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Problem with A7RV and High Speed Sync on Godox AD600pro, X3s

Alex_Sa
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Alex_Sa Newbie

Alex_Sa

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Problem with the Sony A7R5 and the Godox AD600pro, V860 ii and X3s. The high speed sync (HSS) only works in the camera's "fill flash" setting and there when you set TTL it fires 5 consecutive flashes instead of one. Furthermore, it works, let's say correctly (rather overexposed) up to a speed of 1/320s. From there, the more you lower the speed to 1/1250 or 1/2000, the more it underexposes them. The flash illumination remains stuck at 1/8, that is, as it was at a speed of 1/320, although there is the possibility of increasing it to 1/1 as is done in the manual setting. Can someone solve the underexposing problem in the high speed sync mode of the Sony A7R5?

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    • Richard A
      A6700 LOG iso et FW

      By Richard A · Posted

      The A7R5 has dual minimum ISO. For shooting S-LOG 3 video, those minimum ISO's are 800 and 2500. For shooting stills they are 100 and 320. I don't believe the A6700 has dual ISO. Have a look at this video: Sony a7R V Dual ISO EXPLAINED! Best Low Light Performance ISO Settings
    • Alex_Sa
      Problem with A7RV and High Speed Sync on Godox AD600pro, X3s

      By Alex_Sa · Posted

      Problem with the Sony A7R5 and the Godox AD600pro, V860 ii and X3s. The high speed sync (HSS) only works in the camera's "fill flash" setting and there when you set TTL it fires 5 consecutive flashes instead of one. Furthermore, it works, let's say correctly (rather overexposed) up to a speed of 1/320s. From there, the more you lower the speed to 1/1250 or 1/2000, the more it underexposes them. The flash illumination remains stuck at 1/8, that is, as it was at a speed of 1/320, although there is the possibility of increasing it to 1/1 as is done in the manual setting. Can someone solve the underexposing problem in the high speed sync mode of the Sony A7R5?
    • caraibe
      A6700 LOG iso et FW

      By caraibe · Posted

      Merci beaucoup de ta réponse. Pourquoi tant d'iso ? c'est de nuit 2500 iso ...Pourtant c'est un plein format  Avec le A6700 j'ai d'excellents résultats en LOG à 200 Iso et pas besoin de filtre neutre  Mais Le A7R5 est sans doute différent ...Pas donné le boitier ! Perso je me casse pas la tête pour l'expo LOG 4:2:2 10bits ça supporte pas mal les corrections d'expo  Mais je ne suis qu'un modeste amateur ...Ce qui n'empêche pas des exigences en qualité d'images. Avec le A7600, Sony a sorti un très bon boitier APS-C à un tarif abordable   Les gars de l'autre forum ont finalement trouvé pour son LOG à moins de 800 iso  Tu devrais pouvoir descendre les ISO jusqu'à 200 en LOG et que 800 iso c'est mieux c'est des blagues en tout cas pas avec le A6700 A+  

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