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Comment by warning26 | Hacker News Reader

I think what makes these images so impressive is the depth of field — without the characteristic blurring of far and near objects that typically comes with macro photographs, the violins appear to be vast interior spaces.

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I would argue these are not really macros though. They have a wide field of view and are also not that "close". I suspect they likely use something like a gopro to get into the tight spaces.

A previous discussion [1] of a similar project used a Lumix S1R camera and a Laowa Probe lens, with numerous images combined to create the effect.

[1] https://news.ycombinator.com/item?id=29389442

Is this physically possible or is it renders?

It should be possible with focus stacking, but it’d take a hell of a lot of images.

You can get a large depth of field by stopping down, no need for focus stacking. Also the lens used here was quite wide which increases the depth of field (simplistically speaking). The main challenge in these images is the lighting, which arguably is what makes them look so awesome.

> Also the lens used here was quite wide which increases the depth of field (simplistically speaking).

It doesn't for significantly non-zero magnification like this.

DoF is a geometric thing, it's proportional to (distance to object / focal length)^2. A narrow DoF is caused by the object being close to the camera (in terms of 'number of focal lengths'). (It's also related to the aperture)

Therefore a physically small camera (think a phone camera) will have a wider depth of field, for a given scene and f-number, than a larger camera.

In other words, the inside of a guitar is a relatively large space if you're a tiny camera with a 5mm focal length.

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