A little trick for owners of advanced Nikon cameras that can measure exposure with lenses without a CPU.
To get auto metering exposure on closed diaphragms, you can apply the following simple trick. When closing the diaphragm one step, just enter the correction exposure +1 ev For example, using Non-AI lens Nikon Nikkor-S Auto 1: 1.4 f = 50mm I decided to shoot at f / 2.8 aperture. In the camera menu (except for the Nikon D1 series) in the Non-CPU section of the lenses, I set the values to 50mm and F / 1.4, when shooting at F / 2.8 I just set the correction exposure +2 ev The difference between F / 1.4 and F / 2.8 is exactly 4 times (2 steps). Thus froze exposure the camera will carry out at F / 1.4, but shoot at F / 2.8, taking into account the amendment exposure, I will get a correctly exposed picture. Correction Amount exposure It is calculated based on the numbers F in steps.
This is a simple and easy way to use aperture priority mode with Non-ai lenses when taking pictures on covered apertures. Personally, I’m very comfortable using this method with Non-AI lenses on older Nikon cameras.
Old Pre-ai lenses do not need to be AI-converted for automatic operation on closed apertures. You can use exposure compensation for automatic metering on covered apertures.
Thank you for attention. Arkady Shapoval.