chaturanga wrote in post #17643895
Hello everyone,
I am new at photography, I have EOS 500D (Rebel T1i) + Canon 18-55 Kit Lens (Not IS), I am looking for a zoom lens and a macro. For zoom lens I am up to buy Canon 55-250 STM lens. But for Macro shots I don't have any clue, just because I don't know the main concept of macro lenses. I was thinking that a macro lens should be a zoom lens capable of shooting from short distances to the target, but there are so much different focal range of macros, even some super zoom lenses labeled as macro! So which macro can you suggest to me? (I don't have so much money for an expensive thing, I am looking for most 300-350 USD.
And can you explain the main concept of macro lenses a bit?
Just for clarification - you say you want a zoom lens. A zoom lens is a lens that changes focal length. Your 18-55mm is a zoom lens. The focal length varies from 18mm to 55mm. When you say you are looking for a zoom lens, you probably mean a telephoto lens, AKA tele zoom. The Canon 55-250mm STM is an excellent tele zoom.
It isn't 100% clear - do you want a tele zoom lens that is also a macro lens? Or do you want a tele zoom lens AND a macro lens?
The word "macro" means different things to different people. It has an exact meaning, and racketman provided that, but nobody pays any attention to the official meaning. So when you say "macro", please let us know what exactly you would like to do with it. How close do you want to get?
If you want to do extreme closeups of a fly like racketman's example, then you want a true macro lens, and for that, you should think a lens that does not change focal length. That is, a lens that is not a zoom lens. As racketman said, zoom lenses are not (usually) capable of real close photography.
Real macro lenses are great to have, they are all very sharp, and are usually expensive. So before you get into "macro", clarify your needs.
Now I want to give you an example of a zoom lens that can get really close and get pics like that fly. My example is actually a combo of two lenses put together. I am referring to the 55-250mm STM that you mentioned, with a Canon 500D closeup lens screwed into the front. (Same name as your camera, but an entirely different thing.) At the long end (lens set to 250mm), this combo will get you around 0.7x, by which I mean the image on your sensor will be 0.7x the size of the actual subject. If you are shooting a grasshopper that is 25 mm long, the grasshopper's image on the sensor of your T1i will be 17.5 mm, which pretty much fills your frame, because the sensor is about 22mm wide.
If you want to get still closer, like 1x instead of just 0.7x, then you can crop the pic a bit. But if you want native 1x capability, the mentioned combo is not quite up to it. The better ways to achieve this include using Raynox "filters" (actually closeup lenses), or extension tubes, or both. Or buy a macro lens.
One final thought - good macro photography is 10% lens and 90% lighting. Don't imagine that you can buy a macro lens, take some macro shots on the way home, and have results like racketman's example. You need to spend some time learning about lighting macro subjects.