Webb has two main cameras, NIRCAM for near-infrared, MIRI for mid-infrared. MIRI is lower resolution because it's looking at longer wavelengths. This image is

Webb has two main cameras, NIRCAM for near-infrared, MIRI for mid-infrared. MIRI is lower resolution because it's looking at longer wavelengths. This image is from NIRCAM, so it's the highest res Webb can do. Neptune is small in the image because it's very far away. The images you see of detailed nebulae are so high res because, even though they're further away, those nebulae are enormous.