Using trap focus with AF lenses.

**barondla** · 09-09-2006, 09:14 PM

A friend wants to try trap focus with her DS. She only has AF Pentax lenses. Which contacts do you short out on the body/lens to do this? What do you use to short them out?
thanks
barondla

mingdie · 09-09-2006, 10:27 PM

Have a look at this tread at DPreview. http://forums.dpreview.com/forums/read.asp?forum=1036&message=15117360

Cheers

Eddie

JCSullivan · 09-11-2006, 09:09 AM

Why would one want to do that?

Rufus T. Firefly · 09-11-2006, 09:28 AM

Originally posted by JCSullivan

Why would one want to do that?

One reason is macros. You can move your camera in towards your subject until it is in focus and then the shutter fires. Another, birds could move into the focus range and trip the shutter.

09-09-2006, 09:14 PM	#1
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,714	Using trap focus with AF lenses. A friend wants to try trap focus with her DS. She only has AF Pentax lenses. Which contacts do you short out on the body/lens to do this? What do you use to short them out? thanks barondla

09-09-2006, 10:27 PM	#2
mingdie Veteran Member Join Date: Sep 2006 Location: Auckland, New Zealand Photos: Gallery Posts: 630	Focus trap Have a look at this tread at DPreview. http://forums.dpreview.com/forums/read.asp?forum=1036&message=15117360 Cheers Eddie

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09-11-2006, 09:09 AM	#3
JCSullivan Veteran Member Join Date: Sep 2006 Location: Windsor, Canada Posts: 3,056	Why would one want to do that?

09-11-2006, 09:28 AM	#4
Rufus T. Firefly Junior Member Join Date: Sep 2006 Location: Marshfield MA. Posts: 35	Originally posted by JCSullivan Why would one want to do that? One reason is macros. You can move your camera in towards your subject until it is in focus and then the shutter fires. Another, birds could move into the focus range and trip the shutter.