Pentax 645 25mm lenses differences

Newmoon · 07-18-2012, 05:46 AM

I know there are various threads about the DA and DFA lenses, but I was wondering if anyone knows definitely if there are any differences, apart from hood and 30gms weight (which I presume is due to the hood)?
Has anyone been able to actually see the two lenses side by side and compare?

Thanks

Newmoon · 07-18-2012, 10:21 AM

To add to my original post, a photograph of the DFA lens I printed out from the Home - Vanbar Imaging website, and a DA lens I printed from the Home - PENTAX Photo site are identical in scale, and the hoods are identical in scale also, the only difference I can see being the letters DA and DFA lettering on the silver ring.

Ryan Tischer · 07-18-2012, 10:45 AM

I asked this exact same question about a month ago and didn't get any solid answers. Nobody seems to know for sure, but hopefully some answers will come. I have the D FA 25mm.

Newmoon · 07-18-2012, 11:11 AM

On looking at the hood further there is a difference, with the DFA flaring wider at something close to a 90 degree angle and the DA at about a 45 degree angle.

Zygonyx · 07-21-2012, 09:51 PM

I wonder if hoodshape CAN be of any effective flare difference, since with the D-FA, i haven't so far be in situation to get some even in heavy backlight situation .

07-18-2012, 05:46 AM	#1
Newmoon Forum Member Join Date: Jan 2012 Photos: Albums Posts: 84	Pentax 645 25mm lenses differences I know there are various threads about the DA and DFA lenses, but I was wondering if anyone knows definitely if there are any differences, apart from hood and 30gms weight (which I presume is due to the hood)? Has anyone been able to actually see the two lenses side by side and compare? Thanks

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07-18-2012, 10:21 AM	#2
Newmoon Forum Member Join Date: Jan 2012 Photos: Albums Posts: 84 Original Poster	To add to my original post, a photograph of the DFA lens I printed out from the Home - Vanbar Imaging website, and a DA lens I printed from the Home - PENTAX Photo site are identical in scale, and the hoods are identical in scale also, the only difference I can see being the letters DA and DFA lettering on the silver ring.

07-18-2012, 10:45 AM	#3
Ryan Tischer Veteran Member Join Date: Feb 2012 Location: Duluth, Minnesota Photos: Albums Posts: 458	I asked this exact same question about a month ago and didn't get any solid answers. Nobody seems to know for sure, but hopefully some answers will come. I have the D FA 25mm.

07-18-2012, 11:11 AM	#4
Newmoon Forum Member Join Date: Jan 2012 Photos: Albums Posts: 84 Original Poster	On looking at the hood further there is a difference, with the DFA flaring wider at something close to a 90 degree angle and the DA at about a 45 degree angle.

07-21-2012, 09:51 PM	#5
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,032	I wonder if hoodshape CAN be of any effective flare difference, since with the D-FA, i haven't so far be in situation to get some even in heavy backlight situation .

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