My copy is 5 years old - there is not a speck of dust and I shot it in the rain, everything is fine. I recently switched from 60D to 6D and the problem with aperture ratio has practically disappeared (FF is FF). If a responsible frame, make sure and shoot in the RAF in parallel. There is also fifty dollars 1,4, but you wonβt achieve ringing sharpness from it, as from 24-105 even in manual mode and in RAF, you can tighten up the color rendition no worse than fifty dollars, so 95% use it (5% portraits still have fifty dollars) . Very successful glass, as a travel reporter, perhaps there is no alternative, it will fit into a carcass in a small bag. Itβs better to carry it in a bag, the trunk will leave on the shoulder with a belt, the view is not very good, and the lens will last longer. In general, if the photo is not a business, then you can have this lens alone. But it is also good for video, it has been checked more than once, you will have to manually align the zoom and sharpness, but quickly get used to it. I advise everyone, I was advised by his pros and Iβm glad that I listened to their advice and even the not the most powerful 430 flash indoors can easily make up for the weak aperture for crop, but for FF you wonβt always need a flash, for example, 6D 6000-10000 ISO "workers" without noise at all! So if you think what to take - take it without a doubt good both on crop and on FF. Please check before you buy! And look, do not confuse it with the whale EF 24-105mm f / 3.5-5.6 IS STM - this is not an elka, if you need a good proven whale, especially for crop, take better 17-85 !
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