If you live within range of one of the stores here www.cameraworld.co.uk pop in and chat with them. Prices are usually around the Amazon mark but might be worth it for the advice.
The focal length is a property of the lens and nothing to do with the body, so the 50mm figure is directly comparable with the values of your other lenses. This lens has a fixed zoom level close to the max zoom on your 18-55. This means it can be tricky to frame shots indoors as you need to stand back a bit more. However, forcing you to stand back flattens facial features and leads to some truly beautiful portraits. The large aperture and shallow depth of field help in this regard too. This lens lets you take the photo you imagined. Crop factor is only important if you want to know what focal length would give you the same field of view on a 35mm camera... Useful if you have experience with several cameras, but a somewhat random complication otherwise!
And I remember when my grandad used to give me Werthers Originals...
If only you could go into a camera shop and ask... shame they've all closed down due to online shopping
My other half will not support yet another purchase of camera gear but you really are making me consider it.... I could always use the excuse that I’ll sell my old one but then again would I actually get round to it, probably not. If something from TopCashback comes through soon enough then I guess I will justify it to myself.