對焦、變焦與景深, 127 | Nikon 2191 specification

對焦、變焦與景深

對焦前，請先轉動變焦環調整焦距，直至獲得滿意的構圖。如果相機具有景深預覽（縮小光圈）按鍵或控制桿，則可以通過相機觀景器預覽景深。

•這個鏡頭配備內部對焦（IF）系統。隨著拍攝距離減小，焦距也會減小。

•距離尺不會顯示主體與相機之間的精確距離。數值均為近似值，只能作為一般參考。拍攝遠方風景時，景深可能會影響操作，且主體可能會在比無限遠更近的位置對焦。

•如需關於景深的詳細資訊，請參閱第 144 頁的圖表。

•焦距為28mm時，如果變焦鎖定設定於LOCK位置，變焦環即被鎖定。攜帶相機時，鎖定變焦環，以免鏡頭因本身重量而伸出。

光圈設定

用相機調整光圈設定。

可變最大光圈

將鏡頭從28mm變焦為300mm時，最大光圈減少1 1/3檔。不過，不需要調整光圈設定即可得到正確曝光，因為相機會自動補償此變動。

對焦

請根據下表來設定相機的對焦模式：

相機	相機	鏡頭對焦模式
相機	對焦模式	M/A				M
	對焦模式	M/A				M
尼康數碼單鏡反光（尼康FX/DX格式）	AF (C/S)	自動對焦		（		手動對焦	）
尼康數碼單鏡反光（尼康FX/DX格式）		自動對焦			可使用電子
相機、F6、F5、F4系列、F100、F90X、		和手動補償			可使用電子
						測距儀。

F90系列、F80系列、F75系列、F70系列、
F90系列、F80系列、F75系列、F70系列、			手動對焦
F65系列、Pronea 600i、Pronea S	MF		手動對焦
	MF	（可使用電子測距儀。）
		（可使用電子測距儀。）
F60系列、F55系列、F50系列、F-801s、	AF (C/S)		手動對焦
F-801、F-601M、F-401x、F-401s、F-401	MF	（可使用電子測距儀，但F-601M除外。）

AF: 自動對焦 MF: 手動對焦

自動對焦和手動補償（M/A模式）

a將對焦模式切換器設定在M/A。

b可以使用自動對焦，但通過半按住快門釋放按鍵，同時轉動獨立對焦環，或者在配備AF-ON按鍵的相機上按此按鍵，則可以使自動對焦操作無效。

c再半按一次快門釋放按鍵或再按一次AF-ON按鍵即可取消手動對焦並恢復自動對焦。

127 2191 specifications

The Nikon 2191, also known as the Nikon D780, is a versatile and powerful DSLR camera that has been designed to meet the needs of both professional photographers and serious enthusiasts. As a successor to the popular Nikon D750, the D780 builds upon its predecessor's strengths while incorporating advanced features and technologies that enhance the shooting experience.

One of the standout characteristics of the Nikon 2191 is its impressive 24.5-megapixel full-frame sensor. This sensor delivers outstanding image quality, with a remarkable level of detail, dynamic range, and color accuracy. The D780 is capable of producing stunning images, even in challenging lighting conditions, thanks to its native ISO range of 100 to 51,200, extendable to an incredible ISO 50 to 204,800.

The camera features Nikon's renowned EXPEED 6 image processor, which not only enhances image quality but also improves overall performance. This processor enables faster shooting speeds of up to 7 frames per second in continuous shooting mode with the optical viewfinder. When using live view mode, this rate increases to an impressive 12 frames per second, allowing photographers to capture fast-moving subjects with ease.

Focusing technology is another key highlight of the D780. It employs a 51-point AF system with 15 cross-type sensors, providing reliable and accurate autofocus performance. Additionally, the camera features a new hybrid autofocus system that combines phase detection and contrast detection for faster focusing in live view and video modes. With a focus sensitivity that reaches -4 EV, the D780 excels in low-light situations.

Video capabilities are also a strong point of the Nikon 2191, offering 4K UHD recording at up to 30 frames per second, as well as full HD recording at up to 120 frames per second for slow-motion footage. The camera provides several video options and features, including N-Log and HDR recording, giving videographers creative flexibility.

The D780's robust construction ensures durability and reliability in various shooting environments. It is designed with weather sealing to protect against dust and moisture, making it an ideal companion for outdoor photography. The camera also includes a tilting touchscreen LCD that provides intuitive control and easy access to settings.

In summary, the Nikon 2191/D780 is a powerful, feature-rich camera that excels in both photography and videography. With its full-frame sensor, advanced autofocus system, and outstanding video capabilities, it stands out as a top choice for photographers seeking a versatile and high-performance DSLR.

Nikon 2191 manual 對焦、變焦與景深, 127

Models: 2191

對焦、變焦與景深

可變最大光圈

請根據下表來設定相機的對焦模式：

鏡頭對焦模式

127

2191 specifications