今天收到 2019 四月的日文天文Guide 雜誌,因為不懂日文,只是看看裡面的照片做為未來拍攝的參考。但這期裡面有篇文章似乎提到與我類似的問題,想說 01 這邊高手這麼多,應該有人看得懂日文,是否可以大略翻譯一下,這篇文章的內容與我提出的問題是否一樣?(如果是文字檔就可以用 Google 翻譯了,這樣就能猜個幾分)
把原始 RAW 檔給恆伸請他們詢問原廠,得到的回覆:
「 I got information from our optical engineer, and was told that it is a type of diffraction phenomena. It is noticeable in lenses with long focal lengths and large f-numbers, and can be improved the symptom with small aperture settings. So it is not a fault, but a characteristic of the tele-photo lens under the certain shooting condition.」