50mm and 600d soft image ?

Invasion

Invasion

Invasion

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I have just got back into photography with a 600d and a 1.8 prime and I'm finding that most of the time images are soft. Sometimes out of the blue it will turn out a really sharp image and then back to soft ???

Can I have opinions on this image is it soft in your opinion.
large.jpg


Could it be back focusing maybe ? Any advice appreciated :)
 
Invasion said:
Don't seem to be able to here is the exif

Date/Time 15-Feb-2013 12:56:38
Make Canon
Model Canon EOS 600D
Flash Used No
Focal Length 50 mm
Exposure Time 1/40 sec
Aperture f/4.5
ISO Equivalent 800
Click to expand...

Your shutter speed is too low. A common guideline is to keep the shutter speed higher than the focal length you are using, so at least 1/50. I'd recommend at least 1/80 for a 50mm lens on a crop body. As you get better at handholding you'll start to drop the lowest shutter speed that you are comfortable with. For the moment try not to go below 1/60 at all when handheld even if the focal length is below that.
 
Rojin said:
Your shutter speed is too low. A common guideline is to keep the shutter speed higher than the focal length you are using, so at least 1/50. I'd recommend at least 1/80 for a 50mm lens on a crop body. As you get better at handholding you'll start to drop the lowest shutter speed that you are comfortable with. For the moment try not to go below 1/60 at all when handheld even if the focal length is below that.
Click to expand...
I thought it might be giving the crop factor. Ill go and give it another shot and see if it improves ill keep aperture the same and h
Just increase shuttered speed see what it does ill post results in a minute or two
Thanks ;)
 
Ok seems same to me ??
148791857.jpg



Full EXIF Info
Date/Time 15-Feb-2013 14:03:40
Make Canon
Model Canon EOS 600D
Flash Used No
Focal Length 50 mm
Exposure Time 1/77 sec
Aperture f/4.5
ISO Equivalent 800
Exposure Bias
White Balance
Metering Mode
JPEG Quality
Exposure Program
Focus Distance

148792009.jpg



Date/Time 15-Feb-2013 14:21:34
Make Canon
Model Canon EOS 600D
Flash Used No
Focal Length 50 mm
Exposure Time 1/200 sec
Aperture f/4.5
ISO Equivalent 1600
 
Last edited:
your samples are two small to really tell anything, if your really worried about this go outside in some decent light point the camera at a brick wall on a tripod with remote shutter release and mirror lockup. If it can take sharp pictures of the brick wall it's a technique issue if it can't then it or your camera need a tweak.

Shooting handheld portraits in low light is no way to test a lens.
 
As the ISO increases (so you can increase shutter speed) you will get more noise which will reduce finer detail. Do the shots look blurred when viewed full size (100% crops), or is it just that the resized versions you are uploading don't look as sharp as you'd expect in comparison to others? Motion when handholding may still be an issue, or it could be your processing as well? What AF mode are you using? If using AI Servo this can give soft shots at these lower shutter speeds if the lens is buzzing back and forth with AF. Try single shot AF?
 
Also, what point are you focusing on? Are you using single point focus or full auto? It may be selecting a point that isn't the right plane of focus for the shot. Lastly, that lens is pin sharp at f5 but gets quite soft the further away from that you go.
 
As above really. Single shot, single AF point (centre) and go outside.

The first is almost certainly down to a slow shutter speed. The other two don't look as bad, although 1/77 is pushing it really imo.
 
Thanks for everyone's input really appreciated;)

I'm using single point focus on these shots. They look blurred at full size as well and overall just crap. In the last image I posted I had taken the shuttered speed up to 1/200 and still blurred so it can't be the fact it is being handheld can it?

As I said in first post I have got sharp images from it, and the settings are pretty much the same ?? So why is it being so inconsistent ??

This is one of the sharp images 1/60 at F4
www.pbase.com/invasion/image/148811058/original.jpg
 
What ISO is that last one at? It doesn't look like a Canon crop ISO 1600 or even ISO 800 file so I still think it's in camera noise reduction that you just need to turn off or start shooting RAW for.
 
Are you sure you don't mean ISO 200? I may be horribly underestimating the Canon 18MP sensor but that doesn't look like a high ISO crop shot from Canon at all. Again, check your noise reduction settings on the camera if it is ISO 200, as I still think that it's just jpeg processing.
 
Invasion said:
Just checked says ISO-2000 F4 1/80 you did mean this pic
http://www.pbase.com/invasion/image/148811058/original.jpg
Click to expand...

That does look pretty noise free for a iso 2000 pic, as others have said go outside in the daylight set iso @ 100, set camera to raw, shutterspeed minimum 1/200, use a tripod or rest camera on something and use timer, lens to f4 or f5.6. If you dont get a sharp pic using the above then it may be a back focus issue. Edit also take a liveview shot and compare to the viewfinder focused pic.
 
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