![The diaphragm of a camera lens aperture, focus with goal target setting for center hitting on focus in the target center Stock Photo | Adobe Stock The diaphragm of a camera lens aperture, focus with goal target setting for center hitting on focus in the target center Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/01/95/19/37/1000_F_195193776_fXJnvfd4qq5MYVmMK7j66E6Bni48vctQ.jpg)
The diaphragm of a camera lens aperture, focus with goal target setting for center hitting on focus in the target center Stock Photo | Adobe Stock
![Vintage retro Beautyflex twin lens reflex camera with old negatives and film in a domestic setting Stock Photo - Alamy Vintage retro Beautyflex twin lens reflex camera with old negatives and film in a domestic setting Stock Photo - Alamy](https://c8.alamy.com/comp/2G2217G/vintage-retro-beautyflex-twin-lens-reflex-camera-with-old-negatives-and-film-in-a-domestic-setting-2G2217G.jpg)
Vintage retro Beautyflex twin lens reflex camera with old negatives and film in a domestic setting Stock Photo - Alamy
![The exposure time of a camera lens at the (f)/(2.8) setting is (1)/(200) second. The correct time of exposure at (f)/(5.6) is The exposure time of a camera lens at the (f)/(2.8) setting is (1)/(200) second. The correct time of exposure at (f)/(5.6) is](https://doubtnut-static.s.llnwi.net/static/web-thumb/11968831_web.png)