DTran

Since I've been looking to buy my first digital camera and I have a good number of Nikon F mount lenses to use I have a question regarding the use of Nikon lenses on the Sony A7 and A9 cameras.
I have lenses that are AI, AF-D and AF-S lenses. Is there any adapter that would allow for AF on the AF-D and or AF-S lenses? For manual focusing the Nikon would have the lens always at maximum aperture and automatically stops it down to the set aperture during the actual exposure. With an adapter would the Sony do that or I have to stop the lens down before taking the picture or can I leave the lens at set aperture all the time including while focusing? With the G lens how can I control the aperture? What kind of exposure mode is possible with an adapter? M, A, S, P? My local store doesn't have any adapter that I can try.
Thanks for any information you can give. I know I can ask Mr. Google but may be it's faster asking here?
PS: I am content to get a Nikon digital SLR but I have suggestions to consider the Sony.

PixelStan77 Loc: Vermont/Chicago

https://www.bhphotovideo.com/c/product/995402-REG/fotodiox_nk_sn_g_adapter_for_nikon_f.html

This manual adapter does not maintain automatic lens control between the camera and lens; aperture priority or manual shooting modes should be used, as well as stop-down metering for exposure control.

DTran

Oh I am sorry that adapter is for the Sony A mount and I don't think it will work on the A7 or A9.

mas24 Loc: Southern CA

Try Metabones T-Adapter, Nikon F Mount to Sony E Mount. Available at Adorama Photo Shop for $100. I don't know if all Nikon Vintage lenses will work. Call Adorama and get more info. Good luck.

CHG_CANON Loc: the Windy City

Why adapt lenses to another mount? They'll never be as good as the manufacturer's camera bodies. For the price of a Sony A9, you could have Nikon's newest and greatest body, a D850.

Wingpilot Loc: Wasilla. Ak

I agree, and actually, the D850 is a lot less expensive than the A9, and you won’t need to use an adapter for your other Nikon lenses. Unless you absolutely have to have a Sony camera, IMO, the Nikon is a smarter way to go, and just as good as the Sony.

JPL

It would be your best bet to buy the Nikon D850. It is a great camera and has no problem using your lenses. There are adapter manufacturers that have been trying to make adapters with autofocus and auto aperture to adapt to Sony cameras. So far no one has had a good success with this. The first adapters were terrible and causing the cameras to malfunction. Now there is one company that makes adapters that do not hurt the cameras but the functionality is still limited. Maybe they can make this work better with future firmware updates but it is not a good idea to buy a camera in hope for some improvements in this later on.

To learn more about this I recommend you check this website. It is the best source of info on this matter. http://briansmith.com/nikon-lens-adapters-sony-e-mount-cameras/

mas24 Loc: Southern CA

I definitely agree. The Sony a9 is $4500. The D850 is $3300. Buy a D850 and you can use some or all of your Nikon lenses. And you won't need an adapter.

DTran

Thank you for all the replies. I was only checking out the Nikon line but since I made this post http://www.uglyhedgehog.com/t-507703-1.html there are people who recommended that I should investigate on the Sony because I can use my Nikon lenses and someone said that the Sony doesn't have mechanical parts to wear out.
I don't really have a budget and initially thought about the D5 but then I thought that since I got much older I also take much more care of my camera so there is no need for the toughness of the D5. Also the D5 is supposed to be very fast but I have since determined not doing sport or wild life so the speed isn't needed. I did considered the D750, D810, D850 and Df. I looked only in the full frame line because I don't want to deal with the crop factor and I want my lenses to work just like they always did. I think I will get the Df before this weekend because I like its controls (of my film cameras I like the controls of the F3 a lot better than the F5) and still consider the D850 but that's for later. The reason I put off the D850 right now because I haven't seen one in real life. I heard that my lenses which most of them are old aren't sharp enough to make full use of the D850. Also I think perhaps the price of the D850 would get a bit lower in the near future.

CHG_CANON Loc: the Windy City

Only now in mid Jan 2018 are the backlog of orders being completed for customers for the wildly successful launch of the D850 ... The price isn't going to come down anytime soon (like well into 2019). The Df now reflects a lowered price of an older model, and at $2996 for a new copy, not by much. If shopping for current full-frame models, you're not going to see any discounts in any of the product lines for the various manufacturers.

rgrenaderphoto Loc: Hollywood, CA

Good, 'cause the D850 already cost three arms and three legs.

DTran

I am not sure about arms and legs as I paid about $3000 in early 1997 for my F5.

inbigd

Do you prefer mirrorless electronic viewfinders to DSLR optical ones?

DTran

No I don't.

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

This is one of six that B&H offers
https://www.bhphotovideo.com/c/product/1191277-REG/metabones_mb_nf_e_bt2_nikon_f_to_e_mount_nex.html?sts=pi
Caution, there has not been an adapter yet that keeps all the IQ of the original lens.