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I have a Canon 70D APS-C sized sensor camera. I currently have a Sigma 10-20mm, a Canon 50mm 1.8, a Canon 75-300mm and of course the kit lens. I want to buy the Canon 24-105mm F4 L as an upgrade.
I am fully aware that on my crop sized sensor it will look more zoomed than on full frame. However I have tested my camera at the cropped 24mm on my sensor and I dont find the focal length to be an issue. My only concern is that I heard from a couple of places that using a full frame lens like the 24-105 L will reduce the megapixels or the quality in some way. I was wondering if this was true and how/why it happens.
Also I will be using this lens for video, getting the cinematic shots mainly at 70mm + at F4 to get the best bokeh I can out of the zoom. I don't want advice on alternative lenses or comments on how this lens will be too 'long' as I have got a 10-20mm wide for the wide end, and I want thislens for cinematic zoomed video look.But I just want to make sure the lens on a crop size camera will not affect the quality in a bad way.