Hey guys and gals! I was just wondering, my family is going on a vacation this summer to London, Paris and Venice. I would for sure bring my Canon 5D Mark II, but don't know what/how many lenses to bring. Seeing all the places are perfect photography spots. Should I carry around more than 1 lens? Also, I have currently, Canon EF 17-40mm f/4L USM, Canon EF 35mm f/1.4 L USM, Canon EF 24-105mm f/4 L IS USM and lastly Canon EF 70-200mm f/2.8 L IS USM. Which ones should I bring
Also, I saw the 8-15mm fisheye and quite liked it. Are there any owners here who would like to share their experiances with it? Would it be good to use on the trip? Thanks! 
Ryan
take everything.
17-40 you need for buildings and indoors. Where you are going is full of it.
35 f/1.4 is an amazing lens. Low light at night and also streeting.
24-105 I prefer the 24-70, but most of your shots will come from this one
70-200. it is possible to leave this one at home, because when you are out there, it is quite cumbersome to carry it. You will fine that it is not versatile enough to be the main lens. It is useful for landscaping compression and also some street shots of people. Picking out detals of places, buildings. You will definitely need it. Depends if you are prepared to carry it in your bag and is willing to change lens when you are around.
I went travelling with my kit. that is, 16-35II, 24-70, 70-200 IS + 50 1.4. I only shot the 70-200 on the few days when I really needed to shoot with it and had it on my camera all the time. Othertimes when I had it in my bag, I didnt botheer shooting wiht it because I found it was too much effort to change lens, shoot 3 photos and change it back to primary lens.
In the end, lens dont matter. you just shoot with you have. If you have a 50 1.4 you will shoot with that. So ddont worry about the lens too much. Too much fantasising. We all do it. You will find reality when you are shooting on the field. You make do with what ever you have.
good luck.