Yoshizen's Blog

Morning Sky on Oct’ 2018

Mo-Sky(1)-DSC_0883

( 13-10-2018   / 06:04 —– by Zeiss Distagon 18mm F3.5 for Nikon on Nikon D850)

It seems this was the only second morning red sky in this autumn.  Whether it was the matter of the angle of the Sun or the clarity of the Air, we don’t have red sky in summer.

Wide Fun

(The same sky by Omnifocus Fun lens on Sony A7R —– / 06:05)

 

( 05:58 —– by the Kodak Vest Pocket camera lens on Sony A7R)

(05:55 —– / Zeiss Baby Ikonta lens on Sony A7R )

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Halina Wide or its lens

Often I’ve been using a term “Junk” or “Toy Camera” quite casually, despite of a bit of guilty   conscious.    Many years ago, once I strongly complained to Nikon, when they produced a (relatively) cheap Nikon EM with its back-light compensation button in blue plastic (it really looks cheap plastic) I said to them (to the boss of Nikon UK) “Don’t make cheap camera looks cheap” “Although, it is cheap, for the young student from a poor back ground, it must be an affordable limit, and their dream and the treasured possession” “Make it looks cheap and make them feel shabby wouldn’t create the future of Nikon any good return”= so, they changed the button to chrome colored. —– Yes for some people, so-called Toy Camera was still only a camera they could afford. 

halina1-a09a6979

On the photo, you may see 4 of the Canon EFS 18~55 — in fact I had 2 more which I’ve completely taken down to the pieces for study or use the motor etc. for the other purpose (such as this front element or that).

People may misconceived that a kind of the work I’ve been doing, it must be done in a well equipped proper workshop. (Quite few people thought I got a Lathe machine, even a Laser Cutter.)  They were wrong, the works were done in my kitchen mostly by a hacksaw.  (if it was a very dusty work, done in a bath tub (without water of course)

halina2-1 Forget a political correctness kind —– the reality IS, the cheap camera which end-up in an odds-ends box as a junk was just made by an ABS plastic mold + plastic parts = nothing like each mechanical unit was assembled on the metal frame like a more expensive counterpart.    So, to disassemble a junk camera meant hacksaw the area I need to gauged out from the lest. 

halina3

Then, gauged out lens unit (in this case 2 plastic lenses) was temporally attached on the camera to see the exact position. (Photo left)   And test mount the lens unit on the camera body cap. (Photo middle)  On the end, this is the finished product. (Photo right)

While toiling with such hard work, what sort of the image could be created ?   In reality, nothing special or rather say, it’s a crap.

halina4-001

Not necessary the infinity, but this is a far enough distant objects.   Tree twig looks twig = seems OK.

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And without having refocus (no such things here), the subjects, a meter or so looks like what we are seeing.  May be this is the point, we are amazed.  (Really ? !)

Wait a moment, think again.  A lens of 28mm (for full frame) would have rather large depth of field.  Say, fix the distance to 1.7m and set the aperture for F8, the subjects from 0.8m to somewhat 20m (almost “far”) would be (regarded to be) in focus. 

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So, this IS the image made by a lens (Canon EFS 18~55) fix to 28mm, 1.7m and F8.

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And this IS the close distance image made by the same lens without chang anything. (focus was still 1.7m)

It must be clear, so-called omunifocus is not necessary an amazing phenomenon. Here is a very simple common sence in photography = Stopped down wide-angle lens can shoot anything.  (But the trouble IS, it would make the photo looks messy — to express, the less is more)   🙂

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Fun with Alpha 7R

Alpha Fun(1)-A09A6544

My newly arrived toy, Sony A7R has quite a few advantages to many

other cameras. — Not mention small and light, but it’s remarkablly

thin body and the flexishible control system to accept many kind of

the lenses, gives great opportunity to play with fancy optics =

and have a fun.  😀

Alpha Fun(2)--001

On this occasion, I show you how to utilize junk camera lens.

The Camera came from an Odds Ends box of a shop, was it £1 ?

— I don’t remember.    The lens was literally gauged out from the

plastic body. (Photo Left)     And it was stack to also gauged camera

body cap. (Photo Middle) —– and put onto the A7R. (Photo Right)

Alpha Fun(3)-001

I couldn’t figure out who made this camera, nevertheless,

it’s says focus Free ! = The lens stack on the A7R camera produced a

photo like this = far subjects (Right is the enlarged image)

Alpha Fun(4)-001

And to the subjects less than 1m distance without any change of focus !

(exposure was given by the camera’s AV setting)

Alpha Fun(5)-A09A6541

The camera, A7R gives so-called “focus peeking” and showing it

as the Red lines on the View Screen. (It’s mean, the camera thought,

that area has be in focus.)

—– ? ? ?  Then, I started to wonder “What they mean FOCUSED”

(From now, I wouldn’t trust what they says.   😀  )

Alpha Fun(6)-001

And the trouble of the A7R seemed to appear, they ARE very seceptic

to the camera shake. = this picture was 1/160 sec’ shutter speed with

ISO 1600 —–> Still I needed to use a tripod for the photo one above !

(Obviously, a small and light body with

such noisy shutter creates big shock ! = No wonder, why they needed to

redesign new camera with quiet shutter = My one was a defective !)

It’s not funny.

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Jessop’s Fun-camera Lens

Jessop Funcamera-2-001

I found yet another fun-camera (One-time use Camera / Camera with Film)

in an Odds and Ends Box of a Camera shop. (for a couple of pounds)

Jessop Funcamera-1-001

This time it was a Jessop’s product though, since Jessops disappeared many years 

ago, this product was also pretty old.   Old enough to be rotten deep = supposed be 

an unused battery inside was completely corroded and the chemical has been leaked.

Branded Jessops though, it was a Chinese made = hence cheap battery was rotten.

This was an interesting product.   As a Chinese made, it could be a complete

Copy-cat product though,  the Jessops then was a well known English company 

= they could be an easy target of a lawsuit for a Copyright infringement.

So, they didn’t copy the lens by taking a mold —– instead, they put their own

Two-element Lens for this camera.     When Japanese film company, Konica,

Fuji, invented the disposable camera (one-time use camera), they designed the

omnifocus lens using pretty fancy aspherical design.

And to make the camera able to take photos under different lighting condition

with fixed shutter speed (about 1/60th second) on ISO 100~200 film, the

lens has to be about F4~3.5.  Especially after flash light was incorporated,

to have a reasonable picture for 3m, the lens can’t be smaller. = It’s mean,

pan-focus with smaller F-aperture was not an option, therefore, they had to

design sophisticated aspherical lens which could produce a reasonably well

focused image in any distance with F4 diameter (7~8mm).

—– But, without using aspherical lens, Jessops opted to the simple two lens

design with smaller F8 aperture setting, while taking advantage of the

higher ISO sensitivity of 400.

Jessop Funcamera-3-A09A2172 The trick here was,

 F4 x2 = F5.6  F5.6 x2 = F8    while

 ISO 100 x2 x2 = ISO 400 (the same)

 —– and F8 can give much deeper

 depth of the field

 (= Pan focus effect using ordinally 

 lens though, F8 is not enough for

 close focus). 

 I tested this lens attached with rather

 heavy concave lens to extend the 

 original 27mm focal-length to 44mm, 

in order to use on the Canon EOS, (Photo left)

(thus, 3.5mm lens diameter, now gives F13 = pretty dark to see the finder image)

 

—– Not only that, the image produced by this lens was utterly rubbish. = when F13

lens could make only trash image while having no fancy fuzziness (F13 couldn’t 

have any chance of nice fuzziness) = there wouldn’t be any point to use this lens.

—– Well, not all the experiment has been a successful one.   😀

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