Catch in Focus

**boriscleto** · 02-25-2011, 01:36 PM

Originally posted by cadmus

Why would i not like that? I rarely use AF? I learned on a k1000. I miss my micro-prism. I insist on an aperture ring.

Ira, What do you mean by "appropriately capable lens"? What is ideal for Catch-in and why?

I was using a sigma from the <80's 50-200mm. It is totally manual. It was set to have a focal range from about 4' to 6' from the object lens. The idea was to have the camera unmanned with the button being held down with a rubberband. Then release the bug so it will fly into the plain of view, toward or slighly off angle from the camera. And the camera will snap the photo. I am a phd student in wildlife biology so i can think of several situation where i could use this on wild birds, bats, and small mammals or during the release of these critters that are more charismatic than insects. But throwing paper airplanes or even moving my arm in the correct path didn't trigger the camera. Am I expecting too much from this feature or is this idea possible?

I think you're expecting a bit too much from a feature on a consumer dslr.

CiF is mostly useful for things like focus bracketing. For example, set the camera to Continuous Hi - focus just beyond your intended focus point - hold down shutter release and slowly move the focus back through the focus range. One of the pictures is bound to have the correct focus. It's also useful when trying to handhold a macro shot.

cadmus · 02-25-2011, 02:54 PM

Thanks, I'll give up on that idea then.

I guess if i ever get serious about it i will have to macgyver an external triggering device.

___________________________________________________________________
Like these high speed laser triggers:
Laser Triggers for high speed photography
Crossed IR Beam Camera/Flash Trigger
http://www.pixiq.com/article/camera-laser-trigger
http://lifehacker.com/#!5464485/build-a-high+speed-laser+triggered-photography-rig-to-capture-split-second-exposures
sound trigger, not what i need but cool article
http://www.diyphotography.net/diy_high_speed_photography_at_home

RXrenesis8 · 02-25-2011, 03:32 PM

External triggering device...

Is that like a remote shutter release?

Or more like a wireless remote shutter release?

**boriscleto** · 02-25-2011, 04:38 PM

Originally posted by RXrenesis8

External triggering device...

Is that like a remote shutter release?

Or more like a wireless remote shutter release?

I think he's talking about a device that triggers the camera when an object (bat, bird, etc.) passes through a specific spot. Probably triggering powerful strobe lights to stop the motion as well.

02-25-2011, 02:54 PM	#17
cadmus Senior Member Join Date: Feb 2011 Location: Colorado Posts: 133	Thanks, I'll give up on that idea then. I guess if i ever get serious about it i will have to macgyver an external triggering device. ___________________________________________________________________ Like these high speed laser triggers: Laser Triggers for high speed photography Crossed IR Beam Camera/Flash Trigger http://www.pixiq.com/article/camera-laser-trigger http://lifehacker.com/#!5464485/build-a-high+speed-laser+triggered-photography-rig-to-capture-split-second-exposures sound trigger, not what i need but cool article http://www.diyphotography.net/diy_high_speed_photography_at_home Last edited by cadmus; 03-27-2011 at 07:49 AM.

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02-25-2011, 01:36 PM	#16
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by cadmus Why would i not like that? I rarely use AF? I learned on a k1000. I miss my micro-prism. I insist on an aperture ring. Ira, What do you mean by "appropriately capable lens"? What is ideal for Catch-in and why? I was using a sigma from the <80's 50-200mm. It is totally manual. It was set to have a focal range from about 4' to 6' from the object lens. The idea was to have the camera unmanned with the button being held down with a rubberband. Then release the bug so it will fly into the plain of view, toward or slighly off angle from the camera. And the camera will snap the photo. I am a phd student in wildlife biology so i can think of several situation where i could use this on wild birds, bats, and small mammals or during the release of these critters that are more charismatic than insects. But throwing paper airplanes or even moving my arm in the correct path didn't trigger the camera. Am I expecting too much from this feature or is this idea possible? I think you're expecting a bit too much from a feature on a consumer dslr. CiF is mostly useful for things like focus bracketing. For example, set the camera to Continuous Hi - focus just beyond your intended focus point - hold down shutter release and slowly move the focus back through the focus range. One of the pictures is bound to have the correct focus. It's also useful when trying to handhold a macro shot.

02-25-2011, 03:32 PM	#18
RXrenesis8 Veteran Member Join Date: Jan 2011 Location: Orlando, FL (USA) Photos: Gallery \| Albums Posts: 523	External triggering device... Is that like a remote shutter release? Or more like a wireless remote shutter release?

02-25-2011, 04:38 PM	#19
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by RXrenesis8 External triggering device... Is that like a remote shutter release? Or more like a wireless remote shutter release? I think he's talking about a device that triggers the camera when an object (bat, bird, etc.) passes through a specific spot. Probably triggering powerful strobe lights to stop the motion as well.