Hello - My first post here. I have just upgraded to an R5 and various lenses, including the RF24-240mm and the EF-S 17-55mm (plus adapter). I have compared the widest field of view with each lens on the R5 and I'm finding that the 17mm zoom out is actually giving me a narrower field than the 24mm zoom out on the 24-240mm lens! Is this because I am using the adapter with it? I am still able to return the 17-55mm for a refund so am keen to know if my assumption is correct. Thanks.
Hello Ian and welcome to the forum. The 17-55 is a aps-c lens. So when you attach this lens to your R5, the camera will default to this mode. This being a crop mode, 17mm is something like 27ish mm in full frame terms. So it's not the adapter, it's the crop lens that you are using. Gary
Gary - what a helpful first response - many thanks. Is there a way to over-ride that default to use the full range of the lens?
Ah, that makes sense, thanks. I have returned the EF-S lens and adapter for a refund. However, I have also noticed that my RF 24-240mm lens shows a black vignette at the edges when set at 24mm. Given that this is a lens designed for the R series, do you know why this happens?
Vignetting is caused because when you pass light through the lens the light falls off as you get away from the center. Some lenses will exhibit this worse than others, commonly you will get a stop or two of light fall that can start to be noticeable, you are most likely to see this wide angles and wide open apertures. Any under exposure will definitely make the corners look worse very fast. I don't have the 24-240 but I am not surprised, that is a very long zoom to have such a wide angle on one end. I am sure they have profiles in lightroom to remove most of that in post production.
Many thanks. I am familiar with the concept of vignetting, but this looks more like the edge of the lens structure is actually impinging on the shot - see example attached. I don't expect to pay thousands of pounds for a camera and lenses only to have to use software to use the lenses properly! I'd be very grateful if you could let me know your thoughts on the shot I've attached.
That is definitely lens barrel. I would have asked if you had a filter screwed on but having done a little searching online it seems that many people have reported the same thing. So I guess the lens is not defective, but you can call canon and complain just to be sure. I would not be happy with a lens that expensive doing that either.
I'm glad you've confirmed my view. I have e-mailed Canon for their thoughts. I imagine they will say I should set the camera to a setting other than full frame, but that is not acceptable. I expect lenses specifically designed for my camera to have full functionality. I'm very grateful for your responses.
As a follow-up, I've checked the cropping modes and all except the x1.6 mode give the same barrel-visible result. Unless I'm doing something wrong (quite possible!), this is appalling.
