Yoshizen's Blog

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.


Hi-ISO noise

Fragmented lens on Nikon Z7 / ISO 25600 / ND filter = in order to make the exposure time even longer, a dark ND filter was used as well.

Till now, I thought that the noise caused by Hi-ISO setting was just a nuisance, or necessary evil though, I became aware, in certain case, it could be an useful tool.

(ISO represent the degree of amplification of the signal —– any electronic signal would produce the noise when it was intensively amplified = whether it was audio signal, or light signal from the image sensor, when they were amplified, the residual charge in the circuit line etc etc were also amplified hence those noise was superimposed onto the main signal. — you may say why the digital signal has noise = the output signal of image sensor IS analog, until they were AD converted. = Here, in the AD converter, the depth of 12 or 14 bit etc decide the quality of the image. = one bit more mean twice as much process will be needed for each pixel of the image sensor ! = You see how enormous the task is = That’s why almost all digital camera is Japanese (inside of Leica is Panasonic) and almost all image sensor is Sony —– Who else would bother to take such awkward task in the world. 😀 )

Fragmented lens / ISO 25600 / ND filter
Fragmented lens / ISO 25600 / ND filter
Fragmented lens / ISO 25600 / ND filter
Fragmented lens / ISO 25600 / ND filter
W 1/2-B lens / ISO 25600 / ND filter
For a comparison, this photo was taken under the same condition but with the Sony A7R / Fragmented lens / ISO 25600 / ND filter (noise level seemed to be a bit less than the Nikon Z7 —– was that what the advantage to be an electronic company over a lens company ? )

Even among the oil paint, many different styles = so, in the soft paintery effect photography, there could be a grainy style —– looks not too bad.


Fragmented Lens

Note: The photo here was just fuzzy (unsharp) = no overlapping bokeh = since it was made by a single lens

After making 1/2, 1/4 lens cameras, there are many fragmented lenses left behind. Even fragmented — its still functions as an optical lens.

Zennist’s tendency is = No attachment, — yet still, (strangely) go for whole hog. So, why not test those small plastic fragment ?

As (or used to be) an optical lens of one time use camera, it works as a lens, even though it was fragmented to such small fraction.

And a remarkable point of those fun camera lens IS they are very well designed aspherical omuni-focus lens. Therefore, they can capture the image in distence to

close subject such as this without any focusing control. (well, you may say, more or less)

So, for the general use, they do an enough work. What do you ask more (for its less than £10 price). 😀


1/4 lens !

After two attempt of two 1/2 double lens, it would go to even 1/4, naturally. (Anyway, it was only a matter of hacksaw and a glue work. And it was what an Otaku lives for. 😀 )

Photo left = Covering the lens with black tape and see the effect = even from a small part of the lens, good enough image would be created. Photo right = so, only 1/4 of the lens to produce the main image and 3/4 lens for the out of focus bokeh.

The plastic lens was mounted to the Sony A7R camera (yet the lens can be attached to the Nikon Z as well.)

So, this homemade lens will produce the image even worse than those W-lens A or B ! 😀 —– can you guess how happy I am. Ha Ha Ha 😀

So, they are the regular test shot. (This dry rose has been working for me the past 5 years !)

In case, if anyone wanted to see more natural image for a comparison, those are the images from the ordinary (?) 110 Pentax 24mm lens on the Nikon Z.


Ensign Viewfinder Camera ?

This photo was taken through the viewfinder of the 1940s Ensign camera.

Ensign camera was produced by the English Houghtons Ltd. And this streamlined Ful-Vue was made around 1946, using 120 film for 6×6 format.

I got this camera from the London Camera Exchange’s odds and ends box however as it came together with other shopping, I don’t know how much the price of this one though —– as it was non working dirty junk, price could not be more than few pound. SO, I spent next few days to clean and repair. (now the camera was cleaned and in good working condition !)

Camera itself was designed in the streamlined style and having large “aerial image viewfinder” (so that, it was named “Ful-Vue”) —– While checking this aerial image, I realised that I can take picture through this viewfinder. = = = So, I fixed a thin Nikon Z mount adaptor on Ensign’s viewfinder.

Unlike aerial image itself, the image through viewfinder lens could give only 1 feet (30 cm) focus. —– still, for close-up photo, its soft image was pretty interesting.

Though the viewfinder lens doesn’t have any great quality. Its got quite a heavy chromatic aberration. (still, for a fuzzy photo fan, those red and blue fringes were the mere accompanying decoration)

A difficulty of shooting with this camera was, to shoot a front subject while looking down, while following the subject which moves opposite direction. (because, they are the mirror image —– yet, strangely, while viewfinder’s aerial image is not reversed, why the photograph through the same lens got to be reversed or upside down ? ? ? 😀

May be I should have proper shooting test of this camera through its main lens, which is about 95 mm focal length with 12 mm diameter (its mean, the lens is about F8) —– but, no F-aperture, or Focus control ! = even worse, I don’t know how fast is its “Instant” shutter speed. (Shutter has Instant and Time ( = B) setting though, there is no tripod screw — How to use this B setting ? ? ? = 1940s people must have very solid steady hand) 😀


Aster aster

In anywhere, the Aster seems to be a flower of the Autumn. There said to be many variety of Aster though (one of them said to reach 2 m tall) to my eyes all the Aster looks identical.

And Aster is one of the most humble flower, almost come down to a weed. = almost, yet she was not common enough to be a weed.

Photo left was taken by W lens-B and right was by 110 Pentax 24 mm lens on Nikon Z7.

So, the same question, why I see the same flower on the same spot every year —– why I don’t see a bit different variety ?

In Japan, this flower was always seen to be a synonym of the pure innocent girl. (now, it must be a rare, or even endangered species = so, the flower receiving even more isolated romantic dream — of a boy)


W Lens-B

Thanks to the advancement of the technology and the use of the image recognition system etc, alongside the advancement of the optical design x optical plastic = we may find many usable aspherical lens in many devices.

So, I got a plastic lens and I made yet another W lens for my camera. —– using the same idea of 2 cutted half lenses put together.

The effect was more or less the same to W Lens-A but the bokeh is a bit more prominent.

Basically those lenses were designed for omnifocus, yet still a close-up extension ring works well. (omnifocus works only within a limit) 😀

Whether you like them or not I don’t care. I’m quite happy with them because, I feel that the image is much closer to what I’m living with. 😀


W 1/2 lens

Here, [W] didn’t mean 2 indivisual lens. = Both of the half cutted lens. Ideally, the soft image should have the nice halo around the sharp core image —– if there was no sharp core image, it was just an obscure bad lens image. = So, how about the one lens was divided into two and the one half makes focused image and the other was making out of focus bokeh on the same one picture ?

From a Kodak (one time use ) Fun camera, the lens panell was cutted-out.

Cut an ordinary lens to optically functioning 2 separate half was not very easy. So, I did it with disposable (one time use) camera’s lens. = Cut it into half (Photo left) and mounted the one half to normal position and the other half to out of focus position (Photo middle). —– (Then I noticed that the lens I experimented makes rather nasty ring bokeh when it was out of focus —– I needed to search more.)

Photo Left was taken by the original single lens. Photo right was done by the W lens.

This W lens is efectively a w-focus lens. I experimented many w-focus image done by double exposure, or lens shift. But here I took a drastic approach to use cutted two halves lenses. —– I think, it wasn’t too bad idea. The work I took was rather awkward though on the end it was well rewarded. ( = I think —– anyhow, I got prenty one time use camera junk to try again and again 😀 )


Our vision — Photo image

This is a part of the previous post —– as I found it got very important point in the aspect of Zen (See — feel — think — what is real — truth) not only in Photography.

Rather fragile looking Scabious —– the lens showed peculiar depth of field image, and the size of back bokeh is gorgeous.

(But have you ever seen such bokeh image in nature ? —– they exists only in the photographic image = they are not real, neither your eyes are telling the truth —– So, how can you tell that the photography IS the faithful copy of the real, without knowing your own eyes could not tell what is real.) 😀

(For example, we are not seeing square building, since we got fish-eye vision as our eyes are round ball, so that, our brain is reconstructing the image following the stereotype that the building is straight = therefore, the photo of the building has to be square ! —– So, how can you tell that the photo of the building is faithful copy of the real building, = you see what I mean.)


Somewhat related reading < St. Lucia — wire figure >


Tagged with: , , , ,

Fuzzy Macro for flower

They are the photos made by a homemade lens called NZ-B = It’s a very peculiar lens, = utterly fuzzy though in the certain condition, strangely it shows quite sharp image.

This one may seemed to be taken by any ordinary macro lens though, with a much of amazement, even an annoyance, it was done by the same NZ-B lens on Nikon Z7, AV mode.

In certain extent, this lens would work just like a fuzzy 40 mm F2 lens.

Still, under close look, the image has quite a detail.

Don’t aske me why I didn’t come here a week ago. —– It’s happened as it happened. (That is what the life is.)

When it was far fore-focused, the image became like this = I like this. I think, no other lens ever made the image like this bokeh. And the bokeh image like this only exists photographically = never in the real world.

Hind-focused (photo left) = lens was sunk beyond the infinity position / Focused (middle) / Fore-focused (photo right) = lens helicoid was fully extended = like for a close-up shot.

(Only one exception, the photo above left was taken by the Pentax 110 Auto 24 mm lens)

Quite exotic flower — I have no idea who she is.

Very impressive though, I never seen her anywhere else. — (Is it a kind of Thunbergia ?)

But this one is very common, yet I love this painting like image. (It seemed that the loss of tonal dynamic range was not caused by the softness of the lens but by the brightness adjustment of Picasa and a very bright color = red.)

Still, the same lens can produce prosaically clean photography-like image as well.

The photographer is believing that they are the user of “Photography” though, in reality, the provider of the Photography (= camera maker, photo journalism etc) is using photographer to keep and run the industry and the idea. So that, “Photographer” was made to believe a type of photography which was provided and such stereotypical style “IS” only the photography.

= The belief IS “Photography is to make a faithful copy of the subject” while blindly believing that his own eyes is seeing the true face of the subject. —– In reality, no such certainty ever existed.

And rather fragile looking Scabious —– the lens showed peculiar DOF and the size of back bokeh is gorgeous.

(But have you ever seen such bokeh image in nature ? —– they exists only in the photographic image = they are not real neither your eyes are telling the truth —– So, how can you tell that the photography IS the faithful copy of the real, without knowing your own eyes could not tell what is real.) 😀

(For example, we are not seeing square building, since we got fisheye vision as our eyes are round ball, so that, our brain is reconstructing the image following the stereotype that the building is straight = therefore, the picture of the building has to be square ! —– You see what I mean.)

——- ! ? ? ?

Here a kind of anemone ? —– anyway, the matter is the image. (If you can make a soft image like this using PS I would like to see it !)

I’m not familiar with this flower —– pretty impressive, and it looks even cannivorous. I wouldn’t be surprised if I see the dead bodies of insects laying inside, half digested. (Do you know what IS the truth.)

And suddenly here rather humble looking flower = the color of blue jeans, Indigo came from this plant. (or larger sister of her)

(If I could stop down, the image could have deeper depth of field though this lens has no iris = always fully open F2. But considering the condition as it was fully open F2, the quality of close focused image was amazingly high !)

Then, funny looking chap = the nuts of ceder tree, not a Pokemon still, he looks very very happy today !

The world seems to be pretty peaceful.


%d bloggers like this: