mrkgoo wrote in post #8080315
I was just wondering that I could possibly not get the same FOV of a 135mm on a full frame camera due to the longer MFD compared to an 85mm on a crop.
Not exactly. It's not the distance, it's the magnification - the 135 actually has a .19x factor whereas the 85 has a .13x mag on full frame. On the crop cam, then yes you are using a smaller portion of the frame. A simple 1.6 multiplier of .13 would yield a rough estimate of .20x. Not much of a difference, IMHO.
The real difference comes into play if you put extension tubes on the lenses, in which case the 85 would get more benefit from a 25mm tube, for example.
Honestly, though, this is a lot like worrying about the brand of tires that come on your new car. That is, it's probably not why you would choose one car over another. Outside of the analogy, there are a whole lot of reasons to go full frame and plenty of macro lenses to fit it.
Current: 5DM3, 6D, 8mm fish, 24-105/4IS, 35/2IS, 70-200/2.8IS, 85/1.8, 100-400/IS v1, lensbaby composer with edge 80, 580's and AB800's
Formerly: 80D, 7D, 300D, 5D, 5DM2, 20D, 50D, 1DM2, 17-55IS, 24-70/2.8, 28-135IS, 40/2.8, 50/1.8, 50/1.4, 70-200/4IS, 70-300IS, 70-200/2.8, 100 macro, 400/5.6, tammy 17-50 and 28-75, sigma 50 macro & 100-300