What's the difference between Nikon SLR automatic gear and P gear?

1, the difference between automatic and semi-automatic

Auto is purely automatic. Pure manual, the combination of aperture and shutter can only be adjusted by yourself, and the camera will not help you make any settings.

P belongs to program automation, and the camera gives you the combined value of aperture and shutter according to photometry. You can adjust this combination value to produce different effects, so that it will not be overexposed or underexposed, so P is often called the automatic gear in manual gear, but it is still a manual gear after all.

2. Including the above differences.

AUTO mode means "automatic mode", and P mode means "automatic program exposure".

3, the difference in use

Even for beginners of digital SLR, I suggest to use P mode more, so that we can have more perceptual knowledge of the influence of sensitivity, white balance and other parameters on the shooting picture. After changing to the P position, you can adjust the aperture and shutter by turning the front and rear wheels. When adjusting the shutter disk, the metering system will automatically adjust the shutter speed according to the metering result and the preset program.

Automatic mode is a more automatic mode, in which parameters such as white balance and exposure compensation are "taken over", that is to say, many digital SLR can't adjust these parameters in this mode, and everything is automatic.

Extended data:

Nikon SLR symbol meaning:

Auto focus: auto focus

AF-S: Built-in ultrasonic focusing drive motor drives the lens to focus automatically.

ED: ultra-low dispersion glass lens is used.

SK: multilayer coating of lens

ASP: Aspheric lens is used to improve the wide-angle imaging quality.

CRC: There is a close-range image correction system.

If: internal focusing, the lens barrel will not rotate when focusing.

RF: Focus the rear lens to accelerate autofocus.

DC: It is equipped with a front-back defocus control loop, which changes the front-back depth of field of the subject by artificially increasing the spherical aberration.

D: Distance information can be transmitted to the fuselage.

M/A: In the process of autofocus, you can change to manual focusing at any time without moving the switch key.

VR: Equipped with electronic damping system (like Canon's IS) can reduce the use of three-speed shutter.

VR II: Equipped with the second generation electronic shock absorption system, it can reduce the use of 4-speed shutter and is generally used for higher-level lenses.

DX: It means that this lens is only suitable for APS-C format cameras.

SWM: This means that the lens focus motor is a silent WaveMotor, which can ensure the smooth and quiet autofocus operation of the lens.

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