TTL flash for 645.

LightMeter · 10-30-2011, 11:41 AM

I'd like to get a flash for the 645. Does it use the same TTL as the new digital SLRs. Can I get one flash for the 645 and a K-r if I get one?

Ole · 10-30-2011, 02:22 PM

The 645 uses TTL flash. The new DSLRs use P-TTL flash.

The current Pentax flashes like AF360FGZ and AF540FGZ support both modes and can be used on the 645 as well as on a Pentax DSLR.

Older Pentax flashes do not have P-TTL.

**seventhdr** · 10-30-2011, 03:06 PM

What you need is a TTL flash for the Pentax 645 and 645N cameras. If you have a 645NII you get to use P-TTL.

The K-r only supports P-TTL.

As Ole noted both the AF360FGZ and AF540FGZ support P-TTL and TTL so you could use them on both cameras.

Regards

Chris Stone

drougge · 10-31-2011, 02:49 PM

The Metz 48 AF-1 (and presumably others of the same generation) supports the old TTL as well.

10-30-2011, 11:41 AM	#1
LightMeter Senior Member Join Date: Sep 2011 Location: Houston, Republic of Texas Posts: 158	TTL flash for 645. I'd like to get a flash for the 645. Does it use the same TTL as the new digital SLRs. Can I get one flash for the 645 and a K-r if I get one?

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10-30-2011, 02:22 PM	#2
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,408	The 645 uses TTL flash. The new DSLRs use P-TTL flash. The current Pentax flashes like AF360FGZ and AF540FGZ support both modes and can be used on the 645 as well as on a Pentax DSLR. Older Pentax flashes do not have P-TTL.

10-30-2011, 03:06 PM	#3
seventhdr Site Supporter Join Date: Mar 2007 Location: Christchurch, New Zealand Photos: Gallery Posts: 1,439	What you need is a TTL flash for the Pentax 645 and 645N cameras. If you have a 645NII you get to use P-TTL. The K-r only supports P-TTL. As Ole noted both the AF360FGZ and AF540FGZ support P-TTL and TTL so you could use them on both cameras. Regards Chris Stone

10-31-2011, 02:49 PM	#4
drougge Veteran Member Join Date: Jan 2010 Location: Malmö Photos: Gallery Posts: 787	The Metz 48 AF-1 (and presumably others of the same generation) supports the old TTL as well.

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