{:1_718:}
山南水北 发表于 2022-11-23 19:58
当然。我们是老相识了，在ZOL上就经常看苏老师的片片。
850拍人像、风光都是不错的选择，780的色彩上也 ...
哈哈，原来是老朋友啊！
真羡慕老师，既有780，还有850，真牛！
请问老师：您是先买的850，后又入的780吗？
苏敬远 发表于 2022-11-23 20:19
哈哈，原来是老朋友啊！
真羡慕老师，既有780，还有850，真牛！
请问老师：您是先买的850，后又入的780 ...
780是给朋友买的，我试用过几次，感觉不太满意，所以我自己就入的850，时间不长，拍鸟还不多，还在摸索。但肯定比780强多了。
我以前用D3S，像素太低了，但对焦、连拍和高感都很给力。
山南水北 发表于 2022-11-23 20:31
780是给朋友买的，我试用过几次，感觉不太满意，所以我自己就入的850，时间不长，拍鸟还不多，还在摸索。 ...
老师所说的850肯定比780强多了，具体是指哪些方面？
苏敬远 发表于 2022-11-23 20:35
老师所说的850肯定比780强多了，具体是指哪些方面？
除了高感和LV外，全面超过780{:1_711:}
山南水北 发表于 2022-11-23 20:54
除了高感和LV外，全面超过780
其实，我还真比较在意机器在高感上的表现！如果有机会，老师能不能再借用你的朋友那台780和老师手里的D3S在高感方面做做对比测试呢？
D3S在DXO上的ISO得分是3253，到现在为止也查不到780在DXO上的ISO得分。750在DXO上的ISO得分是2956，据说780的高感比750还要好一些，估计780的高感水平比较接近老师用的D3S。
本帖最后由 苏敬远 于 2022-11-23 21:14 编辑
苏敬远 发表于 2022-11-23 21:00
其实，我还真比较在意机器在高感上的表现！如果有机会，老师能不能再借用你的朋友那台780和老师手里的D3S ...
DXO 低光ISO值 与 EV值的官方换算方法：“索尼A7IV传感器显示出了与索尼A7III非常相似的表现（ISO 3379与ISO 3722），仅有-0.14EV的差距。” 换算到EV值后比较直观。
补充内容 (2022-11-24 08:32):
适马20mm F1.4 DG DN 全画幅超广角星空镜头 ，进光量比F2.8 大1EV官宣：压倒性的光学性能和浓缩了全方位的拍摄功能，“点为点”的高渲染能力彰显了它在天文摄影中的强大，在微光环境下可以捕捉到无限远的小光...
补充内容 (2022-11-24 08:41):
可惜没有尼康接口 新镜网络价 6000多是升级相机高感外的第2个低成本选择 自已也想进一个 星空镜 下阶段有假期 学习拍星空，早出晚归有点不适应，买来后怕镜头也休假。
lihd 发表于 2022-11-23 21:46
DXO 低光ISO值 与 EV值的官方换算方法：“索尼A7IV传感器显示出了与索尼A7III非常相似的表现（ISO 3379与 ...
跟Lihd老师确认一下，这个适马20mm F1.4 DG DN是只有索尼E卡口，没有尼康和佳能卡口是吗？
Veijo1972 发表于 2022-11-24 19:24
跟Lihd老师确认一下，这个适马20mm F1.4 DG DN是只有索尼E卡口，没有尼康和佳能卡口是吗？
是的，适马中国信息 ：L卡口φ87.8mm × 111.2mm 索尼 E 卡口 φ87.8mm × 113.2mm
本帖最后由 lihd 于 2022-11-24 19:33 编辑
Veijo1972 发表于 2022-11-24 19:24
跟Lihd老师确认一下，这个适马20mm F1.4 DG DN是只有索尼E卡口，没有尼康和佳能卡口是吗？
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**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
刚才看了适马网站，
适马F1.4 DG DN的确是只有索尼E卡口和L卡口的，没有尼康和佳能卡口的。