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Sony 相機 破解限制+ a7 吃星點問題
2018-09-25 00:06:42 *
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作者 主題: Sony 相機 破解限制+ a7 吃星點問題  (閱讀 9265 次)
peter
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« 回覆文章 #15 於: 2018-02-01 11:33:38 »

https://www.dpreview.com/forums/post/60638274

There seems to be a workaround to avoid the Star Eater issue on the Sony alpha camera's. Setting it to continues-Hi shooting mode should avoid the star eater algoritm from kicking in after 3/4sec....although, setting the camera into bulb seems to be a no-go since star eater is a plied again.

I personally think that the Star Eater issue is made bigger then it really is. Of course it's a pity that Sony implemented this feature, but most of us astrophotographers wouldn't even notice some stars were eaten in their image. Take for intance the image below, which was shot with a Sony A7R2 at ISO1600 and 60minute subs (90 of them to be exact).....there are probably stars eaten, but I can't see them because I don't even know they were there in the first place.....get my point?

So just go out, take the shots you like to take, and share your results here.

Just my 2 cents.
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« 回覆文章 #16 於: 2018-02-12 16:56:24 »

https://www.lonelyspeck.com/how-to-fix-sony-star-eater-on-the-a7sii-and-a7rii-continuous-shutter-mode-workaround/

https://www.facebook.com/photo.php?fbid=1733910746628967&set=gm.1663276577062499&type=3&theater

B 快門模式下不能用連續快門
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peter
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« 回覆文章 #17 於: 2018-08-14 22:16:01 »

https://www.sonyalpharumors.com/sony-solved-the-star-eating-issue-with-the-new-a7iii/

UPDATE: Jim Kasson has just started testing the A7III spatial filtering. And while there is no final conclusion yet it looks like the A7III may has not fixed this issue once and for all:

    There was a recent posting to the effect that the spatial filtering (aka “Star Eater”) present in many a7x cameras and firmware releases at shutter speeds of longer than 3.2 seconds has been “fixed” in the a7III. The spatial filtering is different, but it has not disappeared.

This means we have to hold off and wait until Jim has made the complete testing.
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« 回覆文章 #18 於: 2018-08-14 22:22:14 »

MOBILE01 討論
https://www.mobile01.com/topicdetail.php?f=254&t=5227618&p=6

會吵這問題主要是舊版的韌體並不會出現這現象,
結果為了修正熱躁點的問題,更新之後才產生,
然後一開始好像只有特定模式才會出現這現象


* 圖片 8.jpg (255.58 KB, 810x661 - 已被閱讀 95 次.)
« 最後編輯時間: 2018-08-14 22:24:57 由 peter » 已記錄

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« 回覆文章 #19 於: 2018-09-12 11:01:25 »

https://amazingsky.net/2018/05/31/testing-the-sony-a7iii-for-astrophotography/

a7III long-exposure spatial filtering
https://blog.kasson.com/a7iii/a7iii-long-exposure-spatial-filtering/

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« 回覆文章 #20 於: 2018-09-12 11:04:02 »

https://petapixel.com/2018/06/08/sonys-star-eater-problem-has-been-defeated-in-the-a7-iii/

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« 回覆文章 #21 於: 2018-09-12 12:16:08 »

https://www.facebook.com/photo.php?fbid=2585239824823192&set=p.2585239824823192&type=3&theater&ifg=1

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« 回覆文章 #22 於: 2018-09-12 12:32:11 »

http://www.markshelley.co.uk/Astronomy/SonyA7S/sonystareater_v2.html
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« 回覆文章 #23 於: 2018-09-12 13:41:02 »

https://www.facebook.com/photo.php?fbid=2585336204813554&set=p.2585336204813554&type=3&theater
APM107/700 
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A7 v1.01 5分鐘



sony A7 某些板可不吃星
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