Best photo size?

[tvone]

When using VSF, how much distance is needed from the position of the letter? Crop the image as close to the text as possible, right?

[SWHL]

Yes, just try to get as close to the text as possible

[tvone]

Do I need to adjust this setting to better detect RGBImages files? For example, text color and text border

[SWHL]

You can try it with default setting firstly.