Pentax Lens manual Clamp Screw, Off

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Clamp Screw

FA Macro 50mm f/2.8 and 100mm f/2.8 lens- es are equipped with a clamp screw that is used when focusing manually. With manual close-up photography using the copy stand in any situation or with the lens pointing down , if you turn the clamp screw to the ON posi- tion, rotation of the focusing ring becomes tight. This helps to prevent the rotation of the focusing ring due to the lens's own weight and avoid any shift in focus.

•When shooting in the autofocus mode, turn the clamp screw to the OFF position. Activating the autofocus mode while the clamp screw is in the ON position slows down the focusing speed.

OFF

O

N

 

CLAMP

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Contents Smc PENTAX-FA Interchangeable Lens Mounting and Removing For Safe USE of Your Lens Or damage to the equipmentPrecaution and Lens Maintenance Smc Pentax F, FA and FAJ Lenses Camera/Lens Mount Compatibility Mounting and Removing of Lens To mount the lens on the camera bodyTo remove the lens Setting the aperture to AAuto Finger PointAperture Control Focusing To set the focus modeManual focus mode Stops or F-NUMBERS and Click Stops HOW to USE the Infrared Index Lens Hood How to Use the Round Hood How to Use the Square HoodHow to attach How to Use the Built-in Hood Lenses with Built-in HoodsHow to Use the Lens Hood with polarizing filter window Precaution on filters FiltersScrew-in Type Filters Size Lens Precautions for using a polarizing filterZoom Lens Power Zoom Lens Auto zoom switch and Zoom set buttonAuto zoom functions Automatic lens retraction Using the manual zoom Using the power zoomAuto position Manual apertureInfrared Index of the Zoom Lens 200Macro Lens To set the focus-range limiter Focus-range limiterPage OFF Clamp ScrewMagnification Scale Tripod MountWIDE-ANGLE Lens FA 24mm f/2 if Page 85mm f/1.4 lens Built-in Flash Precautions When the Flash is UsedSoft Case for Lens View Specifications⋅ S Type Lens Diameter Weight Soft FA 65.6 ⋅ 40.3 195 66 ⋅ 305 10.8 Page MZ-S Page Statement of FCC Compliance Copyright C Pentax Corporation
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