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Depth-of-Field 

Exposure Compensation Calculation

Magnification and Effective F-number 
The aperture displayed by the camera assumes that the focus is set 
to  infinity(∞).  The  actual  aperture  (effective  f-number) 
becomes darker (effective f-number increases) at closer focusing 
distances  (magnification  increases).  However,  for  closeup 
photography,  you  can  not  ignore  the  change  in  the  effective 
f-number and need to increase EV based on the circumstance. [ For 
understanding of actual EV, the exposure compensation table and 
metering table(continued on the last page) shown below are for 
your reference. ]

As  macro  photography  comes  with  shallow  depth-of-field,  so  you 
need to focus carefully to achieve ideal sharpness. Please refer to the 
depth-of-field table to understand DOF in advance.

INSTRUCTIONS

INSTRUCTIONS

Summary of Contents for LAO-25-CR

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Page 2: ...Prior to use please read this instruction manual carefully before to ensure proper use Keep the Instruction Manual in hand and refer to it whenever needed If you are unable to solve the problem by rea...

Page 3: ...ash of the camera the lens itself may block light and cause light fall off So external flash can be recommended in such case Safety Precautions Compact body and ease of use make the lens a perfect mat...

Page 4: ...h UV filter Using a circular motion with lens cloth or cloth gently remove oil fingerprints and grime from the lens surface working from the center outward If the lens is taken from a cold environment...

Page 5: ...ach then quick release plate if needed When shooting vertically turn the camera and lift the knob upwards and then line up the optical axis with the 90 position index on the tripod mount ring Refer th...

Page 6: ...an give priority to magnification or to framing Focusing Instructions Limited to close up shots it allows a focusing distance range of 173 0mm to 223 8mm and can not focus to infinity Gently turn the...

Page 7: ...ases However for closeup photography you can not ignore the change in the effective f number and need to increase EV based on the circumstance For understanding of actual EV the exposure compensation...

Page 8: ...bject itself It is difficult to obtain correct exposure the first time so please keep practicing SPECIFICATIONS Since diffusion materials may reduce the light of the flash so selecting a macro flash w...

Page 9: ...continued from previous page METERING TABLE METERING TABLE...

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