Sunday, 24 April 2011

OCA Course: Shiny Surfaces.

Shiny surfaces: I tried this with greaseproof paper but it proved too flimsy, so I cut a hole in the bottom of a translucent plastic container. The hole was too big.

1. Silver Tray: strong directional sunlight from a window. Yes, I have fair hair and arthritic fingers.


2. Silver Tray: with the diffusing bucket - a horrible milky appearance and still the camera reflection because of the big hole. Lighting the same as in 1.

3. Silver Purse: the specular reflections have caused under-exposure. Heavy shadows evident.

4. Silver Purse: with diffuser the object is seen better and the shadows reduced.

5. Scent Bottle: strong sunlight has transmitted blue to the background.

6. Scent Bottle: with diffuser, the bleed of blue light has all but been eliminated, and the detail in the silver improved.

7. LLSBA Paperweight: directional light gives good contrast to the engraving, but specular reflections are a nuisance.

8. LLSBA Paperweight: the diffuser has completely flattened the contrast, and the image is worse.

9. LLSBA Paperweight: reducing the exposure improves the contrast, and the specular reflections are less evident.

10. Glass Bowl: direct light shows some detail in the shadows.

11. Glass Bowl: with diffusion, the contrast has gone and a flat image with poor detail results.

Conclusion: Whilst the application of a "light tent" can improve images of some shiny objects, it doesn't work for everything. A professionally made tent with pure white even illumination would probably give better results, but to some extent, it's trial and error.

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