Lens sizes / use / meaning

I currently have the lens EF-S 18-55mm and EF 75-300mm lens for my Canon Rebel T3i. I was graciously endowed with a 40mm lens for Christmas with the option to exchange it for another purpose. We'd like to think that the 40mm is covered by the 18-55mm lens, but I'm not completely sure how it works so any assistance with suggestions, meanings of size and/or what they do greatly would be greatly appreciated! Thank you in advance!

Caroline_7 wrote:

I currently have the lens EF-S 18-55mm and EF 75-300mm lens for my Canon Rebel T3i. I was graciously endowed with a 40mm lens for Christmas with the option to exchange it for another purpose. We'd like to think that the 40mm is covered by the 18-55mm lens, but I'm not completely sure how it works so any assistance with suggestions, meanings of size and/or what they do greatly would be greatly appreciated! Thank you in advance!

Yes, the 18-55mm lens can capture the same field of view as the 40mm lens.  The difference is that the 40mm can do to a greater opening (allows more light in and allows a smaller depth of field for that look "background blur").  It will also produce images sharper than the 18-55.  How much sharper depends on how to use it.

Prime lenses (no zoom) are not for everyone.  You must use your feet instead of zoom in and out.  In addition, they (generally) don't have image stabilizer, which has your 18-55.  The compromise is that they can produce extremely sharp images and allow you to shoot in dim light situations.

I tend to like them, so maybe I'm not the best person to comment on.  But one of the main advantages of the lenses privileged is a very wide opening.  The 40mm "pancake" lens is actually not all that wide at f/2.8.  It's better than your zoom, but not as wide as something like the 50mm 1.8 "nifty fifty".  The main advantage of the pancake lens is just that it is very thin, for those who want a small lens.  Personally I would recommend the 50mm lens on the 40mm, because it has greater openness.  But I have never used the 40mm - there are many people who love him.

Be that as it may, I do not recommend trying a first goal.  As I said, they are not for everyone.  But you won't know until you try.  And what better way to try to donate.

Tags: Canon Camera

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