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Unhappy with sharpness
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Jul 3, 2017 07:41:14   #
will47
 
I am very unhappy with the sharpness of this photo. f5.6, ISO500, 1/100, 2x extender on a Canon 70-200mm L series f2.8 lens, tripod was used. Because of the extender and loss of f stops I had to use at least ISO 500. This was the first time I have used the extender. The extender is a EF 2x III. Any suggestions to improve sharpness? Thanks. Camera is a Canon 7D Mark II.


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Jul 3, 2017 07:44:56   #
markngolf (a regular here)
 
Yes. I have same. Your shutter speed is too low. It must be a minimum of 1/focal length. Try same at 1/500. Also check your focus point. Best at precisely bird's eye.
Mark
will47 wrote:
I am very unhappy with the sharpness of this photo. f5.6, ISO500, 1/100, 2x extender on a Canon 70-200mm L series f2.8 lens, tripod was used. Because of the extender and loss of f stops I had to use at least ISO 500. This was the first time I have used the extender. The extender is a EF 2x III. Any suggestions to improve sharpness? Thanks.
Jul 3, 2017 07:49:29   #
berchman
 
will47 wrote:
I am very unhappy with the sharpness of this photo. f5.6, ISO500, 1/100, 2x extender on a Canon 70-200mm L series f2.8 lens, tripod was used. Because of the extender and loss of f stops I had to use at least ISO 500. This was the first time I have used the extender. The extender is a EF 2x III. Any suggestions to improve sharpness? Thanks. Camera is a Canon 7D Mark II.


Could it be that the camera focused on the bars of the feeder? I'm assuming you used a cable release. Perhaps it *is* too low of a shutter speed because of mirror shake unless you raised the mirror.
Jul 3, 2017 07:53:04   #
will47
 
markngolf wrote:
Yes. I have same. Your shutter speed is too low. It must be a minimum of 1/focal length. Try same at 1/500. Also check your focus point. Best at precisely bird's eye.
Mark


Should I then change the ISO to allow a speed of 1/500? Thanks.
Jul 3, 2017 07:55:01   #
will47
 
berchman wrote:
Could it be that the camera focused on the bars of the feeder? I'm assuming you used a cable release. Perhaps it *is* too low of a shutter speed because of mirror shake unless you raised the mirror.


I did not use a shutter release but I did have a tripod. I figured a shutter release cable might be impractical because the were birds. They don't sit still for long periods.
Jul 3, 2017 07:56:49   #
rmalarz (a regular here)
 
Parts of the image are quite sharp. One thing to keep in mind with extenders is that they multiply not only the focal length of the lens, they also multiply any small flaws in the lens by the power. So, any small, and potentially unnoticeable, flaw in the lens when used without the extender may show up with it.
--Bob
will47 wrote:
I am very unhappy with the sharpness of this photo. f5.6, ISO500, 1/100, 2x extender on a Canon 70-200mm L series f2.8 lens, tripod was used. Because of the extender and loss of f stops I had to use at least ISO 500. This was the first time I have used the extender. The extender is a EF 2x III. Any suggestions to improve sharpness? Thanks. Camera is a Canon 7D Mark II.
 
Jul 3, 2017 07:57:42   #
markngolf (a regular here)
 
Yes. Try it and see if the result are satisfactory.
Mark
will47 wrote:
Should I then change the ISO to allow a speed of 1/500? Thanks.
Jul 3, 2017 08:02:08   #
will47
 
markngolf wrote:
Yes. Try it and see if the result are satisfactory.
Mark


Will do and thanks for the help.
Jul 3, 2017 08:19:39   #
markngolf (a regular here)
 
Please post results. Good luck.
Mark
will47 wrote:
Will do and thanks for the help.
Jul 3, 2017 08:32:25   #
SS319 (a regular here)
 
Would it be improper to suggest you lose the extender and try to use a foot zoom? If you couldn't actually get closer, you could have shot at 200mmFL and cropped the image to obtain the same image - difference being that you could have shot at 2.8 with a shutter of 1/100 and an ISO of maybe 200.

I would suggest a remote release for tripod use. We use a tripod to isolate vibration, then when we punch the shutter, we reintroduce that vibration - a release allows us to not touch the setup while releasing the shutter - and if you go to live view, you lock up the mirror and remove that noise as well. I can remote my T6i on my tablet and wirelessly release the shutter from the tablet.
Jul 3, 2017 08:33:49   #
Jolly Roger
 
You didn't mention how many focus points were selected. I usually have centre point - expanded when shooting birds. Focusing on the eye, as mentioned by Mark previously. I have the same body and lens as you but only the 1.4 TC.
Another issue could be if your combo is front or back focusing. Plenty of Tutorials on YouTube to explain and remedy that.
 
Jul 3, 2017 08:42:19   #
ELNikkor (a regular here)
 
Are you using multi-point focus? Go to single point...
Jul 3, 2017 08:46:30   #
will47
 
Jolly Roger wrote:
You didn't mention how many focus points were selected. I usually have centre point - expanded when shooting birds. Focusing on the eye, as mentioned by Mark previously. I have the same body and lens as you but only the 1.4 TC.
Another issue could be if your combo is front or back focusing. Plenty of Tutorials on YouTube to explain and remedy that.


That's another thing I forgot: focus points. I only used one point in center. Thanks for reminding me. Duh
Jul 3, 2017 08:48:20   #
CPR (a regular here)
 
If you can't change the equipment perhaps you could do a little PP. This is just a minute of fiddling with Hi-pass filter.


Jul 3, 2017 08:59:45   #
will47
 
CPR wrote:
If you can't change the equipment perhaps you could do a little PP. This is just a minute of fiddling with Hi-pass filter.


Thanks, another thing I didn't think about. When using the hi pass should I apply other sharpening first or not? Thanks.
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