Pre-AI Lenses
Jan 10, 2019 08:35:17 #
MRHooker2u wrote:
I have some legacy pre-AI lenses that were used on... (show quote)
You need to identify your “non-CPU” lenses in the menu so that the aperture index (AI) tab in the lens when connected with the aperture feeler in the body, communicate the aperture to the meter.
Jan 10, 2019 08:51:25 #
You may want to check to see if your D750 is affected by Nikon's recall - a friend of mine had a similar issue and it turned out he had to send his D750 in.
https://www.nikonusa.com/en/service-and-support/service-advisories/technical-service-advisory-for-users-of-the-nikon-d750.html
https://www.nikonusa.com/en/service-and-support/service-advisories/technical-service-advisory-for-users-of-the-nikon-d750.html
Jan 10, 2019 09:24:08 #
olemikey
Loc: 6 mile creek, Spacecoast Florida
pesfls wrote:
I suspect bipods answer is your issue, at least it would be on my Df body. So does your 750 have a menu item called “non cpu lenses”? If so enter the data for the lens you want to use and select it. If that’s the issue all will be well and your meter will read as you wish. Hope this is helpful but admit I’ve not used a 750 so am not certain. Worth a look. Good luck.
"Non CPU Lenses" menu item would be my guess too.
Jan 10, 2019 09:24:22 #
peterg
Loc: Santa Rosa, CA
I suggest that you NOT convert early Nikon "tick mark" lenses. Like to rare stamps, they are valuable. Google for info. Example: https://www.cameraquest.com/nftick.htm. On E-Bay sellers want $700 - $2150 for them while later non-tick mark lenses go for less than $100.
What's a tick mark? See photo. They are the little painted lines at each aperture setting. After Nikon made a few of these lenses, they stopped using the tick marks since the lens already had detents at each aperture setting making the marks not needed.
What's a tick mark? See photo. They are the little painted lines at each aperture setting. After Nikon made a few of these lenses, they stopped using the tick marks since the lens already had detents at each aperture setting making the marks not needed.
Jan 10, 2019 09:42:29 #
I would like to thank everyone for their insight and comments. I now have a better understanding of the issue.
Jan 10, 2019 09:44:06 #
mas24
Loc: Southern CA
Screamin Scott wrote:
Why not just use the in-camera meter and adjust as needed? setting settings by an app, to me anyway, is akin to using the old Sunny 16 rule, meaning it isn't as accurate as it can be.
That's an old technique, the Sunny 16 Rule. It worked in most cases. I remember photographers also using external light meters in the past. I'm sure some use the newer version light meters today, that I've seen advertised at B&H Photo. Some photographers just use the guessing method on light, if your camera won't meter light for the lens. It is a skill some do better than others. I don't have a need to do that, with my current Nikon crop sensor DSLR, and lenses. My father owned a Minolta SRT-101 SLR camera, that had a great in camera light meter. He had only a 50mm prime lens on it. Which was standard on cameras back then..
Jan 10, 2019 09:45:36 #
I started out with that Minolta when I got into SLR's
mas24 wrote:
That's an old technique, the Sunny 16 Rule. It wor... (show quote)
Jan 10, 2019 10:19:17 #
i use a older 800 mm nikon nikkor ED , for birds .in the program of camera , i set it to non cpu lens , you now it is right is when you set the lens at let say f8 [ max opening ], it will show f8 , if in the non cpu program you select the wrong max f stop of the lens , you will end up with wrong exposure , i mostly shoot in A , and under normal conditions , the exposure is right ., i also use a 400mm tokina f 5.6 , and 2 older T mout lenses , so i hahe to reset the non cpu program .the camera is a D300 .
Jan 10, 2019 10:59:22 #
jeweler53 wrote:
According to the manual (P.235) "Non-CPU lenses can be used in modes A and M, with the aperture set using the lens aperture ring." This is the same on the Df.
Set the camera up so that it knows what lens is on the camera. It needs to be specified in the "Non-CPU" settings if it does not have a chip. Use the meter in the camera. It is WAY more accurate than a EV table.
Set the camera up so that it knows what lens is on the camera. It needs to be specified in the "Non-CPU" settings if it does not have a chip. Use the meter in the camera. It is WAY more accurate than a EV table.
Jan 10, 2019 11:22:08 #
Jan 10, 2019 11:59:41 #
Perhaps the scene is not as brightly overcast as you think, but only of average brightness. Try exposing for EV 11.
Jan 10, 2019 12:59:37 #
RWR
Loc: La Mesa, CA
The Nikon Df will accurately meter with any lens without entering its information in the menu.
Jan 10, 2019 13:02:06 #
Yes it will, but not entering the lens info will mean the EXIF info will be inaccurate....
RWR wrote:
The Nikon Df will accurately meter with any lens without entering its information in the menu.
Jan 10, 2019 14:58:34 #
mas24
Loc: Southern CA
User ID wrote:
Far as I can tell, the "non CPU lens data&quo... (show quote)
There are some Nikon crop sensor DSLRs, that don't have Non-CPU in the menu.
Jan 10, 2019 15:09:24 #
RWR
Loc: La Mesa, CA
Screamin Scott wrote:
Yes it will, but not entering the lens info will mean the EXIF info will be inaccurate....
And you also will have no viewfinder readouts or color matrix metering, and will lose some flash features, all of which can be important to many (most?). The manual says entering the data can improve metering accuracy, but in my tests I’ve seen no difference at all.
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