國外網站提供對焦方法
from
http://www.astropix.com/HTML/I_ASTROP/FOCUS/METHODS.HTM 1. By Eye
2. Magnifier / Right-Angle Finder
3. Digital Zoom Trial and Error
=> DSLR LIVE VIEW 放大 嗎 ？
4. Hartmann Mask
5. Diffraction Spikes
6. Bahtinov Mask
＝＞ http://www.focus-mask.com/ORDERING_INFO.html
炫大 先前分享過
7. Star Trail Test
8. Hybrid Method - Star Trails with a Hartmann Mask
9. Autofocus
10. In-Camera Focus Indicator
11. Parfocalized Eyepiece
12. Groundglass and Magnifier
13. Hybrid Ronchi Screen
14. Knife Edge
15. Ronchi Screen
16. Live-View Real Time Video Display
17. Software Metrics
好多方式
我只會 用 眼睛
