What does acting mean for Lee Joon, who has completely transitioned from being an idol to being an actor? 

When asked what changed after he decided to only do acting, Lee Joon replied, "I have always worked hard. Comparing when I was doing both in the past and when just doing acting now, I cannot say that I am putting in more effort now. I worked hard then, and I am working hard now. I am the same . . . My first speciality was dance. I've done Korean dance, ballet, and I was a singer. However, out of all the different areas, acting is the most interesting. I think I will have the most fun with this," explaining why he chose to be an actor instead of a singer. 

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Lee Joon also stated, "Nowadays, there's not as much prejudice against idols who act, right? Idol-actors aren't necessarily bad at acting. After School's Nana gets good reviews, and she was an idol for a long time. Siwan is a singer, but he is also doing great as an actor, so I think the fact that starting off as an idol and your acting ability have nothing to do with each other." 

So what does he think is a pro of being an idol/actor? Lee Joon answered, "To be honest --and I think everyone will agree --if you are an idol, it is easier to get casted." He then added, "But strangely, I used to not get cast all that much," laughing.