it was too long = just brake it to a half) of blade.)

I knew this tool rather long time though, since I acquainted with a jeweler friend, I’ve been thinking to visit where he has been working (and do a shopping where he is buying his tool) = Hatton Garden area in London where is the center of the diamond and the jewelry trade.  —– though, visiting somebody kind of plan always get delay —– often ages.   First, give a call to find the suitable timing, before that I need to find the exact address etc etc = I’ll do one-day, one-day.

When I did rather miserable work with improvised Spiral Saw Blade to cut a lens cap, my patience has run-out.   Don’t dream a happy visit.  Just get on the job = get the Tool I need. —– So, I got it from the Net. (As I paid cheapest price, the saw blade came with 1/0 ~ 6/0 size were in fact all in the same size — still usable.)   😀

And, they did a work in the amazing efficiency as I expected.  (£15 was a worth to spend)   😀

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Leiz Elmarit P Lens on Nikon Z7

While checking a corner of the shelf, I found a Leiz Elmarit projection lens I got from odds and ends box of a camera shop years ago —– in fact it was the same time when I found the Zeiss Taron lens in the same box for £1 each.  To make Taron lens for ordinary camera use I did quite a lot of work —– and to make a helicoid for this Leiz lens, even more work was anticipated.   Then, when I got a 58mm reverse adapter ring for  Nikon Z, I got other idea to modify this Leiz lens easily.

Since its rivers adapter got 58mm screw, I found it could be used to mount a helicoid extension ring  M58 to M58 mount, 24mm ~ 55mm extension, together with some joint rings to connect to Leiz lens.

Nik Z-58mm, Helicoid ring, 58mm-52mm, K4 and K5 from old Nikon K-ring (having 52mm screw), 52mm-49mm, then put the Elmarit P lens on it. = no cutting or glue work, just put together.  So, here is the Leiz Elmarit P 50mm F2.8 for shooting on Nikon Z7 use.  (Note, helicoid ring was mounted riverse direction and the infinity focus was made while helicoid was slightly rotated position.)

Projection lens may be designed for close range use = may not have the best result on far subject.  And the test picture showed rather funny off-focus bokeh on the fore-ground.

Still not too bad result for closest distance (23cm) and its out of focus bokeh was very smooth and soft here —– any way, Leiz Elmarit lens 50 mm F2.8  costed £1 + some odd rings. 

I like a subtlety created by the clean image as well.  Leiz is good in cool image. Unlike Sony, Nikon Z doesn’t exaggerates the tone.

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In Comparison — (D850/Z7/A7R)

Strangely it may sound though all those photos were taken on the same settings = AV, ISO 100, Shadow and -2 comp.  But the lens of top photo was Nikon mount Zeiss 18 mm F3,5 (at 5.6) on D850 and the photos below, the Left were Pentax 110 Auto 24 mm F2.8, the Right were So-called Omunifocus Fun lens about 28 mm F13.  The timings were as marked.  (despite the same Shadow setting, why the sky on this picture was not so orange was = that they changed the color so quick.)

And those photos were by a Nikon Z7 camera.  Left was Pentax 110 lens, Right was Fun lens.  See within 2 minutes, how quickly the sky changes.   By the way, camera was not stationed on a tripod but hand-held —— while changing the camera and the lenses, time fly.  (In comparison, Z7 can give clearer and clean image than A7R)

Those photos were by the Sony A7R camera.  Again Left was Pentax 110 lens, Right was Fun lens.  Note, in here right photo was the earliest photo among all those photos.  (seemingly, A7R gave the most orange shifted color) 

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Been watched ? ? ?

(This is the back screen of my D850 camera)

When I lived in the north London, on one of the hilltop.  From its window, I could see the horizon (in fact it was the hills of North downs / Rochester and Dover direction) and a New Year’s sunrise.   But now, here from a corner of south London I could only see the sunrise over the roofs.   Warse still, this year, I could only see the sun behind the cloud.  —– So, the first picture of the year was the cloudy sky.  Then I noticed that its number of the photo in the camera was 777/777.  Other than that fatal number of 8150, I’m not fussy the number like 666 or lucky 7 still, to see so many sevens, its reminds me the zincs of the Gurdian God is watching.   It might be a message of an encouragement for the New Year / This Year = since I still need to push the  2 complaints against the Council.    This sign looks very good ! 

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Fortnum & Mason’s Window 2018 taken by 3 kind of Lens

Three kind of lenses were used for those photos.  Looks normal straight lens was Ultra Wide Angle Lens (Sony 12~24mm F4 Zoom).  And if the image has dark surroundings it was by the Pentax 110 auto 24 mm F2.8 Lens.   If the image got heavy anastigmat aberration, it was by a homemade So-called Helicoid-B lens.

Some of you may not like though, never mind it wouldn’t kill you.

And I wish you a Happy New Year. 

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Simple Fact = the Truth

It is a simple fact, in our daily life, unless we intentionally think “I am”, we are living without a conscious of self. —– Do you walk while thinking “I am walking” ? Or, are you reading this script here while aware of “My eyes are following this, letter by letter and my brain is taking and understanding its meanings in” —– I don’t think so. You are just walking without knowing who is walking or who makes you to walk. So does, you have been reading this without knowing who IS reading. In deed, You or Your-SELF haven’t been existing as a conscious. That’s because such as SELF is nothing other than a product of the thinking, in other words, it was an intentionally created imaginal figure which is to assert or to demonstrate the ownership of “this person”. In fact it IS a part of one’s desire, Ego and the Greed. So that, such as the SELF, let alone Perpetual self could not exists as a reality. It’s mean, such as a reincarnation could never possible to occur simply because the subject, the SELF, whom to be reincarnated is not existing. How could it be ?

It IS so simple as a straight fact yet still because of it, it is very difficult to explain why. Quite a lot of Buddhists tried to explain though all of them only made a simple truth more complicated. Because of the authoritative attitude of those monks, who want to make their word looks great, they made up unnecessarily heavy theory such as Void or so on. The truth to be with Dharma is not necessarily heavy matter such as even a seed of dandelion can fly away.

Lord Buddha’s teachings were not complicated or theoretical, in order to any followers can grasp the truth by themselves. (not by understanding the complicated words or teachings but through their own observation on the practice = not believe the words but get it by yourself) —– Such as the earliest teachings of 4 noble truth, they were not a kind of complicated deep theory but the clear fact or simple human reality. That’s reality IS the very truth. Like we are here IS the Dharma.

So, when Lord Buddha pointed out the Point, it went straight into the mind of the followers almost like a lightening, the followers could get the truth at once. ( it made a legend and the tradition of the instant enlightenment.)

So, even now those monks still keep talking complicated words and the fantasy of heavens. —– can’t those people open their eyes to see such simple reality and the truth ?

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Analog — Digital

Why such picture was heading the post “Analog — Digital”?    I guess most of the reader here has no idea what I meant, how this picture signify the Analog approach to stabilise the camera.  (To stop the vibration, instead to remove the cause, just forcibly gagging up, is quite an analog !)    The picture was a camera fitted with a modified chest-pod. (Because this mirrorless camera’s shutter shock was too much for their light-weight and small body, I needed to use such device to block the camera movement especially when I use almost weightless small Pentax 110 lens. —– that was the reason why Sony put the image stabilizer in the body for their new model.)

Till only a decade ago, there was many camera support / holder / bracket/ balancer to mount a cine camera which can eliminate / reduce the camera-shake.  All of them were using a clever design made with the counter balance / spring to stabilizing the camera when the cameraman was on the move.  So, when the camera was up and down, the counter balance or spring has to compensate the movement exactly the opposite direction = the camera’s weight / center of the gravity etc has to be carefully adjusted to the individual camera and its configuration. (when the lens was changed, the adjustment has to be done again from the start.)    But, when, the Gimbal came and took its position, it changed the whole story over night. 

The people are believing that the Gimbal was made with the Digital technology but they were not.  Gimbal was built while using the high-speed analog servo system.

Unlike popular misconception, digital system is slower than the analog system.  Any electronical system need to have the time to make it response.  Therefore, when the process has many stage, even the stage of just amplifying the signal, it takes certain time, which mean a delay.  And to drive high-power device, it need to drive them by higher current, and to do such drive, there needs to have several stage to increase the current though, with the development of high current semiconductor such as D-Mos, IGBT, etc, direct drive became possible without time delay.   Its mean, when the movement of the camera was detected downward, in the same moment, motor can move the camera upward.  Together with the development of such as a core less motor which can move instantly, the Gimbal was materialized.  And the same idea of  feedback control, the image stabilizer became very popular.

You might heard of the word “Digitizing depth of 12 bit or 16 bit” kind.  People might be thinking, 16 bit has 4 more bit data on top of 12 bit — was utterly wrong.  Say assuming the maximum output voltage from the image sensor was 1 volt. Then to measure 0.9999 Volt or 0.99991 volt in the detail of 1/16384 volt is by the 14 bit, 1/65535 volt is by the 16 bit depth. = The difference is how smaller its measurement would be divided. (imagine, the difference using inch or metric measure.)   In an A-D conversion, to measure in 16 bit, the reference voltage has to be increased 1/65535 volt each time and compared to the output voltage = count up to 65535 mean max 1 volt.  And to do this with its “Clock frequency” is all about digitizing process.  (Counting this to each three BGR (but actuary BGGR four) on 47 Mp is all about the imaging process.)   Yes in deed, it’s a lot of work !

So, in reality, Digital process is just a way to handle the electronic phenomena with counting measure — that’s all. (Save the additional implication / benefit etc)  Somewhat, the Stone-aged man handling the life, say I killed 200 kg deer with 2 kg axe, instead of saying I killed a big deer with my heavy axe.  —– how civilized our digitized mind is !  (The irony is, even if we could accurately measure, we still brandish an axe and kill = work is still the same. —– and even if the color was digitized into millions of individual color, our eyes can distinguish only 1000 colors = that was how jpg operates.)

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