Issues with shadows and focus in antman dataset

First, thank you for creating and sharing this valuable dataset and code samples! I've been exploring it and noticed some issues with shadows and focus in some of the images.

Shadows: In a number of images, the photographer's shadow is cast on the object. This can create problems, for example, when estimating the environment map and material properties.

Focus: Some images have the object partially out of focus due to a shallow depth of field. This can affect texture estimation performance too.

Here is a table with some examples (click to expand).

| Image | Photo |
| ------------- | ------------- |
| **Shadows from photographer** |
| image_0055.png |  |
| image_0035.png |  |
| image_0037.png |  |
| image_0038.png |  |
| **Focus** |
| image_0046.png |  |
| image_0047.png |  |
| image_0048.png |  |

While these issues may be challenging to fix, I hope this report helps others in debugging.