Lemming51

some general interpretations of EOS error codes is at https://support.usa.canon.com/kb/index?page=content&id=ART102961 "Err 80: An image or electric control malfunction has been detected." Is not ...

Normal. Won't appear in images printed or posted, only when you review in-camera or in the Canon post-processing software. "AF Point Display" is enabled or disabled in menu "Playback 2", symbol ...

Try them together and you tell us. Should be ok, but older versions of Sigma lenses ("DL" or no "D-" designation) worked with earlier EOS (pre-1997 models) but would fail with "ERR 99" with later ...

From the notes in the instruction manual, I'm guessing the IS in this lens does not have the automatic "tripod" mode that many other L lenses have. This "tripod mode" doesn't turn IS off, but ...

Double-check that you haven't enabled "back-button focus", moving AF activation from the shutter button to the AEL (*) button. C.Fn IV-1, page 257 https://gdlp01.c-wss.com/gds/9/0300004019/03/eos60 ...

All Canon EF, EF-S, EF-M, and RF lenses have electronic connections to the camera to control AF and aperture. I think there are adapters that emulate this connection to mount EF lenses to Sony ...

It means the battery is worn out and will no longer provide adequate power. P. 212 of the 5D II instruction manual.  red, 1 bar = "purchasing a new battery is recommended."

http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/fdeos.htm yes, the FD-EOS Macro converter can be used with any FL/FD mount lens. It's a "macro" converter because it acts ...

What was or is the offer to upgrade?  Guessing a lot more than repair, but should be far less than buying new and might be worthwhile rather than waiting months (years) on end for service.

What's your issue? Canon Refurbs have the same 1 yr warranty as new. If you have a warranty issue, instead of "Canon Sales", "...please visit www.canonusa.com , select the particular product about ...

Hmmmm. Auto-exposure metering sensors are in the pentamirror would be expected to be unaffected by removing the Anti-Alias and InfraRed filters covering the image sensor. Did you (or maybe the ...

The "aperture number" of 7.3 is the number of stops smaller f/13 is compared to f/1.0 SquareRoot(2) ^ "aperture number" = f/#   ("^" means raised to power or exponent) Sqrt(2)^1 = f/1.4 Sqrt(2)^2 = ...

1D mk 2 or 1Ds mk 2 or 5D mk 2 or 7D mk 2 or ...  .  And I'm guessing Sigma 50-500. Regardless, I suspect your "mk 2" has the custom function set to move AF activation away from the shutter button ...

1/125 is still too fast. p. 171 of the 6D instruction manual, p. 245 for the 5DS R: "Using Non-Canon Flash Units ... With large studio flash units, be sure to test the flash synchronization before ...

No. The demonstration in the video is misleading (may or may not be on purpose). Yes, it will AF and it'll appear that you can select the aperture. But the lens will work only at wide open ...

A number of factors that go into why field of view of the zooms aren't matching the prime lenses. (1) The nominal focal length is at infinity focus, and typically +/- about 5%

(a) the first couple indoor pics look to me like it may be slightly back-focusing. Have you tried MicroFocus Adjustment for this lens on your 5D III? (b) the outdoor pics at f/4 exhibit nasty bokeh ...

Obvious answers are the 20Da (2005), 60Da (2012) and Ra (2019), which are "... intended specifically for astrophotography, it is not recommended for standard photography use. If used to photograph ...