Canon 7D camera evolution high ISO speed noise reduction function sharing

To the photographic enthusiasts to share a detailed analysis of the Canon 7D camera evolution of high ISO speed noise reduction function.

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Key points for flexible application:

1, using a tripod shooting, even if the night scene photography can be in the ISO 3200 will be "NR" set to "close" to retain sharp detail performance.

2, raw imaging is the key to skilled use of noise reduction level. Adjust the parameters, the decision is priority to reduce noise or detail performance.

3, noise reduction processing has brightness noise reduction (miscellaneous texture) and chroma noise reduction (color spot) two kinds. "Chroma Noise reduction" compensation level than "brightness noise reduction" strong, can effectively remove the stain, you can give priority to detail performance.

The dim tungsten Illumination on the bar can also be held in camera.

Lens: ef-s 10-22mm f/3.5-4.5 usm/aperture priority automatic Exposure (F5.6,1/30 sec)/iso 12800/raw (NR: Standard)

The light on the bar is obviously not portable, but it's easy to shoot with ISO 12800. Counters and wine bottles are clearly reproduced color, feel less noise, color and level is also excellent.

Under ISO 3200, nr can be set to "off" to obtain a vivid image.

Lens: ef-s 10-22mm f/3.5-4.5 usm/aperture priority automatic Exposure (F8,1/8 sec)/exposure correction: +1ev/iso 3200/raw (NR: OFF)

In addition to hand-held photography, if you want to maintain sharp detail, even the use of a tripod in night photography needs to be photographed under ISO 3200. Sensitivity and JPEG photo quality (NR: OFF) has a good balance between.

The difference between JPEG noise reduction processing and raw data

Lens: Ef-s 17-55mm f/2.8 is usm/aperture priority automatic exposure (f8,1/40 seconds)/iso 800/raw

[A] ISO 800/nr: Close/jpeg

[B] ISO 800/nr: Close/raw/with shooting settings to display images

[C] The image on the left further sets the noise reduction level to "0" to make it appear

Skilled use of noise reduction level

Using the JPEG "A" to set the Nr to "off" and also to make a slight noise reduction process automatically. "B" is raw data, so you can change the value, and in the case of the default setting, the setting is the same as "A". The "C" is intended to set the parameter to "0". Although there is a small noise, but there is no compromise details of the performance.

On the Tool palette page of the DPP parameter settings, set the default noise reduction setting to apply camera settings to confirm the parameters for the same amount of processing that is applied to a JPEG image that is stored simultaneously.

Skilled use of DPP noise reduction processing

(common) Lens: ef-s 17-55mm f/2.8 is usm/aperture priority automatic Exposure (F8,1/20 sec)/exposure compensation: –0.6ev/iso 6400

Jpeg/iso 6400/NR: Weak

Raw/iso 6400/NR: Illumination degree of noise reduction level: 2, chroma noise reduction level: 15

The processing balance of Control degree noise (Miscellaneous texture) and chroma noise (color block) on camera is certain, and it is not suitable for the occasion of emphasizing the distinctive sense. With raw shooting, and then by DPP to adjust the effect of both, you can achieve the desired effect. For example, in the case of selecting ISO 6400 and NR as "weak", feel the details a bit empty, with DPP "illuminance noise reduction" set to "2", "Chroma noise reduction" set to "15", although the number of noise points, but can more effectively remove color spots to achieve a better balance.

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