Google 到的中文答案都是要安裝軟體，其實照片中的EXIF參數就帶有快門數，只是一般不會呈現出來。
SONY Alpha shutter/image counter — http://tools.science.si
懶得安裝軟體的人，直接將相機拍攝的RAW檔或是Jpeg檔上傳到這個網址，就可以知道該張照片的快門數值了。
支援這些型號：
Sony A7 (ILCE-7), A7 II (ILCE-7M2), A7 III (ILCE-7M3), A7R (ILCE-7R), A7R II (ILCE-7RM2), A7R III (ILCE-7RM3), A7S (ILCE-7S), A7S II (ILCE-7SM2), A9 (ILCE-9), A33 (SLT-A33), A35 (SLT-A35), A37 (SLT-A37), A55 (SLT-A55), A57 (SLT-A57), A58 (SLT-A58), A65 (SLT-A65), A68 (ILCA-68), A77 (SLT-A77), A77 II (SLT-A77M2), A99 (SLT-A99), A99 II (SLT-A99M2), A230 DSLR-A230), A290 (DSLR-A290), A330 (DSLR-A330), A380 (DSLR-A380), A390 (DSLR-A390), A450 (DSLR-A450), A500 (DSLR-A500), A550 (DSLR-A550), A560 (DSLR-A560), A580 (DSLR-A580), A850 (DSLR-A850), A900 (DSLR-A900), A3000 (ILCE-3000), A3500 (ILCE-3500), A5000 (ILCE-5000), A5100 (ILCE-5100), A6000 (ILCE-6000), A6300 (ILCE-6300), A6400 (ILCE-6400), A6500 (ILCE-6500), NEX 3 (NEX-3), NEX 3N (NEX-3N), NEX 5 (NEX-5), NEX 5N (NEX-5N), NEX 5R (NEX-5R), NEX 5T (NEX-5T), NEX 6 (NEX-6), NEX-7 (NEX-7), NEX C3 (NEX-C3), NEX F3 (NEX-F3).
