Focus Shift (C) at Somerset House

——- (this photo above was made accidentally = overlapped with wrong image.)

This was almost the first field test of the Focus-shift photography ( while driving

lens’ AF motor automatically) —– There were several attempt to do the same by

manually rotating the focus before.    But, manual operation creates too much

blur and the success rate was rather low. (So, this is a long standing project.)

Thanks to the lens I used, Canon EFS 18~55mm, I could use the lens from 24mm

to 55mm.   Though, the wider the lens, the image-size changes more, and creating

funny image. (= I’m not happy at all = to counter this problem, I did the Focus shift

together with adjusting the zoom ring to keep image position the same.) 

So that, unless I found the remedy, this technique is not matured enough.

And the subject this time was not suite for the technique. — it seems that

“Two Element Homemade Lens” does better job.  🙂

(—– on the point of creating painterly, impressionistic image.)  

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Zeiss Talon Lens

It was the same odds and ends box of the camera shop, City Camera Exchange

in the Strand, London, where I found Carl Zeiss projection lens for £2.

(in fact, together with some lens caps, hood etc = lens alone could be £1 ?  😀 ) 

I guess, this lens must be as old as 50 odd years, and the slide-projector

which takes this lens must be long gone and impossible to find even

coming through all the junk shops in London.

Therefore a chance for this lens to meet THE rightful user who got the

Zeiss projector and looking for the replacement lens is virtually nil,

hence it was sold £1. —- instead, the lens encounter the NOT-right at all

kind of user. (= And I guess, it was also a very rare occurrence to encounter   

a person who could utilize the lens like what I did.  😀 ) 

(Projector has a problem to find the specifically designed projection lamp

= therefore most of the owner has found an obsolete situation and gave-up.

—– in fact, I was asked several times to modify the projector to use the

common 2pin halogen bulb.)

Test the lens by mounting it on my Homemade Tilting Bellows, this lens

showed very reasonable (rather good) quality.    Lens seems to have three

lenses (Tesser type ?) and naturally no Iris (it’s mean full open F2.8 – 85mm

= very much like a 6×6 Spring Camera or Twin- lens Reflex Camera lens.)

Top photo showed general distance and the photo above left showed very

nice Bokeh on its close-up shot.    And the photo center was x1.5 close-up.

Photo right was the shot of tilted lens = Pan-focus and Shallow-focus effects.

= I should say, pretty good “Zeiss Lens” for £1 was too good to be true.   🙂

(But, this lens was too decent = out-of-focus Bokeh was very soft though,

no fancy spherical aberration to make fuzzy softness. — shame !)  🙂

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Focus Shift (B)

This is THE pretty girly picture.  But, you may not able to guess what sort 

of the lens I used. —– Well, this was done by the Sigma 28~200mm Zoom,

at 200mm F5.6 with Focus-Shift.

Here, the photo left was a normal shot and the right one was with focus-shift.

(Click and enlarge the photo to see the details = sharp details still there

together with out-of-focus bokeh.)

The photo left was the Canon EFS 18~55mm —– the red and white wires

were connected to its AF Motor.  And the center was the Sigma 18~200mm lens.  

Photo right , the Yellow arrow pointing its AF Motor, and its right on the photo, 

white gears is controlling the size of Iris. (Gear was driven by a stepping motor)

= but by rotating this gear with a finger, the Iris = F-aperture could be changed.

Though, it’s not easy to know what exact the value of  “F” then, since it’s fully 

open value changes from 3.8 at 28mm to 5.6 at 200mm, hard to know what is

somewhere between.  Just trust your camera’s auto exposure.  🙂  

Even with smaller F-aperture, out-of-focus Bokeh is always there.

= and this Bokeh is making the photo looks soft. Though, Bokeh mean

scattered light.  Hence, it reduces the contrast of the photo = may need 

to tinker it by making the photo darker and then brighten the highlight

to increase the contrast. — if it was necessary) 

—– Now I got box-full of broken / malfunctioned lenses = a lots of fun

is waiting to be discovered.  Ha ha ha  😀 

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Appropriation

The controller I made to create a Focus-shift effect for the photos was using

the battery case from the discarded Canon G9 camera together with its battery

= NB-2LH.

What I needed was much smaller battery though, other choices were the

battery for Lumix camera but they are 3.7v (it needs to be more than 5v)

otherwise AAx4 or AAAx4 type. —–> I settled to the Canon battery.

As the brand-name suggests, it was a well made battery system = easy

to use and could last for ever kind. (I mean the case, not the battery itself)  🙂

 Commonly used among the Canon cameras,

 the battery retaining latch was well designed 

 and made.

 —– think, if I had to design this kind myself,

 what would I make and need to work ?

= conclusion = if it IS already there, why not

use it straight.    It could save

all the hustle, still it cost nothing. 🙂 = This is called appropriation.

— this word gives pretty bad impression though, think about, is there

ANYthing we are NOT appropriating for our life.

= All the foods were happen to be there, not necessary to be eaten by us.

= We are just appropriating its edible character and its existence. (Only a food

we are not killing for us to eat IS the humble salt.)

—– Give a thought or two, have we human being ever contributed to a survival of

this planet and its life form ANY good ?

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Even an electrical component which was a human invention, still I didn’t make

= I’m just using it.  Isn’t this, an appropriation of its character and the function ?

There are two types of the semi-conductors, one would open the gate and allow

the electric current to flow when positive signal was given, other type does open

the gate when negative signal was applied. (they were called NPN or PNP type or

N-channel or P-channel type etc) = We are just utilizing the appropriate type of

component to configure the circuit.

What we call “Landscape photography” is in fact, an appropriation of the natural

(though, sometime man-made) scenery to copy — there is very little opportunity 

to create the image out of nothing. —– You may not guessed 

what I would write here —– this network of appropriation is indeed, what

Lord Buddha pointed out “the Karma” = nothing could exists by its own.

___/\___

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Focus Shift (A)

Focus shift is a kind of the holy grail to me in the soft image photography

together with the camera vibration.   Since the images of both techniques

were affected by the three dimension or the depth of the subject, it wouldn’t

be replicated by a digital graphical manipulation or a soft filter.

(effect of filter appears everywhere flat, same as a graphical effect —

otherwise it needs to give days of manipulation, pixel by pixel.)

So that, I’ve been working for this quite a while, hence such as the lens

 in the photo appeared here long ago. (Lens was Canon FD 50mm F1.8)

A device I made was not so complicated electronic controller which takes

the signal of the shutter-open from the Flash-hot-shoe then to start the   

AF motor in the lens, hence focus-shift (from the pre-focused point.)

= in the effect, the resulting image has both focused sharp image and

 an off-focused, fuzzy halo around.   The beauty of this technique is,  

it is not rely on the lens’ aberration but the out of focus Bokeh, therefore 

it can be done with any focal length. (as long as I got such modified lens) 

(For another lens = “softness made by the vibration of the lens” = which

can be done with ANY = non modified lens, would become ideal.)

(Click and see enlarged photo — the sharp detail is still there. )

(The field report would be coming soon.)  🙂 

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Magnifier glass on test

A guy who’ve read my blog about the experiment on the fuzzy junk lenses,

teased me “Why not those reading glasses ?” —– Indeed, why not test.

So that a Magnifier / Reading Glass was stucked on a bellows and tested.

(This lens has about 135 mm focal length.)

— as it is (Fully open), or with improvised Iris. (Photo above Center)

—– and later, I tested Flat-lens (Plastic Fresnel Lens) as well.(Photo Right)

Photo above Left = magnifier fully open.  

And the Center = With Iris (about F11) — halation was reduced though, utterly

poor image quality.  

On the photo Right = (part enlarged center), as the flair / halation was removed, 

the chromatic aberration (=red and blue on the edge) clearly prevailed.

And this is the image made by a plastic fresnel lens. (Looks like an image

of a Pin-hole camera, made by a 0.7 mm big pin-hole. )

(Don’t get me wrong, I’m not a fan of this kind of crap image.

But I still say, crap image is still an impressionistic photo image. 🙂 )

(And the photos above are the reference = taken by the Canon EF 70~200 mm

F2.8 at 135mm setting on F8)

In addition, this photo was by the 50 years old Pentax 135mm F3.5 Lens 

on F8.  (Not too bad from the £10 secondhand lens with fungi.)

We may need to know what is the descent standard — at least.  😀

Crap image is not same to the soft image I’m after

(= soft image still need to have its sharp core in the center.)

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Cherry on Antic Lens

This is the last cherry photo on this season (I think.  🙂 )

They were shot by the 100 year old German Anastigmat lens on Canon 5D.

This photo above was shot while Iris was fully open.

And this one was with (about) F11. —– See the deeper depth of field.

This photo was with the fully open Iris (F5.4) 

And this one was with F-11. —– 100 year old. No coating. But with lots of fungi !

Still works quite well = amazing.   🙂

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Sweetest Cherry Photo (so far)

Those photos were taken by a lens came from a Tokina Wide-converter and

its converging part of the lens has about 160 mm focal length, I call it Tele-soft.

In fact this lens can have a quite sharp image when an Iris was placed and the

spread of the light was centered — otherwise, its F4 equivalent of optics

produces beautiful soft Bokeh.     As the lens was mounted on a bellows, it is

quite awkward to use still, it can easily make a good close-up image as well.

I hope you appreciated to see them.   

(Honest ?)  🙂

PS : I didn’t use any filter or PS digital manipulation at all

—– only clopped and the brightness was tinkered on Picasa free program.

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Graffities in Peckham

Those photos were a part of the test shot of the 100 year old lens. = Generally,

the lens works pretty well — considering to its fungi infested aged state.

(Under large magnification, we can see the halation is eating away each detail.

The halation around the bright spot must be caused by the scattered light on the

fungi.  And the images near the corner is much softer = the lens’ aberration.)  

But otherwise, this lens doesn’t seemed to be worse than those phone-cameras.

To enlarge the shiny metal part, the halation is quite visible.

But the question is, who notice it and who care such details ?

— Some professional photographers may need to have the image part enlarged

for an editorial reason though, otherwise most of the camera user is using their

photo smaller than a tablet size. = so, this 100 year old lens is good enough.  😀

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Snapshot by 100 year old lens

The photos here are the first field test of the lens from 100 year old camera,

= Doppel Anastigmat of Steinheil Munchen —– so that they were just

the random snapshot in the Peckham, south-London downtown.

In certain extent, Peckham said to be a nice vibrant place though, when I walked around,

I’ve come across a Police cordon, notice to seek a witness for rape attack kind etc.

When local MP Harriet Harman (local though, she is living in the much nicer hillside

miles away   🙂 ) walked about the town with Police, she was wearing bullet-proof jacket

(hence created big public uproar).     The place was dubbed as “Little Lagos” as lots of

Nigerians were living here still, these days, I saw many Kosovars,  Vietnamese,  

and ever increasing Chinese. (used to have a lots of Afghans as well) 

With its ethnic mix, the vegie shop is selling from hottest Habanero Chilli

(Photo top), Plantain Banana, huge Yam to Bok Choy etc and the meat

 is Halal (for Mosrim). 

Since the lens got awful lots of fungi which I can’t clean as they are between 

the stacked lenses, the halation is inevitable, still it’s managed to capture 

some details in the shadow ! = rather amazing.

And even Peckham has Cherry too ! 

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