ericz34 wrote in post #18430525
So this question comes up because I'm not sure where to go with getting a new camera. I really want to get more into Astrophotography, but I mainly do landscapes AND would like to venture into video. I currently have a t6i, I know the 6D is great at everything i need except video and the 80D is more of a general purpose camera geared more for video. I'm not sure the 80D would be much better at high ISO than my t6i. Would it be smarter to keep the t6i, and buy a 6D with a rokinon 14 f2.8 and use my t6i for video? Or sell the t6i for an 80D with the rokinon 16 f2... and Have the jack of all trades master of none?..
Really depends on how dedicated you want to be to any one thing.
Your T6i is already good for everything you want to do. You will not see some magical improvement really moving to the 6D nor the 80D. You will see them doing better, slightly, in some regards, but overall it's not a major change. You would be far, far, better served by changing how you're approaching astro, landscape, and video, rather than just thinking the camera is the fulcrum of these things. You have a capable sensor already. So the 6D will have a cleaner ISO 12,800 with long exposure than all of these, by a little bit. The 80D will be slightly better at top ISO than the T6i, but again, only by a little bit. Not even a full stop. So really if you're interested in astro, I would argue that spending $800+ on a camera just to gain less than 1 stop of ISO performance is not worth it at all, and instead, if you want to get into astro you should explore an inexpensive $350 tracker that allows you to expose for longer periods of time (2~4 minutes!) with any lens you wish (you are not bound to having to have really fast focal-ratios, so also saves you money there too). So then there's the idea of landscape, well, again, your sensor is already doing quite well. You might gain maybe close to 1 stop (probably less than 1 stop though) of DR and shadow recovery with a newer sensor, but that's not going to make a big difference; technique and processing will do more for your landscape than a slightly newer sensor. So then there's video, now that is hard set and requires the body. So there you have to consider, what is important about video for you? The T6i does basic video, so if you're just dabbling with video it's fine. But if you're looking for something with video that does AF then you'll want something with DPAF, but if you're not having to have active AF (which is not even that fast honestly) then you may not need that. Depends how deep into video you're looking to go.