Close-up Diffuser CD-1000

Used directly on the camera with the built-in flash to provide soft lighting for close-up photography.

WHEN USING FILTERS

Polarizing filters and close-up lenses may cause vignetting at the wide-angle range of the lens (below the 50mm mark on the zooming ring). With very powerful close-up lenses, such as a +3 or Minolta No. 2, vignetting may be noticeable below 100mm. Most step-up rings will cause vignetting. The Minolta Step-up Adapter 49mm to 62mm can be used.

WHAT IS AN EV? WHAT IS A STOP?

Ev stands for exposure value. Stop refers to click stops in mechanical cameras. A change of one Ev or one stop will adjust the exposure calculated by the camera by a factor of two. Adjustments to exposure in the A, S, and M exposure modes are made in 1/2 stop increments or 0.5 Ev.

Change in Ev

Change in stops

Adjustment to exposure

 

 

 

+2.0 Ev

+2 stops

4X as much light

 

 

 

+1.0 Ev

+1 stop

2X as much light

 

 

 

0.0 Ev

Calculated exposure

 

 

 

–1.0 Ev

–1 stop

1/2 as much light

 

 

 

–2.0 Ev

–2 stops

1/4 as much light

 

 

 

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Minolta 7i instruction manual When Using Filters, What is AN EV? What is a STOP?