Does the DFA* 50 f/1.4 stabilise K1 shutter shake?

Paul the Sunman · 08-05-2018, 08:48 PM

I see noticeable effects of shutter shake on the K1 between about 1/100 sec and 1/200 sec, especially with the rather light DFA 28-105. Less so with heavier lenses.

I am wondering whether the new DFA* 50mm f/1.4 improves the situation. Is there anyone who has this lens and normally suffers shutter shake who can test it?

Sorry if this has been discussed elsewhere; I haven't seen it.

biz-engineer · 08-05-2018, 10:02 PM

Very good question. I'd also be interested by the answer.

**kiwi_jono** · 08-06-2018, 01:04 AM

Great question! I have the FA50 f1.4 and I know that experiences some affects from shutter shock but I'm guessing the considerable mass of the DFA*50 will have an influence. Look forward to answer to this one.

Paul the Sunman · 08-08-2018, 12:15 AM

Originally posted by kiwi_jono

Great question! I have the FA50 f1.4 and I know that experiences some affects from shutter shock but I'm guessing the considerable mass of the DFA*50 will have an influence. Look forward to answer to this one.

My impression is that, whilst shear lens mass has an effect, it is not the whole story. The DFA 28-105 seems particularly prone. Perhaps there is a resonance in the system with that lens, because of its structure. There is no way of knowing how the DFA* 50 will fare without trying it (or doing some prohibitively complicated calculations). I would rather know before buying, but its stellar performance may be too attractive to resist forever.

08-05-2018, 08:48 PM	#1
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,847	*Does the DFA 50 f/1.4 stabilise K1 shutter shake?** I see noticeable effects of shutter shake on the K1 between about 1/100 sec and 1/200 sec, especially with the rather light DFA 28-105. Less so with heavier lenses. I am wondering whether the new DFA* 50mm f/1.4 improves the situation. Is there anyone who has this lens and normally suffers shutter shake who can test it? Sorry if this has been discussed elsewhere; I haven't seen it.

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08-05-2018, 10:02 PM	#2
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,247	Very good question. I'd also be interested by the answer.

08-06-2018, 01:04 AM	#3
kiwi_jono Loyal Site Supporter Join Date: Dec 2009 Location: Christchurch, New Zealand Photos: Gallery \| Albums Posts: 2,437	Great question! I have the FA50 f1.4 and I know that experiences some affects from shutter shock but I'm guessing the considerable mass of the DFA*50 will have an influence. Look forward to answer to this one.

08-08-2018, 12:15 AM	#4
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,847 Original Poster	Originally posted by kiwi_jono Great question! I have the FA50 f1.4 and I know that experiences some affects from shutter shock but I'm guessing the considerable mass of the DFA50 will have an influence. Look forward to answer to this one. My impression is that, whilst shear lens mass has an effect, it is not the whole story. The DFA 28-105 seems particularly prone. Perhaps there is a resonance in the system with that lens, because of its structure. There is no way of knowing how the DFA 50 will fare without trying it (or doing some prohibitively complicated calculations). I would rather know before buying, but its stellar performance may be too attractive to resist forever.