Camera Raw/DNG: Adobe Lens Profile Creator for Underwater Macro Setup

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  • Updated 1 year ago
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I'm trying to set up a grid in Adobe Lens Profile Creator to calibrate a lens profile that includes:

Sony FE 90mm macro lens,
Underwater housing glass, and
An external close-up diopter (Inon).

I'm shooting the images using a Sony A6000.

Because of the 90mm lens and the very close focus, I've tried the following combinations of grid:

7x9 grid and 4 point square.
9x15 grid and a 2 point square.

The actual overall size of the taken image is 25mm wide by 15mm high (approx).

In both cases, the Lens Profile Creator is unable to detect the grid in all 9 photos.

Has anyone had any success with such a small grid size?

Any suggestions to improve the chances of the Creator being able to detect the grid and make a usable profile?

Cheers,
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daniel vaughan

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Posted 1 year ago

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Chris Castleberry, Camera Raw Engineer

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Depending on how you printed the charts, grid detection might be failing due to ink bleeding that is more easily picked up by the macro focus distance. If this is the case, you might try having the charts printed on a high resolution printer to improve the uniformity of the checker board edges.
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daniel vaughan

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Thanks Chris,

Agree this may be the case. It's pretty difficult to get a decent grid to fit within a 25x15mm space. Attached are two reduced size JPG of the central shot of the grids i produced on my laser printer (one 9x15 @ 2 point and another at 7x9 @ 4 point).

No one around me here in Sydney, Australia really promotes themselves as a very high resolution print service - at least they don't talk in technical specs. I'll just have to ask around.

The faint rectangle you can see in the first image is a 25x15mm rectangle.