Architect1776 Loc: In my mind

From your list I would say you should know about lenses and make that decision.
But you ask for a lens then I would take the 24-70. Too bad you don't have the 24-105 as it would have been far more versatile as a one lens kit.

jerryc41 Loc: Catskill Mts of NY

I'm afraid you have to buy another lens.

When I travel, I prefer to bring a compact that will fit into my pocket. If I were bringing a DSLR, I would put my 28-300mm on it. The 70-200mm is larger and heavier than I would like for a trip. Of the ones you list, I would take the 17-40mm

dcampbell52 Loc: Clearwater Fl

LOL! Take all of them because invariably the one you "really need" will be the one you left at home. Really, I would take the 70-200 (the better or the 2 so I don't know if that is the faster 2.8 or the f/4 but which ever has the better optics or if they are about the same go for the faster f/stop. You probably wont need the fisheye but I would take the 50mm and a wide-mid (Probably the Tamron 24-70). That should cover most of your needs. Just remember that photo equipment in Hawaii is going to cost a premium because they rely on vacationers that get there then want to "record" the trip.

dcampbell52 Loc: Clearwater Fl

LOL! Take all of them because invariably the one you "really need" will be the one you left at home. Really, I would take the 70-200 (the better or the 2 so I don't know if that is the faster 2.8 or the f/4 but which ever has the better optics or if they are about the same go for the faster f/stop. You probably wont need the fisheye but I would take the 50mm and a wide-mid (Probably the Tamron 24-70). That should cover most of your needs. Just remember that photo equipment in Hawaii is going to cost a premium because they rely on vacationers that get there then want to "record" the trip. So, do your best to take what you need. I would probably invest in a removable drive (if you have and are taking a laptop to upload your images to). I have a 4tb external drive that I upload to and then I also upload my images to my WD Cloud drive which is in my office across the internet. It gets me a backup of my images that are safely back home. I DONT delete images from my external drive until I'm sure I've got them safely backed up at home though. So, I have the camera gear, the laptop an external 4tb drive and multiple memory cards for the cameras. Good luck and enjoy your vacation. NOTE: If you get the chance and are so inclined, be sure to visit the Pearl Harbor Museum and take the boat ride to the Arizona Memorial. (You get there "I think" through the main Navy gate. But take the Navy tour rather than the 3rd party tours. It is worth the time (not to mention all of the other ships on display around the museum and memorial).

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

My son lives there and I have visited many times. I take a wide zoom, Nikon 10-20 cause the landscapes and shore lines are so beautiful. I also that my Sony RX100 II cause it has a nice zoom range and I can carry it in my pocket. And I take my trusty 200-500 for the beach beauties ( including of course my daughter in law) and surfers.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

lamiaceae Loc: San Luis Obispo County, CA

I have never been there but friends have. Aside from the usual tourist fare, Hawaii has many small and medium waterfalls and flowers to photograph, and birds different from the other 49 states. I'd find it next to impossible to limit myself to one lens on any important shoot. I only use a walk around for causal shooting. Also remember much of Hawaii is rain forest and not open grass lands, chaparral, etc. and you might need a faster lens for moving animals. Not knowing your format, I'd personally take three of 70-200 f/2.8, 24-70 f/2.8, 100mm macro f/2.8, a fast normal (50mm f/1.2 or 35mm f/1.4) depending on FX vs DX (FF vs CF) format. But that is me, I shoot flowers and landscapes 80% of the time. But hey, the 15mm fisheye could be good for volcano terrain. You have some nice and usable lenses there. If you are going with someone else have them carry some of the gear (on the plane and while walking). Enjoy!

MtnMan Loc: ID

Can't imagine why you'd need the added size and weight of an f2.8 anything. Most shots should be outdoor Landscapes at f16 and higher.

Yes to the CP.

Notorious T.O.D. Loc: Harrisburg, North Carolina

If you are only taking one I would go with the 24-70. If taking two I would add the 70-200.

Best,
Todd Ferguson
Harrisburg, NC

camerapapi Loc: Miami, Fl.

You will get many opinions so it could be confusing. If I had what you do I would take the full frame and only two lenses, the 24-70 and the 70-200 f4 or f2.8 depending on your preference. I do not understand why two 70-200 lenses.
When I visited Hawaii years ago I was using film. My tripod and a 28-105 f3.5-4.5 D was practically all I needed for the trip.
In full agreement with others that you should take a polarizer filter.

Lagoonguy Loc: New Smyrna Beach, FL

I would take the 17-40 f/4 & 70-200 f/4. I've enjoyed visiting Hawaii every year since 1991 and I spend a lot of time hiking and shooting landscapes so the wide angle works great for that, the sunsets are perfect for it. Most likely you will want to zoom in for waterfalls, distant beaches, surfers, birds, whales and monk seals etc. and some close shots of the green flash at sunsets so the 70-200 f/4 would be great for that and some great flower photos as well. You will have plenty of light except at dawn & dusk, likely you will be shooting landscapes at those times, plus the f/4 is lighter than the 70-200 f2.8 to cart around. That said, a good pocket or belt camera is very handy and will serve you well for evening dinner shots and when you just don't won't to take your gear with you. I also agree a 24-105 f/4 or 28-300 type of lens would be a good one lens solution. For years I just used a Nikon 18-200 and even still I like the 18-300 f/3.5-5.6 for a one lens solution. Please be very cautious about leaving any of your camera gear anywhere in your car, including the trunk, it is too common to have items stolen from rental cars in Hawaii. Hawaii is very safe but the auto burglary is a fact of life in the tourist spots. Use the room safe for any gear you don't with you when you are out. Take a CPL also. I hope you have a wonderful time and enjoy your photo memories but occasionally do put that camera down and just look and smile. Aloha

mr spock Loc: Fairfield CT

I have what may be a silly question. If somone owns 9 lenses how often do you actually get to use all?
For example under what circumstances would you use a 70-200 F4 as opposed to a 70-200 F2.8?
As one one relatively new to photography I'm curious to know if owning a half a dozen lenses or more is what i can look forward to.
If so I need to start saving now. :>))

burkphoto Loc: High Point, NC

At one point, I had eight. Two were zooms, a 36-72, and an 80-200. The rest were primes. I used the primes 80% of the time, because they were sharp Nikkors (24, 35, 55, 85, 105, 135).

Most zooms sucked in the 1980s. They're really good now. So now, I have two zooms and one of them is used 80% of the time. I need to add a short macro for copy work, soon, but will rent other fast primes rather than own them.

You can use only one lens per body. It makes sense to carry two bodies with different lenses, so you need not change lenses often in the field. Other than that, why carry a locker full of lenses around?

terry44 Loc: Tuolumne County California, Maui Hawaii

From someone who lived on Maui take as little as you can so you can enjoy the experience. an all around lens like 18-300 covers it all and you wont have to lug around the weight. With what you have you will want wide angle like the 17-40mm the 24-70mm, and the 70-200mm f4 definitely use a polarizer as the sun is brutal.

Tiger1123 Loc: Hawaii

You really should consider at least a 300mm or at best a 400mm, for the Large Wave Surfing pictures of the North Shore and Waimea.