Canon 28mm f/1.8 USM vs Canon 18-55mm f/3.5-5.6 !!!

Started Nov 27, 2014 | Questions thread
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light house New Member • Posts: 4
Canon 28mm f/1.8 USM vs Canon 18-55mm f/3.5-5.6 !!!

Hi everyone!

I've had the Canon EOS 1100D for a while and have been using the Canon EF-S 18-55mm lens that came with it. I wasn't happy with the performance and image quality. I was fed up with having to go up to higher ISO settings to achieve desired exposure when taking photos indoor. So I decided to upgrade to a faster lens. I recently bought the Canon EF 28mm f1.8 USM and started taking test photos right away and comparing them with my previous lens, but the results are very disappointing.

My question is, isn't a faster lens supposed to achieve the same exposure using faster speed shutter while other settings are unchanged? Why is my fast prime lens performing no better than my previous 18-55 and sometimes even worse, when comparing the images taken with same settings?!

Even the sharpness of the images doesn't improve at all using the new lens!

here are some samples I took. all taken indoor and photos are cropped:

compare exposure and sharpness

compare exposure and sharpness

auto focus is no good. background noise is less with the 18-55

auto-focused on the left eye

notice chromatic aberration

I also took photos outdoor using different aperture values. They are no better than the ones taken with the 18-55 either. What could be wrong? any advice?

Thanks in advance

This question has not been answered yet.
Canon EF 28mm f/1.8 USM Canon EF-S 18-55mm f/3.5-5.6 II Canon EOS 1100D (EOS Rebel T3 / EOS Kiss X50)
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