Yoshizen's Blog

Wide-converter to Soft Telephoto Lens

Tok' W-converter-1-A09A8030

It may looks a bit drastic action to deal with camera optics.  🙂 

Though, today’s camera lens made by a plastic was often fixed by a

liquid glue hence impossible to disassemble. = So, it calls drastic action !

—– There was a funny idiosyncratic subconscious = optics has to be handled

with kids-gloves on.   And this apply to a gear obtained for almost nothing.

Tok' W-converter-2-318-001

So, the edge of the Wide-converter (and its Lens Retaining Ring) was cut.  

And the ring was (carefully) lifted-up and removed. (Photo above left)

= Then the converter’s front concave lens was separated from

the converging rear optics. (Photo right, center front. — this concave lens 

looks as strong as minus 15 diopter.) 

Tok' W-converter-3-321-001

Mounting this “rear section” of the converter to a DSLR camera —–

I found this optics works as an (about) 160mm telephoto lens.

And as I expected, the image produced had a lots of aberration = fuzzy images

still, by reducing the original (about) F-4 to F-11 with a hole on a black paper

(Photo above Right) the quality of the images were drastically improved.

(but don’t expect a quality of thousand pound genuine lens)  🙂 —– in fact,

this optics had achieved what  I failed before with the Tamron 300 mm lens.

= Soft Telephoto Lens !

Tok' W-converter-4-319-001

The Photo left was fully open.  ——— And the Photo right was F-11 (?) ! ! !

But to be fare to the expensive lens, they are not just boasting the quality.

(I wouldn’t play ignorant for the sake of fuzzy image.   🙂 )

Tok' W-converter-4A-326-001

This photo was taken by the Canon EF 70~200 F2.8 at 200 mm

and a clopped center.

Tok' W-converter-4B-001

And this photo was by the Tamron Mirror 500mm F8 and a clopped center.

Tok' W-converter-5-320-001

In a closer range, the effect of Iris (full or F11) looks so clear. = It’s mean,

by changing the size of a hole in a black paper (white paper may

increase the halation even more.  🙂 ) we can chose the softness to the

degree what we prefer.

—– So, I had a fun. (and planning the field test)


5 Responses

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  1. […] photos were taken by a lens came from the Tokinar Wide-converter […]

  2. […] In this photo, Left is the Detachable Wide-angle (Diverging) Lens.  […]

  3. […] Tokina Wide-Converter. […]

  4. Cherry Cherry – 2016 | Yoshizen's Blog said, on April 23, 2016 at 09:50

    […] Lens used was that modified Tokina-Wide-Converter […]

  5. […] Chinese crap.  — I wanted their lens component, not the function of wide converter.  So, I hacksawed it to take front concave lens out. (which became to the front element of “Wide angle Pinhole Machine“.  And the left […]

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