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Photo Forum / Digital Photography / DSLR Cameras / October 2006Sony A100 Tests
Hi All, I've uploaded two review articles of the Sony A100 dSLR covering daytime and nighttime image noise and the effectiveness of the built-in anti-shake technology, plus RAW files you can download to look at yourself, if so inclined. The article is at: <http://www.dimagemaker.com/specials/cameras/camtests.php> The next few days I'll be putting up similar tests for the Canon 30D, Panasonic FZ50 and Sony H1. Cheers, Wayne Wayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog http://www.digitalimagemakerworld.com/ Publisher, Experimental Digital Photography http://www.experimentaldigitalphotography.com Coordindinator of Studies, Multimedia and Photomedia, Australian Academy of Design Personal art site http://www.artinyourface.com/ > Hi All, > [quoted text clipped - 19 lines] > of Design > Personal art site http://www.artinyourface.com/ Anyone else have trouble with this file ? File is too short. Tried grabbing it several time. All of them open fine in PS. http://www.dimagemaker.com/specials/cameras/a100/100.ARW >> Hi All, >> [quoted text clipped - 26 lines] > > http://www.dimagemaker.com/specials/cameras/a100/100.ARW Hi Rudy, Yes, there is a problem with that file on the site server. I am reuploading it now. Give it 10 minutes and it should be there. Sorry and thanks for making me aware of the problem, Wayne  SignatureWayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog http://www.digitalimagemakerworld.com/ >>> Hi All, >>> [quoted text clipped - 34 lines] > > Wayne Yup, that did it. Thanks. Off to the hospital for more damned physiotherapy. Meanwhile the light is just PERFECT and I miss it. > Yup, that did it. Thanks. > > Off to the hospital for more damned physiotherapy. Meanwhile the light is > just PERFECT and I miss it. Maybe you could figure a way to shoot whilst on the way or during the physio? Maybe a small compact or tiny video camera and do something different with the results? Hope the physio works, Cheers, Wayne SignatureWayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog http://www.digitalimagemakerworld.com/ > Hi All, > [quoted text clipped - 10 lines] > > Wayne Wayne, I like your night time tests, as they show a lot. But many (all I looked at) of the daytime tests are of complex scenes that hide the noise (e.g. twigs and leaves). Why not shoot the same city scenes for the daytimes shots, so people can better see the noise? I have quantitative noise analysis for a number of digital cameras at: http://www.clarkvision.com/imagedetail/index.html#sensor_analysis Roger > Wayne J. Cosshall > Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ [quoted text clipped - 4 lines] > of Design > Personal art site http://www.artinyourface.com/ > Wayne, > I like your night time tests, as they show a lot. But many (all I looked > at) of the daytime tests are of complex scenes that hide the noise [quoted text clipped - 5 lines] > > Roger Hi Roger, It is a juggling act. I can go and shoot daytimes there too and in fact will from now on. I have had people wanting the complex shots so they can also judge amount of natural softness, etc. And of course I've been criticized by some for doing any of this at all. You can't win. So, I'll shoot the city scene in all new tests and put those up too. Thanks for the useful suggestion. It is easy for me to do if it is helpful. I'll put a link over to your excellent testing work from my camera test page. Cheers, Wayne SignatureWayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog http://www.digitalimagemakerworld.com/ >I've uploaded two review articles of the Sony A100 dSLR covering daytime >and nighttime image noise and the effectiveness of the built-in >anti-shake technology, plus RAW files you can download to look at >yourself, if so inclined. The article is at: ><http://www.dimagemaker.com/specials/cameras/camtests.php> The anti-shake examples interest me. I note you blame mirror slap for the poor results at 1/8, both with and without AS? But results are good at 1/4. How did you quantify the amount of shake? I believe there's an indicator in the viewfinder that tells you when shake is of a correctable level. How many bars was it showing in each case? Were the poor results at 1/8 and good ones at 1/4 repeatable? Thank you. >> I've uploaded two review articles of the Sony A100 dSLR covering daytime >> and nighttime image noise and the effectiveness of the built-in [quoted text clipped - 13 lines] > > Thank you. I must say I don't recall how many bars were showing, I was not paying attention to them. It was my guess that this was mirror slap at that shutter speed based purely on the handling of the camera and observations of other SLRs recently. I could also just have been more shaky for those exposures but I was making an effort to relax into the same position for each shot. This was the only test where I went down so low in shutter speed, not expecting it to be effective at such low shutter speeds (given the focal length). I'll get the camera back off Sony and do some more testing. Cheers, Wayne SignatureWayne J. Cosshall Publisher, The Digital ImageMaker, http://www.dimagemaker.com/ Blog http://www.digitalimagemakerworld.com/ >I must say I don't recall how many bars were showing, I was not paying >attention to them. [quoted text clipped - 8 lines] > >I'll get the camera back off Sony and do some more testing. It does seem odd that mirror slap should be an issue at 1/8 but not at 1/4. I've been playing with a Sony. The viewfinder indication of how much you're shaking- if it doesn't hit full scale, you've theoretically got a good shot - strikes me as potentially very useful. Do cameras with in-lens AS have a similar display? > I've been playing with a Sony. The viewfinder indication of how much > you're shaking- if it doesn't hit full scale, you've theoretically got > a good shot - strikes me as potentially very useful. Do cameras with > in-lens AS have a similar display? No, but you get visual feedback - if you are wobbling too much for correction, the image will 'swim' or jerk around in the finder. Make you seasick too. This is unpleasant to see and tends to produce auto feedback, you immediately try to steady the camera until the IS produces a stable, steady image. David "Laurence Payne" >>I'll get the camera back off Sony and do some more testing. > [quoted text clipped - 5 lines] > a good shot - strikes me as potentially very useful. Do cameras with > in-lens AS have a similar display? I have a sony a100 and that's right there one of my favorite features. Cheers Padu >> I've been playing with a Sony. The viewfinder indication of how much >> you're shaking- if it doesn't hit full scale, you've theoretically got >> a good shot - strikes me as potentially very useful. Do cameras with >> in-lens AS have a similar display? > >I have a sony a100 and that's right there one of my favorite features. The great thing about the Sony system is that you see the indicator right through pressing the button and taking the picture. That's the moment you really NEED to know if you've jerked, and the moment a lens-based system would stop telling you :-( |
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