What Is TTL Flash? As you first navigate flash photography, you’ll hear TTL a lot. But what is flash TTL, anyway? TTL stands for “through the lens.” Consider this flash mode the equivalent of that automatic mode on your mirrorless or digital camera. In contrast, a strobe without TTL...
Check this out. TTL basically means your flash is gonna fire that pre-flash which is gonna take a measurement of the light reading, and then it’s gonna expose for you. In Photography 101, we talked about using the automated modes when you’re getting started, and that’s great. The a...
So what we casually call TTL flash (Through The Lens metering) might correctly refer to film TTL, but is probably instead iTTL today. And in iTTL, it is possibly TTL regular flash mode, but most often is TTL BL balanced mode. We sort of have to know what we are talking about. 😊 ...
and with far lower propagation delay, than TTL gate designs. ECL gates demonstrate a typical propagation delay of 1 to 2 ns compared with about 10 ns for a standard TTL gate. ECL fan-out is also much higher at about 25 gate loads compared with a TTL fan-out of about 10...
IP数据报头部 time to live (TTL) 域的值每经过一个路由器就减1,如果封包的TTL变为0,或者路由器由于网络拥堵等原因封包队列满了,那么这个包会被路由器丢弃。 上面的发送和接受过程在 TCP 连接期间会发生很多次: 客户端选择一个初始序列号(ISN),将设置了 SYN 位的封包发送给服务器端,表明自己要建立连接并...
What is time-to-live (TTL)? Time-to-live (TTL) is a value for the period of time that apacket, or data, should exist on a computer or network before being discarded. The meaning of TTL, or packet lifetime, depends on the context. For example, TTL is a value in an Internet Prot...
LGTB LGTBH LGTC LGTF LGTG LGTH LGTHCOLM LGTI LGTM LGTO LGTOW LGTP LGTPS LGTR LGTS LGTT LGTTL LGTU LGTWO LGU LGUDA LGUG LGUGC LGUR LGUSD LGUSL LGUTEF LGV LGVA LGVH LGVHD LGVHR LGVL LGVMA LGVSD LGVSDNMB LGVW LGW ▼...
1/500, and more expensive units can push out t/0.5 1/1000, but that is still too low. In order to freeze motion with flash, you need to go down. On a 1-10 scale, the magic will happen between 5 and 7.5. This is typically where there is enough power, but the duration is ...
1 What is a TTL signal? Discrete inputs are normally output from a relay or transducer at TTL (transistor to transistor logic) levels, which are based on a 5V pull-up. In theory, the perfect TTL on/off signal would be 0V representing OFF (meaning a digital value of 0), and 5V ...
Android4.0上的浏览器，在打开的网页上点按两次，表示关闭该网页（）