What's the best lens for shoes and trinkets in the studio? With 600D fuselage.

Just use an ordinary medium focus fixed focus lens.

If it is a small ornament such as earrings, you can consider using a macro lens, which can better reflect the details and the clarity can be slightly higher.

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It is recommended to use a 60 mm macro lens.

On one hand, the price is relatively cheap.

On the other hand, your 600d is cropped, and any lens installation needs to be multiplied by the conversion factor of 1.6, so the equivalent focal length of 60 microns becomes 96, which is equivalent to the viewing angle of a 100 micron lens on a full-frame machine. You don't have to go back too far when you shoot.