bought the Canon 50mm f/1.4 and sold my Canon 50mm f/1.8. The 1.4 is superior to the 1.8 in all respects. It looks more valuable and stable, the autofocus is faster and I would also describe the image performance as a bit better (although the f/1.8 is already very good here). I use the 1.4 on my Canon 5D MKII and am very satisfied. I've also been filming with my DSLR for a while now. The 50mm 1.4 is predestined for this. The blurred effect of a large aperture works particularly well in films (see video). Filming at portrait distance looks amazing. There is an exciting effect when you film people like this. Even in dark environments, the lens still lets enough light through when filming (due to the large aperture). - Ideal travel size and weight - Hardly any weight on the DSLR - In dark scenes, it still creates good pictures where other lenses have long since only delivered rejects - Faster and quieter autofocus - No stabilizer; In my opinion, you don't need it for photography either. It would be helpful when filming - super lens for DSLR filming (although the films usually have to be stabilized later with suitable means if you don't film on a tripod right away) Note: many people are surprised when they take photos with an aperture of 1.4 and then get annoyed about the lack of sharpness. Due to the design and the laws of optics, that's the way it is. You should know that. But of course the lens is also very good if you stop down a bit and then work with f/2.8. More expensive L lenses are certainly better in terms of sharpness, even at f/1.4. But in between there are no worlds but a lot of money. *** Conclusion *** A must-have lens in my collection. Great for both photography and filming. Clear purchase recommendation.