Here are a few tips for taking photos of CNC machines for sale:

1. Use a high-quality camera: A DSLR or mirrorless camera with a good lens will give you the best results.
2. Use proper lighting: Make sure the machine is well-lit so that all of its features are visible. Avoid using flash, as it can create unwanted shadows.
3. Take multiple photos: Take photos of the machine from different angles, including close-ups of any important features. This will give potential buyers a good idea of what the machine looks like and what it can do.
4. Clean the machine: Make sure the machine is clean and free of debris before taking photos. This will make it look more attractive to potential buyers.
5. Use a tripod: A tripod will help to keep your camera steady and prevent camera shake, which can lead to blurry photos.
6. Take photos of the control panel and any other relevant control, also including the technical specifications if possible.

Remember that the more detailed and informative your photos are, the more likely you are to attract the attention of potential buyers.