movement/drag at 125th?

Discussions regarding Phase One 645 DF / DF+ and Mamiya 645 DF / DF+
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Re: movement/drag at 125th?

Postby yaya » Wed Feb 29, 2012 8:45 pm

Next time go up to 1/250th or 1/500th and you'll be able to tell the difference I'm sure!

I was on a shoot last Friday of bridal wear; Anything from full-length of a wedded couple to headshots of the brides

Aptus-II 12, 645DF, 80mm LS at f5.6-f10 and 1/250th

Other than the odd image where focus was slightly off, all 1,100 images seem tack sharp with no apparent camera/ mirror/ shutter shake
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Re: movement/drag at 125th?

Postby Jguffy » Wed Mar 14, 2012 5:57 am

I also had this experience recently with a rented Phase 645DF with, not that it matter's a Phase P40+
125th is so slow. I was shooting with a Profoto, Pro twin head into two Profoto 7a 2400 packs as the main light source. motion blur is visible in many shots. The method to focus is a shame, too. The Hasselblad's with user button for focus is the best system. The Phase 645DF has a shutter delay and shooting at 125th is inherently slow.
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Re: movement/drag at 125th?

Postby yaya » Fri Mar 16, 2012 12:04 am

Jguffy wrote: The method to focus is a shame, too. The Hasselblad's with user button for focus is the best system.


On the DF you can set the AE button to activate the AF just like on the Hasselblad

If you're using one of the LS lenses then there's no real reason to shoot at 1/125 with flash...
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Re: movement/drag at 125th?

Postby Frank Doorhof » Sun Apr 22, 2012 8:16 am

I have a similar problem when my batteries are almost empty.
Some images will be pin sharp others will have some sort of motion blur, when changing the accupack for a fresh one it works again.

With the grip this means for me changing packs twice a day ;(
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Re: movement/drag at 125th?

Postby Kagetsu » Sun Apr 22, 2012 5:46 pm

I agree with Yaya.
If you're using the leaf shutter lenses, keep the sync up a bit higher, over all if your flash rates are faster then the shutter speed, you won't have lighting issues (assuming it's the ambient light causing issues).
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