Never take a small child anywhere that requires patience and concentration
Why wouldn't it disable AF by just turning it off on the lens? I never change it on the body.
When I get back I'll have a look no worries.Just have with the body in AF,
Nikon 20mm on M set on lens does not AF
Sigma 35mm on M set on lens does not AF
Nikon 85mm on M set on lens DOES AF on half pressing the shutter button.
@kingo15 can you test yours please see if it's the same?
Not re-tested it but 99.9% sure that it turns off AF if I put the lens into MF with my setup.Everyone will be testing later haha
FS Tim!!
With bbf or half shutter press it won't focus with the lens turned to m
With bbf or half shutter press it won't focus with the lens turned to m

It was indeedI assume that's with the body set to AF?
@Sectionate re your comment on Flickr, which Nikon 50 do you have? I have owned both of the 1.8's and the Sigma is in a completely different league altogether. It is 4x the price of the G so i guess it should be. It's probably 4x as heavy too though.
The siggy is crisp wide open, but don't forget to budget for the dock.
BBF is great for landscapes. Just changing AF/MF on either lens or body should be enough though, shouldn't need both.I always had the problem of not changing both AF switches on the lens and camera whilst trying to stop the auto focus work when doing landscapes and accidentally changing the focus. I've solved this issue by using back button focus when doing landscapes. It makes turning the focus on and off much easier and now I don't accidentally change focus. With BBF I leave both the lens and camera set to AF and don't need to change those switches to turn the focus on and off.
BBF is great for landscapes. Just changing AF/MF on either lens or body should be enough though, shouldn't need both.
All Photos-67 by -Rob - Nikon-was watching it too but couldn't sell my J45 in timeI nearly did what is probably a silly thing, I got tempted to swap the d750 for a d810 in the classifieds this week, thankfully it's now sold. D810's seem to be going for great prices at present (that said the the d750 prices are even before for buyers not sellers). Thankfully my head stopped it by looking what the differences between the two are. There are some benefits but don't think there is enough for me to honestly justify the change. Whilst the extra MP would be great for cropping and the shutter curtain lever is much easier than that silly plastic cover (that I've lost!!) there isn't much between them that warrants the extra £300-£350. Before getting the d750 the d810 would have been ideal, probably more of a case of GAS than anything else and thankfully it was stopped!
Good point, all my lenses are AF-S and forgot that AF worked differently.Interesting point in the D750 manual on page 132. It is dependant on whether the lens is AF or AF-S. If its an AF-S you can set the lens to M with the camera body on AF without a problem. If it's an AF lens you have to set both to M otherwise it could cause damage to the lens or camera. Looking on the internet this damage is likely to be caused to gearing /auto focus motor as they are not disengaged from the auto focus motor if the lens focus ring is turn manually. It looks like the manual says it's fine to keep the Camera set to AF and only use the AF-M on the lens with AF-S lenses but always change both on with the older AF lenses.
I thought there must be a reason for having two switches, but it was far to late to look into this after I got in late from work last night. Nikon isn't going to add in extra manufacturing costs if it can be done with just the lens. As third parties like sigma, tamron reverse engineer their lenses the camera switch wouldn't have been added for their benefit.
All Photos-67 by -Rob - Nikon-
Nearly did this myself last month, only thing that stopped me was that I didn't like the grip on the D810.I nearly did what is probably a silly thing, I got tempted to swap the d750 for a d810 in the classifieds this week, thankfully it's now sold. D810's seem to be going for great prices at present (that said the the d750 prices are even before for buyers not sellers). Thankfully my head stopped it by looking what the differences between the two are. There are some benefits but don't think there is enough for me to honestly justify the change. Whilst the extra MP would be great for cropping and the shutter curtain lever is much easier than that silly plastic cover (that I've lost!!) there isn't much between them that warrants the extra £300-£350. Before getting the d750 the d810 would have been ideal, probably more of a case of GAS than anything else and thankfully it was stopped!
Got the vertex one, only used it once when I did the London Marathon this year..Oh speaking of grips do many of you guys use a grip on the d750?
What you ran the marathon with your d750??Got the vertex one, only used it once when I did the London Marathon this year..
Interesting point in the D750 manual on page 132. It is dependant on whether the lens is AF or AF-S. If its an AF-S you can set the lens to M with the camera body on AF without a problem. If it's an AF lens you have to set both to M otherwise it could cause damage to the lens or camera. Looking on the internet this damage is likely to be caused to gearing /auto focus motor as they are not disengaged from the auto focus motor if the lens focus ring is turn manually. It looks like the manual says it's fine to keep the Camera set to AF and only use the AF-M on the lens with AF-S lenses but always change both on with the older AF lenses.
I thought there must be a reason for having two switches, but it was far to late to look into this after I got in late from work last night. Nikon isn't going to add in extra manufacturing costs if it can be done with just the lens. As third parties like sigma, tamron reverse engineer their lenses the camera switch wouldn't have been added for their benefit.
All Photos-67 by -Rob - Nikon-
Sounds like a lens issue rather than the d750 if 2 other lenses are working the way it should.But Tim's 85 doesn't...