It is a tough call between the DFA 28-105mm and the DFA 24-70mm for an all-around travel lens, depending on what factors are most important. Since you state you want it good for indoors, so wide is important- that also implies lower lighting, so having that constant aperture of f/2.8 seems like an important factor too, and the DFA 24-70mm does go significantly wider. It also has enough reach for portraits, and the f/2.8 is better for that also. If you ever should do some shooting of indoor sports where you are fairly close to the action, you might find it indispensable, as I do with my Sigma 24-60mm f/2.8 EX DG, which is a favorite of mine for numerous uses.
The minus aspects are its size, weight, and cost. With the hood on, nearly 2 lbs. vs about 1 lb. for the 28-105mm, and about 1" longer, with a filter thread size of 82mm vs. 62mm. But, as always, this is to be expect when going for a pro-level zoom lens having a constant f/2.8 aperture because there is a need for what it offers.
Right now, I see B&H has a sale going on at $200 off of the regular price of the DFA 24-70mm f/2.8, bringing it down to about $97 over the $1,000 mark you are aiming for, with free shipping. ---------- Post added 07-26-17 at 06:54 PM ---------- To augment what I've already said, the DFA 28-105mm f/3.5-5.6 will probably perform as f/3.5-4.5 just up to about 50mm. That is, it will hover around 1 stop less aperture than the DFA 24-70mm f/2.8, after which there will be a 2-stop difference out to 70mm. I say this because with my DA 18-135mm f/3.5-5.6, it is good for f/3.5-4.5 out to 70mm, after which the shift to f/5.6 takes place- but it can go out as far as 70mm only because its full range is to 135mm, not 105mm. Also, the 24mm wide end is still very useful for APS-C as well compared to 28mm, which provides no wide angle at all.
The DFA 24-70mm f/2.8 has received an excellent review by ephotozine testing. As to adding the weight, what I do is use a camera/lens holster of a larger size that will accommodate the depth when he lens is mounted. I go cross-shoulders with the case strap, and also use the belt loop to prevent swinging. For a longer tele range, such as the DFA 70-200mm f/2.8, for me that would get to be a bit much if I am doing a lot of trekking, so I simply go the APS-C route for that with my DA* 50-135mm f/2.8 instead.
Last edited by mikesbike; 07-26-2017 at 07:00 PM.
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