Canon Speedlite EX600 II- RT ETTL and FEC Test Shots
Nov 7, 2017 10:39:19 #
Here are some test shots taken with my Speedlite on camera with a tripod showing -3 to +3 Flash Exposure Compensation in one stop increments.
These are all taken at the same camera settings and flash in ETTL only change was Flash Exposure Compensation.
SOOC as shot in RAW and output from Lightroom as 100 percent quality JPEG.
Focus is single point in the center of the image.
Even at +3 EV FEC nothing is blown out in the highlights as I view in Lightroom.
More to come...
Best,
Todd Ferguson
These are all taken at the same camera settings and flash in ETTL only change was Flash Exposure Compensation.
SOOC as shot in RAW and output from Lightroom as 100 percent quality JPEG.
Focus is single point in the center of the image.
Even at +3 EV FEC nothing is blown out in the highlights as I view in Lightroom.
More to come...
Best,
Todd Ferguson
Ambient Light Only
(Download)
-3 EV FEC
(Download)
-2 EV FEC
(Download)
-1 EV FEC
(Download)
0 EV FEC
(Download)
+1 EV FEC
(Download)
+2 EV FEC
(Download)
+3 EV FEC
(Download)
Nov 7, 2017 10:45:31 #
Nov 7, 2017 10:49:21 #
TriX wrote:
Surprisingly little difference between +1, +2 and +3.
Yes, I’m surprised by that as well. This is an interesting exercise, Todd.
Nov 7, 2017 10:57:58 #
It may be in part because this flash is Canon's most powerful and has a Guide Number of 60 (meters) at ISO 100. So ISO 160 is decreasing the amount of flash power needed and at this distance about 8-10 feet it is not staining to light the scene. But you would think that it would blow out a little more. I do know from calibrating my camera that I have over 3 stops above middle gray without blowing out highlights. Maybe it is a combo of ETTL and FEC working together which which suppresses the positive FEC. I might need to shoot a series with manual flash set for a proper exposure and then test the -3 to +3 EV FEC.
Best,
Todd Ferguson
Best,
Todd Ferguson
TriX wrote:
Surprisingly little difference between +1, +2 and +3.
Nov 7, 2017 11:03:04 #
Here is the Speedlite test using the ETTL and keeping the ISO and Shutter Speed the same and changing the Aperture in one stop increments.
Same deal as above as far as SOOC and Lightroom, etc.
Canon 24-70 f/2.8 II at 70mm with hood in place.
Best,
Todd Ferguson
Same deal as above as far as SOOC and Lightroom, etc.
Canon 24-70 f/2.8 II at 70mm with hood in place.
Best,
Todd Ferguson
Aperture f2.8
(Download)
Aperture f4
(Download)
Aperture f5.6
(Download)
Aperture f8
(Download)
Aperture f11
(Download)
Aperture f16
(Download)
Nov 7, 2017 11:04:13 #
Curious that +1,+2 and +3 all seem the same. I know you stated all camera settings were the same but was the camera set to manual or was the camera's meter able to compensate?
Nov 7, 2017 11:07:15 #
Camera was set on manual, flash on ETTL.
The flash is set to auto zoom based on the lens focal length, so flash was zoomed to 70mm to match the focal length.
The flash indicated that it can properly expose from .7 to 3 meters at f/16 and .7 to 2.0 to 18 meters at f/2.8.
So the effectiveness of the flash is variable based on the selected aperture which is logical.
Best,
Todd Ferguson
The flash is set to auto zoom based on the lens focal length, so flash was zoomed to 70mm to match the focal length.
The flash indicated that it can properly expose from .7 to 3 meters at f/16 and .7 to 2.0 to 18 meters at f/2.8.
So the effectiveness of the flash is variable based on the selected aperture which is logical.
Best,
Todd Ferguson
Bullfrog Bill wrote:
Curious that +1,+2 and +3 all seem the same. I know you stated all camera settings were the same but was the camera set to manual or was the camera's meter able to compensate?
Nov 7, 2017 11:34:27 #
OK, a few more shots and testing I have figured out why the +1 to +3EV FEC shots look the same. It is because they are all shot at F16. At F16 it is saying ETTL can properly expose up to 3 meters which means my scene is at the limits and it is using full power to get the shot and has nothing left add to overexpose the shot. If I shoot at F4 and F8 I get the overexposures as would be expected because I am not at the end the shooting distance at those Apertures.
Also if I have the flash in manual mode and use FEC it appears to have no effect. I will have to check that out in the manual for the flash and see if that is what they say. I don't recall off hand, but it makes sense on some level like shooting in manual on the camera then EC would have no effect...unless you are also using auto ISO. Then it has a variable it can modify.
Best,
Todd
Also if I have the flash in manual mode and use FEC it appears to have no effect. I will have to check that out in the manual for the flash and see if that is what they say. I don't recall off hand, but it makes sense on some level like shooting in manual on the camera then EC would have no effect...unless you are also using auto ISO. Then it has a variable it can modify.
Best,
Todd
Bullfrog Bill wrote:
Curious that +1,+2 and +3 all seem the same. I know you stated all camera settings were the same but was the camera set to manual or was the camera's meter able to compensate?
Nov 7, 2017 11:45:29 #
Btw, have you noticed that on manual, auto ISO and ETTL that the ISO will always be at 400? At least that’s how it behaves on my Canon. Causes me to turn off auto ISO when using flash.
Nov 7, 2017 11:49:36 #
I have never been an auto ISO shooter but was playing a little with it last night indoors but without flash. I will try that out and see what my Canon does... I could see that they would want to try to keep the ISO as low as possible if using flash and ETTL. What aperture and shutter speed were you shooting at in manual when this happens...or does it matter?
Best,
Todd Ferguson
Best,
Todd Ferguson
TriX wrote:
Btw, have you noticed that on manual, auto ISO and ETTL that the ISO will always be at 400? At least that’s how it behaves on my Canon. Causes me to turn off auto ISO when using flash.
Nov 7, 2017 12:04:40 #
Notorious T.O.D. wrote:
I have never been an auto ISO shooter but was playing a little with it last night indoors but without flash. I will try that out and see what my Canon does... I could see that they would want to try to keep the ISO as low as possible if using flash and ETTL. What aperture and shutter speed were you shooting at in manual when this happens...or does it matter?
Best,
Todd Ferguson
Best,
Todd Ferguson
Didn’t seem to matter. I kept noticing the shots were overexposed, and finally determined it was an interaction between auto ISO and ETTL (at least on my 5D3). I had learned previously to always shoot manual in flash (I usually shoot manually anyway), because in any of the automatic modes, the camera always defaulted to the largest aperture available on the lens which was often not the DOF I had in mind 😲.
Nov 7, 2017 12:34:53 #
I was not even aware the 5D3 did auto ISO. But I have never shot one...never even held one I guess. That sounds a little strange that it would always go wide open on the lens... I will have to try that in a non manual mode. What mode do you suggest?
Best,
Todd Ferguson
Best,
Todd Ferguson
Nov 7, 2017 12:48:22 #
Notorious T.O.D. wrote:
I was not even aware the 5D3 did auto ISO. But I have never shot one...never even held one I guess. That sounds a little strange that it would always go wide open on the lens... I will have to try that in a non manual mode. What mode do you suggest?
Best,
Todd Ferguson
Best,
Todd Ferguson
Todd, I sometimes used to shoot in aperture or shutter priority, depending on the subject, but I’ve largely abandoned that for manual mode and auto ISO, except for flash, where I use full manual. I don’t think I’ve ever shot this camera in P or A (not saying one shouldn’t, just that I don’t).
Nov 7, 2017 12:59:41 #
OK, my camera only has Manual, Shutter Priority, Aperture Priority and Program and Bulb modes. I will give it a try and see what it does on my camera. I am generally shooting Shutter Priority and ETTL/manual multiple flash mix for racing/sports or manual flash for studio work.
The reason it would perhaps go to a wide open aperture in Tv or Program mode that comes to mind would be that would give the greatest flash coverage in ETTL. I will do some tests later...
Best,
Todd Ferguson
The reason it would perhaps go to a wide open aperture in Tv or Program mode that comes to mind would be that would give the greatest flash coverage in ETTL. I will do some tests later...
Best,
Todd Ferguson
TriX wrote:
Todd, I sometimes used to shoot in aperture or shutter priority, depending on the subject, but I’ve largely abandoned that for manual mode and auto ISO, except for flash, where I use full manual. I don’t think I’ve ever shot this camera in P or A (not saying one shouldn’t, just that I don’t).
Nov 7, 2017 19:29:10 #
Notorious T.O.D. wrote:
Here is the Speedlite test using the ETTL and keeping the ISO and Shutter Speed the same and changing the Aperture in one stop increments.
Same deal as above as far as SOOC and Lightroom, etc.
Canon 24-70 f/2.8 II at 70mm with hood in place.
Best,
Todd Ferguson
Same deal as above as far as SOOC and Lightroom, etc.
Canon 24-70 f/2.8 II at 70mm with hood in place.
Best,
Todd Ferguson
Well, that settles that . . .
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