Selecting between Canon EF-S17-55 f2.8 or Canon EF 24-105 f4 L with T3i body

[Kashifr]

Hello,

I am debating between Canon EF-S17-55 f2.8 or Canon EF 24-105 f4 L with T3i body.

I have 18-55, 55-250 and 50 f1.8.I mostly shoot while traveling and this time I want to level up and take some more attractive and sharp pictures and also like to carry less lens. I like to do portraits with blur and all in focus. I shoot landscapes, cities, and nature, indoor and outdoor. I am debating between Canon EF-S17-55 f2.8 or Canon EF 24-105 f4. I am mostly leaning towards Canon Canon EF 24-105 f4 L but wondering if I can shoot portraits with or without a blurred background. Sometimes I like all in focus as to capture nice background and popular background.

My other question is about crop factor. I understand that my camera has 1.6 cf. I experimented with my 18-55 on 24 and 36 mm and figured out that I only have to move only a few feet back to get a 24mm, please correct me if I am wrong.

Lastly I am wondering why Canon EF 24-105 f4 is so expensive when it has only f4 and can I change the aperture to 5.6 and higher.

Canon 15-85 f3.5-5.6 got my attention, but feel two on the top is better.

Thank you for your time.

Thank you

[LeeP]

I have owned the EF 24-105 f4 L for an inordinately long time and it is my only EF lens that has not been replaced by an equivalent RF. I will have to admit that my attachment to it may be more sentimental than objective, but it is a tremendously versatile lens. When I passed my DSLRs to a friend who wanted to take his first steps in photography, I grabbed a duplicate for cheap for him on Ebay. Knock on wood; mine is operating flawlessly, but if it stops, I will now know why because of you. Thanks.

[deebatman316]

I was talking about the 15-85mm not the 24-105mm. I don’t know if that lens had a flex cable issue like the old 24-70mm F/2.8 lens.

[LeeP]

Love the graphic. It's a keeper!

[deebatman316]

I did not make it but I found it on Google.