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Topics - fotoray

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EOS Bodies - For Stills / Lens micro-adjust for 5D3
« on: March 20, 2012, 11:48:28 PM »
I've downloaded and am reading the user manual while waiting for my 5D3 to arrive.  The AF microadjustment described on p. 104-109 has new capability (to me) that allows for separate calibration at each focal length extreme of a zoom lens. The manual calls these settings W (wide) and T (telephoto).  Once these settings are stored in the camera for a specific lens the adjustments for other focal lengths are automatically scaled by the camera based on the W and T settings.

I previously have attempted calibrating my EF-S 17-85 zoom with my 7D using the LensAlign MkII tool.  The 7D allows for a single microadjustment - obviously a limiting choice for zoom lens.  Seemed like a capability only for prime lenses.

The W and T settings may have been in 1D models for quite some time, or it could be new to the 5D3, and likely the 1D X too.

Does anyone have any experience with the W and T capability and can comment on its effectiveness?  :)

Software & Accessories / What raincover solution do you use?
« on: September 21, 2011, 04:57:49 PM »
Going to Michigan next month to shoot the fall color and want to be prepared for rainy conditions. Need a raincover for my 7D + tripod that is effective, easy to use, and reasonably priced.  Have used trash bags in the past but find them a bit awkward.   Any suggestions? :-\

Software & Accessories / corrupt file name provided by my 7D
« on: June 30, 2011, 07:34:57 PM »
I have always formatted my CF card with the 7D.  The standard RAW file name has been IMG.xxxx.CR2.

Suddenly I now get _MG.xxxx.CR2.  The file itself is OK, just the name that is automatically written has somehow been corrupted to  _MG.xxxx.CR2.
I have been numbering my files continous via the 7D menu.   Thought of resetting the numbering to zero, but would rather not, if it's not necesary to fix this issue.

Any ideas of how file name got corrupted, and how to get rid it? 

I recently had a curious experience with one of my LP-E6 batteries....

I have four LP-E6 batteries for my 7D.  All appear to be genuine Canon batteries - not counterfeit.  I have numbered them 1 to 4 and have them registered in my 7D.  I rotate them regularly and keep them charged using the Canon LC-E6 charger.

One day battery #2 would not accept a charge and was dead as a doornail when I put it in the 7D - could not operate the camera at all with this battery.

I put the battery aside convinced it was gone forever.   In spite of this, a couple weeks later I put battery #2 back in the 7D and saw a small trickle of life in it.   I then succeeded in charging the battery.  The 7D said it was 95% charged but had some degraded performance -- meaning only two of the three green bars were lit.

Batteries #1, #3, and #4 continue to work fine, so I am comfortable that my charger is working properly.

I accept that battery #2 may nearing it's useful life.
Or am I missing something?    Any advice on special battery care that I may not be doing?   

What is significance of gold versus silver rings on EF-S lens barrel?   

The new EF-S 55-250 lens appears to have silver ring (if it is a color photo).  The older 17-85 has gold, the newer 15-85 has silver, while the 10-22 has gold.  There seems to be a random mixture - or is it really random?

Does this have a meaning - like the red ring is for L lenses, and the green ring for DO lenses?   ???


I have my digital pic files stored on single 2TB LaCie external hard drive attached to my Mac.   Want to back up these files to an identical external hard drive also attached to my Mac.  This is a backup from one external hard drive to another external hard drive, both attached to the same Mac.  Want to automatically schedule regular backups that only include changes since last backup.  Interested in hearing from others that regularly perform similar data backups.  What backup software do you recommend?

Lenses / Using EF-S lens on FF body???
« on: May 26, 2011, 05:42:15 PM »
Can you use an EF-S lens on a FF body IF you use Liveview where the mirror is in lockup position?

Do you periodically have your lenses professionally cleaned?  How often?  By Canon, or ?   What was approximate cost per lens?  Do zooms cost more than primes?

Read on Amazon reports of problems with the Canon EF-S 17-55 f/2.8 IS USM due to lack of weather sealing.  Can anyone report having this problems and how serious this may/may not be?  I'm interested in using this lens on my 7D.

Software & Accessories / Lens adapter for Olympus OM to Canon EOS
« on: August 17, 2010, 07:06:46 PM »
I'm interested in possibly using my Olympus OM lenses on my Canon 7D.  My OM lenses include 16mm fisheye, 24mm f/2.8, 50mm f/1.4, 80mm f/4 manual macro, 85mm f/2, and 75-150 f/4 zoom.  All manual focus lenses.

Fotodiox makes a candidate lens adapter....

Fotodiox Pro Lens Mount Adapter with Dandelion AF Focus Confirmation Chip - Olympus OM Zuiko Lens to Canon EOS adapter for Canon 7D (and other EOS bodies)

This adapter is for sale on Amazon for $120.  However, there are no buyer reviews.  Anyone familiar with this adapter that could comment on its quality, or could advise considering some other brand adapter? 


7D video drops frames when played back using on Mac using QuickTime Pro. 

Recorded video with 7D in full auto exposure mode in full HD at 1920x1080 and 30 fps.  Lens IS may have been active, not sure. 

In-camera video playback is smooth, and so is playback on HDTV via the HDMI port.   Playback of *.mov file on Mac using QuickTime Pro drops frames - very jittery.    What's the problem?

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