On the line for the F100, all AF lenses support matrix metering per Rockwell. He includes AF, AF-D, AF-I, AF-S, VR, G, AF-P. Rockwell states, further up the page -
Matrix Metering, introduced in the 1983 FA, is Nikon's magic metering system which gives perfect exposures over many difficult conditions, including pointing directly into the sun. All Nikon's pro cameras have had it since the F4 of 1988, and all digital cameras have it. Only the FA manual focus camera has it, and most of the AF film cameras have it. See my individual camera reviews for details
The F100 only supports matrix metering with lenses with a CPU. That includes all autofocus Nikkors. Have your brother download a copy of the manual from this link. The compatibility matrix is on pages 32 and 33. https://www.bhphotovideo.com/lit_files/42036.pdf
I don't know what "too expensive" means to you, but until recently I occasionally used a Tokina 28-70mm f/2.6~2.8 with my F100. Now I use either use primes or a 24-120mm f/4. The 35-70mm f/2.8D Nikkor and Tamron 28-75mm f/2.8 lenses are also quite affordable. Avoid the newest 24-70mm lenses which use electronic aperture control -- they can only be used wide open on an F100.
I'll second abruzzi's comments on the 28-105 D. It's a nice lens and can easily be used in manual mode. I also own a 70-300 ED D, which can often be picked up for reasonable, and again, like other D lenses, it can be used easily in manual.
The F100 only supports matrix metering with lenses with a CPU. That includes all autofocus Nikkors. Have your brother download a copy of the manual from this link. The compatibility matrix is on pages 32 and 33. https://www.bhphotovideo.com/lit_files/42036.pdf
I don't know what "too expensive" means to you, but until recently I occasionally used a Tokina 28-70mm f/2.6~2.8 with my F100. Now I use either use primes or a 24-120mm f/4. The 35-70mm f/2.8D Nikkor and Tamron 28-75mm f/2.8 lenses are also quite affordable. Avoid the newest 24-70mm lenses which use electronic aperture control -- they can only be used wide open on an F100.
My apologies for not responding sooner. It's been quite a few years since I used one, but sharpness is excellent except at f/2.8, where it drops to merely very good. As for reliability, it's very well built mechanically, but there are quite a few reports of haze developing on the lens elements.