Yoshizen's Blog

Early Magnolia 2020

In this post, the photos were taken by a homemade lens Godo Lens, except no.4.
Those photos were taken by Tamron SP 90mm Macro on Nikon Z7.

I featured this flower twice (?) before using another fuzzy lenses. But, it seems the people takes the flower branch home there is no branch left on the lower part of the tree, and made me very difficult to take picture. (So, I needed to resort with something special measure. 😀 )

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Walk with Godo lens

Among my homemade lens, being as if it was almost ordinary lens, Godo lens is the most remarkable lens. There was no eccentric feature like 1/2, 1/4 lens kind but two ordinary unknown origins lens put together. (yet, one of them came from my friend Gordon = hence Godo lens ) And the lens happened to produce quite normal image (if not a lots of halation) together with quite nice softness. On top of that, thanks to a Chinese helicoid ring, good convenience of close up use.

I went back to the so-called Perpetual Cherry Tree and found that the area was in a construction site. (Tree was still there and seems flowering though)

I’m not sure whether they are bamboo or reed ?
I like a natural looks quality of this macro. (Too sharp image of most of macro makes the flower looks like an animal body parts) – – – Unless the one was a forensic scientist, we may not like to see too sharp detailed flower parts.

For the cost almost nothing homemade lens, I would say, this is the good lens.

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Heaviest Gadget for 6×7

This is a homemade bellows for Pentax 6X7 camera, I made it 45 years ago. — ( I was working for botanical photography at the Uni’s Makino Herbarium then. Though, I was using more of 35mm Nikon camera – – – – since, Makino’s archive was 35mm Kodachrome and 6×7 camera was mostly for other journalistic subjects.)

This bellows’ solid structure does well stand against the heavy shutter, mirror shock though, the whole unit (with camera body) was too heavy to carry around = it never went out field. (For field work, I was using 135mm F4 Pentax 6×7 macro lens.)

So now, it is more like a technical sample or, industrial remain. 😀

( And in reality, this device didn’t under take the work much = theoretically it should be useful though, in practice, there isn’t much needs of tilt and shift, and in most of the case, the depth of the field of macro lens when it was stopped down, could cover the needs.)

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Simple Arithmetic

In the previous post, I mentioned the strength of the image and the size of the lens. When the inside-lens was 6mm and the outside was 14mm, of course the image made by the outside-lens would overwhelm the image of the inside-lens. The image made by the inside-lens will almost disappear like a halo caused by the dust.

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We can calculate the area size of the lens = 3.14 x R x R – – – but we can see just the relative size as 6×6 against 14×14. In the 14×14=196, 6×6 was the inside-lens – – – 196 – 36 = 160 – – – 160 is obviously too much – – – it got to be about 72 (36+36) and the root of 72 = about 8.5mm – – – it’s mean, if the outside-lens was 8.5mm, the area of its ring shaped lens was the same to 6×6 inside-lens —– The image strength should be the same ! (The Bokeh image made by the inside-lens should be as strong as to the outside-lens’s sharper image.)

While restricting the 14mm to 8.5mm size, effect of the outside-lens was reduced = the inside-lens bokeh became more prominent.
This was not just fuzzy lens but rather sharp (kind of) lens and Bokeh lens conbined = therefore it has certain sharp (?) details.

How awkward = like a useless game of Sisyphus. – – – In fact, that was what all about the game I’ve been plying here = making the lenses.

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And that was what Lord Buddha told to his disciple, for sweeping the garden to Shuri Pantak, knocking the door to Kisa Gotami. – – – – – Why not to me make the lenses. – – – Why not ?

I like the tone (color shift) of this picture. The watercolor paint which the brush was not well washed = its color has been fused or casted. 😀

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Those images were made on the Nikon Z7 – – – I think, the softness was just right. (Soft mean, the neibouring pxel’s data were spilled out and infused each other hence the edge of the small details disappeared and the color mixed – – – how wide this infusion occur is the depth of the softness. Or the spread of the light. = Bokeh ! )

When the subject was good, any camera can make nice picture. 😀

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Pla (B) Lens

Pla Lens (A) was somewhat a kind of flop in my try. —– Then, Zen wouldn’t give up. 😀 Why not to try with a different lens. Anyway, the luck is in a chance encounter (with a suitable character lens)

A lens I found was a single meniscus glass lens which can make the image like this photo —– of course, this lens could be mounted in the centre of much lager lens though, such large lens tend to have rather longer focal length etc etc. So, I decided to make a hole in the centre of this lens and put other one-time use camera lens in that hole. It took only 5 min’ when I made a hole in that plastic magnifier lens, but this time I had to drill a hole into a hard glass lens. If I push too hard, the glass will chip or worse clack altogether. = slow slowly work took half day.

The one-time use camera lens was pretty small. (I used only front lens ) Which makes the image like this. ( = unlike you expected, the centre lens produce the bokeh, and peripheral lens would creates detailed image. )

So, the concentric double lens was mounted on the camera = AND suprisingly, the image came out was rather normal. = the image was just fuzzy mediocre lens kind. (The size of centre lens was 6mm, Outer lens was 14mm which has 4.4 times larger area = in exposure level, the effect of 6mm lens was too small = negligible) (Yet still, the fuzziness wasn’t too bad even though it was far less than what I expected)

I need to get better subject —– image was somewhat similar to the Godo lens.

The fuzzy lens suite for the flower photo. Nobody complain. 😀

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Pla Lens

Sorry to be too casual — Pla was a shorten of Plastic magnifier. I don’t remember how and when I got it. As I was looking for a lens which is large enough to accommodate a lens of one-time use camera kind, I just found it on a corner of my desk.

Pla on NZ7

Yet another fuzzy photo was a result of the newly created homemade lens, out of plastic magnifier and a one-time use camera. —– I have tested 1/2 lens, 1/4 lens kind though, they were the lens combined the out side of each other. = So, how about to try “Concentric two lenses” !

Godo on NZ7

(Incidentally, this photo was taken by a bit more ordinary (?) lens = Godo Lens.) —– You might say, when one lens can produce the image like this, why do we need yet another lens ?

The situation was more complicated = TO accommodate the other lens in concentric mean, I need to put another lens in the centre of a lens = It’s need to curve a hole in the centre. —– So, I improvised some tools to make a mini bench drill.

I just carried out the work = 10mm hole was drilled on the centre of Pla lens and a one-time use camera lens was inserted into the hole. Then the lens all together was mounted to the camera. It was mounted to the depth where one-time lens can make the focus = but too short to the Pla lens = hence, the resulting image was like the photo right.

(Ring shaped Bokeh was made by the Pla lens’s so-called “Ring Bokeh” caused by too out of focus lens. — it’s mean, even the “Bokeh lens” has to have about near focal length = out of focus may makes nice bokeh, but “too” out of focus may be too bad. 😀 )

So, this image was the worst among my homemade lenses ! 😀

A night sky —– anyway, we may not need much of details.

So, how about this ?

M m m m. —– It may need some improvement (I need to find the lens which can make softer Bokeh ! ) still, I like their paintary effects.

I can’t resist loving the image like this.

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Godo Lens

The reason, why the sky was dull = not because the Godo lens but the sky was dull.

My friend / Cinematographer Gordon was clearing up his etc — and gave those junk to me. I don’t know how the man neither geek or otaku, managed to disassemble those, even without having tools — I didn’t ask.

What so ever the history or origin, the lens is a lens = only a matter for me IS whether it is “Usable”. —– Another day, a man offered me a very expensive industrial projection lens = more than 20cm diameter and 5kg heavy solid glass. I can guess, when it was made and sold, it must have 10 thousands pound price though —– ? what can I do with this ? —– once before, the line or graphics of the big industrial design was transeferred onto the iron material by optical projection, but now the digital technology and the laser took the work role. So, some of those old staffs may not stand even for a door stopper now.

If it was a converging lens, placing the lens on front of the camera (I mean, SLR body without a lens) and see the image. === in most of the case, the lens would show the good image only in the centre = in certain taste, the fuzzy surroundings may give a soft good atmosphere though may not necessary always.

Then give more test while stuck the lens on front of the focusing helicoid etc and try combine with other lens and so on etc for all sorts = and hundred of test click.

Since I got number of fuzzy lenses already, this time I picked one lens which has rather even image field (photo above) but as the angle of view was rather narrow, I added a diversing lens to widen its image field. ( You might be amazed to see, that the lens game can be played in such a casual manner — Yes, the game was not reserved only for Newton or Gauss kind of people)

Resulting lens was somewhat like this. = a bit strange lens. Never has any defined focus, nowhere is sharp nor anywhere is very blur.

So, makes your day always somewhat dull. 😀

This softness is more like a stocking over the lens. = the image looks like a reduced resolution image / Toy CCTV, otherwise the picture looks normal picture.

When the light doesn’t go where supporsed be, we call it aberration. But, in this case, not enough number of the light reaching and occupied each point, as a resolution. If this was the case, where the missing light has gone ? Is this an insoluble paradox isn’t it ? ? ? 😀

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LED ring light + 8150 Story

While looking around the Ebay, I noticed that the Chinese LED Ring Light is very cheap now = could be even cheaper than a homemade.

So, I bought one 24W-Variable, 5500K, 20cm Ring Light for £12 ! —– it came with a mounting fixture still not perfect for a photographic lighting. —– for photo-light, it needs to be mounted on the many kind of lighting stand etc, in order to have a freedom of the positioning and lighting angle. = A sort of good compromise was a Z-light arm on a flexible lighting stand, which may allow the position poised setting under one hand adjustment.

With this idea, I have collected quite few Z-light components etc, etc — then I realised that, to build a Z-arm, balancing springs are the most troublesome components I need to get hold (but who supply them etc )

And, I was convinced that instead of struggling building Z-light myself, why not to buy a readymade LED light with Z-arm = when such light comes as cheap as £18 !

So, I ordered and waited the item delivered. Then, I received a delivery notice of Tracking Code GV085180518GB, which said that the parcel was dropped off : 28-Dec 14:04 GMT. —– But, very parcel was seen nowhere.

—– As I knew the tracking number was completely that omen of 8150, I thought it could show the big trouble. (The parcel was not dropped to the neighbour either and no notice was left) So, where has it gone ? Was that one stolen ?

So the enquiry to the Royal Mail — etc etc. — ? ? ?

Then it was delivered on Monday by a Chinese Post woman.

Now the system of main light and the Aux / Ring light on Z-light arm were complete.

On this 8150 case turned out to be not necessary so bad for the New Year 2020. But the question was, ——— Why the Omen Number 8150 which can be read for Ha-I-Go-Rei in Japanese (mean the Spirit Behind = Guardian Angel, keep following me ?) Leave me alone. (Or, the heaven is giving me the sign = that I have to fulfill my role ?)

Then the twist came 4 weeks later = The LED ring light on Z-light arm which I bought for £18 from China brake down. (Can be modified or cannibalised to use only its LED ring-light and the Z-light arm) Seemingly, as it was chiep, the quality was just accordingly. —– Same as the Korean, Chinese might have thought that if they copy Japanese product using the same production machine and the component fron Japan, they can make the same though —– they don’t know the “Now-how” = how to use that machine. = Quality and the reliability couldn’t be copied. (That’s why I only buy small mechanical components, such as adapter ring from China)

And the heaven might know this situation long before, and that’s why the tracking number (085180518) appear to be that’s “8150” omen number = so, the product has come with a warning.

Then, the following story was funnyier. I try to get hold the said broken switching unit (asking the seller to replace the parts and try to contact the manufucturer of the switching unit —– without success ) Then, I realised that apparently the same ring light (with the same switching unit but without the magnifier lens nor Z-light arm ) was on the market for as cheap as £6.70, which could be even cheaper than the cost to get hold the electronic circuit from the manufacturer. = So, I ordered the two of them. (One to replace the broken switching unit and the other to use on my homemade ring light) = Now, my LED ring light on the Z-light arm is in a working order.

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Strange Fragmented London

Those photos were taken in the same time of other “Fragmented Lens Photos” though, something wrong with Colour balance setting. —– Still, I like them.

Is it possible to take photo without an intention of taking photos ?

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Fragmented lens for London snap (A)

Somewhat the same landscape by the “Fragmented Lens” on Nikon Z7.

It is something puzzling me ? ? ? —– Advanced image processer in the latest camera straggling with unusual images and make the image even more unnatural.

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