Yes, I noticed this long ago when using my D in the studio with a PC cord connection. Never thought it worthy of mention. It certainly doesn't affect my photography. Paul On Feb 18, 2007, at 11:00 PM, J. C. O'Connell wrote:
> from a practical standpoint there is very > very little difference between 1/150 and 1/125 > in terms of exposure. Its only about 1/4 of one > stop difference. Nothing to freak out about, > just use the 1/125 setting and forget about it. > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of > Peter Loveday > Sent: Sunday, February 18, 2007 10:23 PM > To: Pentax-Discuss Mail List > Subject: Re: *istD X Sync > > >> The ambient light should be contributing almost >> nothing to the exposure under these circumstances. The duration of >> the > >> flash exposure is 1/1000-1/20,000 sec, depending upon the >> exposure. X > >> synch fires the flash at the midpoint of the shutter's exposure. So, >> the shutter speed should make no difference at all. >> >> Or is there something I am missing too? > > Oh, I'm not complaining about the results I get at 1/125, it does work > as > expected. > > Its just that every one of my other Pentax bodies (8 in all) allow > me to > set > them to X sync; either by an explicit X position, or by virtue of the > fact > it is a 'standard' shutter speed, like 1/125 etc. > > I was just suprised that there is no way to set it to 1/150 at > all. It > does > select that with an external dedicated flash, just can't do it with > a PC > > connection. > > - Peter > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
