March 06, 2015, 11:42:23 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - emag

Pages: [1]
EOS Bodies - For Stills / High speed video of 7D mirror and shutter
« on: February 07, 2015, 11:55:01 AM »
I thought this was interesting.  10,000 fps video of a 7D mirror and shutter in action.

EOS Bodies - For Stills / 60D odd behavior after long exposures
« on: July 05, 2013, 09:24:28 AM »
Had the following odd behavior with my 60D yesterday......

Windy day, so we headed to the beach for some long exposure surf photos (1-1.5 minutes) and flash portrait work.  Took the portraits after the surf photos.  I used the 10 second timer to give me time to get in position with the hand-held flash with radio trigger, too windy for stands.  Frequently, the shutter would release and the flash fire as expected and then begin another 10-second countdown and repeat.  More often than not, I had to turn the camera off to get it to stop. 

I have ML on that card but was not using any ML features and made sure of it after the first occurence, nor was bracketing set.  I did note that ML reported a CMOS temperature of 163 and wondered if the camera internals were hot from the long wasn't a particularly hot day, low 80's.

I could not get the behavior to repeat after returning home and there is no feel of a sticky shutter release button, nor was there wind blown sand lodged anywhere. 

I'm not overly concerned, as it didn't repeat, but I am curious.  Anyone had similar experience?

Software & Accessories / Photoshop error message
« on: January 17, 2013, 05:59:15 PM »
I've been using Photoshop 7 for like 10 years or however long it's been around.  Works for me and I can't justify the expense of current versions, although I did buy Elements 11 (okay) and LR (!!).  PS7 was working fine and one day refused to start up, with an error message regarding a TWAIN device communication issue.  Based on an internet search, this problem pops up now and then.  Removed/reinstalled, no help.  Even tried to install PS6, same error message, same result.  I've become fairly proficient with GIMP as a result, but I sure miss PS7.

The only unusual thing I did within a day or two prior to the error message - at a public stargaze with my astro club, I was switching between an astro modded 40D and a 60D on the scope taking photos tethered to my laptop.  A woman there was fascinated and I noticed she had a 7D on her neck (much more attractive than a goiter, I must say) so I made her evening by putting her 7D on the scope and taking a slew of photos for her, again tethered to the laptop.  IIRC, the error message appeared the first time I tried to open PS7 after that.

Laptop runs Vista 32 bit  (yeah. I know)

It won't be long until I upgrade computers and PS7 will probably install just fine in the new one, but this just nags at me.  Has anyone ever seen such a thing?

Technical Support / Setting fixed aperture with auto iris lens
« on: June 01, 2012, 10:07:09 AM »
I use Av mode 99.99% of the time and have since my first 'decent' camera, a Nikon F2 in 1974 and still do today with a 60D and 40D.  When I couple a camera to my telescopes I shoot manual for astro and Av for daylight work.  Recently I've encountered a situation that has me a trifle stumped - given time I might find a solution but I suspect there is a simple solution and I needn't reinvent the wheel.  With an auto iris lens I want to set the opening fixed for timelapse.  Pressing the stopdown preview, then the lens release and turning the lens ever so slightly, I can keep the iris fixed and take a shot.  BUT, I get an ERR01 (lens communication) message after the shot.  A half shutter press clears the error message and I can then take another shot (after releasing the half shutter press - i.e., it take two shutter presses).  This won't work for timelapse.  Anyone know a workaround?  I have ML but have not fully explored its capabilities, perhaps the solution is there.  Maybe it's in the manual, in which case I deserve a slap on the back of the head and a 'RTFM'.

Pages: [1]