Night Contact Lenses

I’ve got digit Canon Zoom Lenses (EF 75-300mm 1:4-5.6 threesome and EF 28-80mm 1:3.5-5.6, bought most 10 eld ago) and was wondering whether I could ingest them with a Canon EOS 40D… Does anyone undergo more?

I undergo EF-S lenses are fashioned for destined Canon cameras (XT up to 40D), but what is the plus of them? I was originally prefabricated to see that the EF-S lenses took into statement the 1.6x pasture bourgeois so that the EF-S 17mm-85mm was indeed effectively a 17mm-85mm equal and not effectively 27mm-136mm. The more I read, the more I’m first to see that this is not the case. If this is not the case, then ground would I poverty an EF-S lense as anti to the more widely harmonious EF lenses?

I hit an Canon EOS 35mm camera. If I were to acquire a newborn Canon Digital SLR, crapper I ingest the aforementioned lenses I already have?

I purchased a Canon EOS 300V SLR flick camera terminal year. Along with it I also purchased digit sets of lenses both of the EF type. I today desire to acquire a Digital SLR camera. Question is whether the flick lenses are harmonious with the Digital camera?