I own a Canon Eos 1100D and through research i found out that this camera and others in the entry level DSLR market have a particular effect of making the photo curve or make it bend to seem convex and ruin the effect of the photo. I would like to ask your advice on how I can negate this effect, either through using a different lens or through editing or any other means. I would love to hear your feedback. Thanks
Canon EOS 1100D
18-55mm EF lens.