并不是不需要，而是某些型号不改机，通过后期处理也能达到同样效果。

但是对于某些未改机的普通单反，后期处理时达到同样效果需要额外的工作量。对于另一些普通未改机单反，后期也救不了。

【 在 tongxuan 的大作中提到: 】
: 这篇文章的结论是不需要，作者对于佳能单反的评价很高
: https://clarkvision.com/articles/do_you_need_a_modified_camera_for_astrophotography/
: Modifying digital cameras is not necessary to obtain great astrophotos. Many stock cameras have good hydrogen-alpha response, e.g. recent Canon DSLRs. More important than a modified cameras is proper post processing methods that will bring out and not suppress hydrogen alpha emission, and cameras with good sensitivity and very low thermal dark current. The best digital camera for deep sky astrophotography that I have evaluated has good sensitivity, including hydrogen-alpha, and amazingly low dark current is the Canon 7D Mark II 20-megapixel digital camera. A great full frame digital camera for astrophotography is the Canon 6D 20-megapixel digital camera.
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FROM 61.148.24.*

必要，不然巴环之类的暗星云拍不出来


【 在 tongxuan 的大作中提到: 】
: 这篇文章的结论是不需要，作者对于佳能单反的评价很高
: https://clarkvision.com/articles/do_you_need_a_modified_camera_for_astrophotography/
: Modifying digital cameras is not necessary to obtain great astrophotos. Many stock cameras have good hydrogen-alpha response, e.g. recent Canon DSLRs. More important than a modified cameras is proper post processing methods that will bring out and not suppress hydrogen alpha emission, and cameras with good sensitivity and very low thermal dark current. The best digital camera for deep sky astrophotography that I have evaluated has good sensitivity, including hydrogen-alpha, and amazingly low dark current is the Canon 7D Mark II 20-megapixel digital camera. A great full frame digital camera for astrophotography is the Canon 6D 20-megapixel digital camera.
--
FROM 113.248.151.*