Yoshizen's Blog

Remove the reflection

Reflection(10)-DSC06933After I published the post “Instamatic Macro” I received a mail asking me how I could manage to eliminate the reflection inside of the shiny Macro Tube.   The man was a reader who read my old post “ Tiny Life ” long time ago and in fact, he made the same Macro adapter using similar aluminium can, but having the trouble from the internal reflection. 

(He said that he splayed the inside with a Mat Black Splay Paint though, even with such paint, the surface was pretty smooth and making rather high reflection which is ruining the image.)  On top of the smooth surface, the inside of the round pipe acting like a converging mirror, making a hot bright-spot in the center of the image.  (Hence, its reflection created the images in the previous Post —– though, those photos were the exaggerated reflection from a shiny metal pipe, not from the real macro tube.   😀 )

Reflection(11)-DSC06943There are the several method to eliminate the internal reflection = Applying a good Black Velvet is the one, though to glue-up a soft cloth inside of a small can is a very awkward task.   ( I can guaranty you struggle — I know, as I did it before.   😀  )     Proper design will put the proper light barrier discs, though, to insert the full-size disc need to have a full opening of the pipe-end.   Bend and insert a semi-flexible disc (ring) and make it stand in the position is the other way.   (Still, not easy though.)

Reflection(12)-000—– What I did was, to insert a paper spiral inside.   I made a spiral using a semi-soft (stiffer than drawing paper) = (First, made the 3 paper rings which got 2 mm larger  diameter of the can’s internal diameter— then cut and connect them to make a spiral) Then this spiral was slipped inside of the can.  (It needs a good rotating manoeuvre ! ) (I made a paper tool to catch and move the spiral = Photo left.  And how to use it = Photo right.)  —– when the spiral settled in the good position where all the reflection and the glare was shielded, fix the position using a glue.  = Job done !   (for the clarity sake, in the photos, the edge of the spiral has not been painted black. —– I hope, you can see how to work-out this game.)

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PS : For an educational purpose,  I’ll show you the scene behind. Reflection(13)-000Photo left was the same mosquito but without having a reflection eliminated.      And the photo right was how the spiral inside of the macro tube looks like.

 

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Reflectgraphy

Reflection(1)-DSC06936
Those images were the products of which I didn’t intend or a by-product occurred in the other process.

You will see what I was doing on the next post.







Half of the Photography said to be made just by chance encounter — may be true.  😀

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