Advice on lens for holiday

[hk3948]

Hey people. Heading to sri lanka in september. Likely to be a mix of beaches, wildlife and temples. I have a 6d. Looking to get a telephoto for the trip. Looking at the following l series lenses. What are peoples thoughts?

28-300mm
70-300mm
100-400mm

And oddly the 70-200mm purely based on IQ

Will probably initially hire before taking the plunge. What are peoples thoughts or recommendations for best for this trip with regards to focal range but also importantly IQ?

Thanks guys
look forward to your advice

 

[hk3948]

So at the moment have a 6d with 17-40 and 24-105. Clearly im not covered for the longer end. Sri lanka is in part famous for its national parks that contain plenty of wildlife lile elephants, leopards and bird life. Im really keen to get some beautiful wildlife shots which I think im gping to struggle to do with my current 24-105.
Im aware of the drawbacks of having large focal ranges, plus those lenses dont have a fixed aperture. Was just wondering what people's experiences of them were and generally what they might recommend for the kind of shots I'm after. Think I have the rest of the holiday covered

 

[hk3948]

Cheers for all your suggestions guys. Thinking maybe the 17-40 plus 70-300 for a couple of reasons. Firstly, from reading around it seems the 70-300 is better optically than the 100-400 with better IS which you'd need with that variable aperture. Its also significantly lighter and smaller and wouldn't leave as much of a chasm in the focal range as id have if i only had the 17-40 and 100-400.
It also still offers 3 times the zoom range that my 24-105 does so should be plenty although might lack a little for those tight birdy shots.