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22 July 2012 09:27 |
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| Modernman Photographer This member has been suspended | Hi there,I'm looking for advice on how to obtain good focus on the 500d as I'm having trouble and feel I'm wasting many family memories. Having just come back from holiday Ive looked at some and theyre at first glance ok,but then when you blow up to an acceptable level they become,well,,,waxy, I have tried various methods ,ie plenty light make sure faster than 1/60 to elim camera shake ,focus on the subjects eye with the centre red dot,tried various f stops to alter dof, I dont think it is strictly the camera as I done studio shoot 3 years ago,but Im open to any suggestions. Have used the 18-55 stabilised kit lens and also the 50mm prime f1.8. Anybody advise anything I'd be your friend forever. |
  | 22 July 2012 10:30 |
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| RedChecker Photographer  Location United Kingdom Buckinghamshire Stoke Mandeville | Some assumptions: - You're using RAW (as JPEG can over-soften images) - You're using a low ISO (as high-ISO can cause the DIGIC processor to over-soften to compensate for grain) - You're using the lenses stopped down a stop or two (to eliminate focus AND lens softness issues) My experience with my 1100D is that high-ISO images shot as JPEG can look waxy for the reasons mentioned above. I'd also argue 1/60 isn't fast enough, remember for a start your camera has a 1.6x focal length multiplier factor but in this day and age of pixel peeping the 1/focal-length rule is inadequate IMO. Are your images 'waxy' or simply out of focus? (over processing by the DIGIC looks completely different to being out of focus) |
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| If you can't dazzle 'em with brilliance, baffle 'em with bullshit | ||
| 22 July 2012 10:39 |
| MG Photographer  Location United Kingdom Warwickshire | The below may sound silly to most but just checking.... As a general rule don't shoot slower than your focal length. If youre using a 50mm on a 1.6 crop then don't shoot less than 50x 1.6 = 1/80th. For 100mm shoot at no less than 160th second (100x1.6). Make sure you are pressing shutter half way to get your focus and then all the way to get your shot (sounds obvious to most but its one of the most common mistakes) Make sure that you have your focussing set correctly... ie on centre or balanced Try holding the camera against your body tighter. Try leaning it on your shoulder as though your are leaning a rifle on it. Wait until you hear the beep that its in focus before shooting. Do a few tests with the above and hopefully you'll get to the bottom of it. I'd do these tests in Jpeg first and see if it makes a difference. If it doesn't then try in raw. Finally if you're having no luck, give your camera to someone else and let them try doing a test... just to see if theres any difference in hand shake. Hope these tips help some... |
22 July 2012 10:41 |
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| Modernman Photographer This member has been suspended | Hi Redchecker,I usually down to 100 or 200 ISO as complete sunshine,always jpeg sometimes with RAW,I also try to make image highest size. I will look at the speed issue. ''Are your images 'waxy' or simply out of focus?''I recon out of focus,but how can this be if the camera confirms focus with a beep . Hope Im not speaking too much nonsense here,possibly I could showan example. |
22 July 2012 10:48 |
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| Modernman Photographer This member has been suspended | Thanks MG going to look at the RAW option. |
| 22 July 2012 10:54 |
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| RedChecker Photographer Location United Kingdom Buckinghamshire Stoke Mandeville | Just because the camera beeps doesn't mean something is in focus - it only means the camera THINKS something is in focus (experience has taught me this) If you're hell-bent on pixel peeping I'd go so far as to say double the shutter speed, so for that 50mm lens on your camera take the 1.6x multiplier and then double it just to be safe (so 50 x 1.6 x 2 = 1/160th). One of the well-known glamour photographers on here uses as high an ISO as he can get simply to get his shutter speeds way up into the hundreds, even though he only shoots relatively low focal lengths as he knows this will consistently produce sharp images. |
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| If you can't dazzle 'em with brilliance, baffle 'em with bullshit | ||
22 July 2012 11:03 |
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| Modernman Photographer This member has been suspended | Doesntthat affect the quality though?Red |
| 22 July 2012 11:09 |
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| RedChecker Photographer Location United Kingdom Buckinghamshire Stoke Mandeville | Like I said, he pushes it to as high as he can get away with, but yes there will be increased noise. Shooting RAW would enable him to bypass the DIGIC's softening that is applied to JPGs certainly, but if focus and blur issues are causing grief then that's the way to go IMO. |
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| If you can't dazzle 'em with brilliance, baffle 'em with bullshit | ||
 | 22 July 2012 11:18 |
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| mph Photographer  Location United Kingdom Cheshire Crewe | T R I P O D ?  |
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| Amateur - happy to do TF with models with potential and enthusiasm. Website: www.mphodson.co.uk | ||
22 July 2012 11:21 |
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| Modernman Photographer This member has been suspended | Possibly,MPH,but Im not certain what the problem is yet. Quote from mph,and trying hard not to throw money at it.T R I P O D ? |
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