I'm currently on the hunt for a new prime lens to use mainly for portraits. It will replace my Nikkor 35/1,8 and be a complement to a 28-75/2,8 and a 70-200/2,8. The 35/1,8 I find too wide for portraits, plus I barely use it since switching to FX since it's a DX lens. I'm using a Nikon D600. After doing some research I have basically narrowed it down to these, but I'm open for any suggestions: - Sigma 50/1,4 ART - Nikon 135/2 DC - Nikon 105/2 DC - Nikon 85/1,8 - Nikon 85/1,4 - Sigma 85/1,4 Of course I've heard amazing things about the Sigma 50/1,4 ART - but I have a feeling that 50mm might again be too wide for portraits? I wish there was an 85mm ART already... The 135/2 and 105/2 both sound amazing but I'd have to buy them used because of the price tag, which isn't really a problem - I just struggle to find them for sale very often. I'd love to hear any opinions on these two in particular, since their prices are still kind of up there even when looking to buy used. Is the Nikon 85/1,4 worth the extra $$$ compared to the 85/1,8? I've heard mixed reviews on this. The Sigma 85/1,4 looks like a great option to the Nikon version but again, I'd have to buy used and I don't often find them for sale here. Any thoughts or recommendations would be greatly appreciated. Thanks!