The Nikon D7100 is a great camera, even though it's running about 6 years old now. It's still probably one of the better crop sensor cameras available on the market, even to this day, and especially at the current price point. However, one of its limitations has always been with the guards to aperture control while in live view when recording video. It's pretty much been discussed among message boards and on YouTube now, you're kind of out of luck with that. However, I discovered that live view recording and aperture controls were available when paired with the Tamron G2 Series lenses, more specifically the Tamron DI VC USDG2 lenses. These lenses when mounted on the Nikon D7100 provide complete aperture control while in live view mode while recording video. So I just wanted to demonstrate this to show that this actually does work. I've set up a D7100 here and put it in live view recording mode. Notice how I can adjust the F-Stop in live view? This obviously has something to do with the lenses themselves because this was always one of the things that this camera was never supposed to be able to do. This is pretty cool now as it opens up the ability to change the aperture on the fly for those that have mothballed there's D7100 as a result of figuring they couldn't use it for video if they required that option. However paired with the Tamron G2 Series lenses, this provides you with complete control over the aperture while in live view when recording video. This was something I discovered quite unexpectedly and happened by chance. These lenses also provide vibration control which is an added bonus, especially when doing video in low light situations. I have both the 2470mm and the 7200mm Tamron G2s and I absolutely love them. A special thanks goes to Ken Wheeler, the angry photographer for recommending the Tamron G2 Series lenses to all subscribers. Anyway, I hope this information brings new life to the Nikon D7100 for video production when paired with the Tamron G2 Series lenses. For those people that tucked their D7100s up in the shelf somewhere because the lack of the ability to provide aperture control in live view and did suffice their needs. I think it's a fantastic camera, I absolutely love it, I have two of them and for all the reasons stated in all the other reviews about this camera in the past is still one of the better semi-professional crops sensor cameras on the market today and now even more with video when paired with Tamron G2 Series lenses. Thanks.