Quote Originally Posted by DJ 86 View Post
i have a small doubt. Why do everyone prefer big aperture in wide angle lens? i know, that big apertures give more light. but then in that case, we mostly click the landscapes at 8 or higher value aperture for more span in focus.
if we use bigger aperture in wide lens, we have very less span in focus. so how does a big aperture in wide lens help?
i am planning for a t3i and interested in a wide lens. i would like to know, if i can replace the kit lens with a wide lens? as i already have a kit lens in my family which i can share. so i dont want to repeat the kit lens and get another good option.
please suggest.
One thing I found is just because your lens will shoot at F/1.4 it doesn’t mean you should be shooting at F/1.4. Close range even with a wide lens it can be hard to hit the exact sweet spot (thinking back about one of our past members who loved his 35mm F/1.4 at just F/1.4). Although it made for interesting cork pictures (arguably).

You want the wide aperture for low light, like indoor settings where you have no flash. You fight a battle to keep your ISO low, your shutter speed fast enough to avoid camera shake and your F# to give you the minimum setting you need so you can get a sharp un shaken picture.

Another use is to blur the surrounding background. Even in good light you use a low F# to isolate a subject in a crowd with a narrow depth of field. While a wide lens isn’t usually known for its bokeh, it can produce at a wide enough aperture.

While Canon’s 35mm and 24mm F/1.4’s can produce very nice pictures. Wide open the IQ falls off quite a bit. Around F/2.8 there IQ is quite acceptable.

If you are shooting landscapes off a tripod a wide aperture lens is less of a requirement.