Wide-converter to Soft Telephoto Lens

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.

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.) 

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 !

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.   🙂 )

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

and a clopped center.

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

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)

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