This is a good flash if you are looking for a flash for a Pentax camera where you need an external flash with optical control or for in-camera use. It works really well and I think it's well made for the price. The only flaw I see in the design is that YONGNUO didn't make this flash capable of high-speed sync. NO HIGH SPEED SYNC guys! It has many other great features such as second-curtain sync, can be triggered from the camera (OPTICAL) by wirelessly triggering the built-in flash or master flash, or in S1/S2 pre-flash prevention mode. . It does not support wireless radio transmission modes or IR or RF triggering. Supports auto and manual scaling, but you need to connect a USB cable and update the firmware for this feature to work properly. If you don't do this, you will be working at a reduced flash distance with the zoom function. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. With the zoom function you work with a reduced flash distance. Although this flash lacks some of the features photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. With the zoom function you work with a reduced flash distance. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. With the zoom function you work with a reduced flash distance. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. With the zoom function you work with a reduced flash distance. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. that you won't get high-speed sync. With the zoom function you work with a reduced flash distance. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync. that you won't get high-speed sync. With the zoom function you work with a reduced flash distance. While this flash lacks some of the features that photographers need, I highly recommend it for beginners who want to work with an off-camera flash and with more power than the standard on-camera flash. It's a good flash for the price, but be aware you won't get high-speed sync.
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