Auto Focus and Remote Control
Posted 01/04/2009 - 09:36
Link
polchraine wrote:
Robin,
It is because of the light path in an SLR - happens with all brands and models and has always been the case.
OK.Robin,
It is because of the light path in an SLR - happens with all brands and models and has always been the case.
Rob
K20D
MZ 50
Pentax lenses....DA* 55mm f1.4 SDM ....F 35-80 f4-5.6....DA 18-250 f3.5-6.3....F 100-300 f4.5-5.6, D FA Macro 100 WR f2.8.
Centon mirror lens 500mm.
Pentax Flash ....AF 360FGZ
JVC 3ccd GZ MC 500EK camcorder
MZ 50
Pentax lenses....DA* 55mm f1.4 SDM ....F 35-80 f4-5.6....DA 18-250 f3.5-6.3....F 100-300 f4.5-5.6, D FA Macro 100 WR f2.8.
Centon mirror lens 500mm.
Pentax Flash ....AF 360FGZ
JVC 3ccd GZ MC 500EK camcorder
Posted 01/04/2009 - 12:20
Link
When snapping with my newly discovered Centon 500mm mirror lens yesterday, I observed camera shake, when carefully looking thru the viewfinder, camera on tripod...using self timer, 12 secs.
This is a function of mirror vibration.
For those of you who are not aware, the solution to this is to use the mirror up function, 2 sec self timer in drive mode.
Whilst using remote, the picture is taken 2 secs after mirror pops up, thereby preventing camera shake from that source. AE lock is enabled with the exposure value set immediately before the mirror goes up.
RTFM p128
Rob
This is a function of mirror vibration.
For those of you who are not aware, the solution to this is to use the mirror up function, 2 sec self timer in drive mode.
Whilst using remote, the picture is taken 2 secs after mirror pops up, thereby preventing camera shake from that source. AE lock is enabled with the exposure value set immediately before the mirror goes up.
RTFM p128
Rob
K20D
MZ 50
Pentax lenses....DA* 55mm f1.4 SDM ....F 35-80 f4-5.6....DA 18-250 f3.5-6.3....F 100-300 f4.5-5.6, D FA Macro 100 WR f2.8.
Centon mirror lens 500mm.
Pentax Flash ....AF 360FGZ
JVC 3ccd GZ MC 500EK camcorder
MZ 50
Pentax lenses....DA* 55mm f1.4 SDM ....F 35-80 f4-5.6....DA 18-250 f3.5-6.3....F 100-300 f4.5-5.6, D FA Macro 100 WR f2.8.
Centon mirror lens 500mm.
Pentax Flash ....AF 360FGZ
JVC 3ccd GZ MC 500EK camcorder
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1321 posts
20 years
LHR/ABZ INV/OSL/ZRH/LAX SNA/SEA/YUL +++
It is because of the light path in an SLR - happens with all brands and models and has always been the case.
K20D, *istD, MZ-S, Super-A, ME Super, MX
DA* 16-50, DA* 50-135, DA* 300,
DA 50-200, FA 24-90, FA 20-35,
M 400-600, A 50 f1.4, A 28 f2.8, A 70-210, M 35-80, M 50 f1.7
A x2S teleconverter and a few others ...