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What is the difference between point 'n' shoot and DSLR? - Page 2

post #11 of 14
Quote:
Originally Posted by sub50hz View Post

Quote:
Originally Posted by Techie007 View Post

    As far as "higher ISO being noisier," I will mention that DSLRs have a larger sensor that simply picks up more photons per pixel due to the larger sensor area.  That increases the camera's sensitivity to light without increasing the amount noise.  Also, cameras that have high sensitivity sensors that can go to higher ISO speeds will generally have clear pictures at lower speeds.  So a camera that can go to ISO 25,600 should have a much better picture at ISO 6,400 (a relatively low setting for that camera) than a camera whose highest setting is ISO 6,400.

Wrong. Noise happens on any camera simply because the nature of achieving greater sensitivity to light is by increasing signal gain off the sensor.

    rolleyes.gif I don't know where you get that, man.  I understand that increasing the gain increases the noise.  But we're not talking about one camera here.  We can choose a camera with a larger or smaller sensor, and I was explaining that a camera with a larger sensor will need less gain (signal amplification) to get the same ISO rating, and will thus have less noise.

I just did a quick Internet search and found these citations:
http://www.vistek.ca/buyingguides/dslrs/advantages.aspx (look at the "Light Sensitivity" section).
http://www.wikihow.com/Avoid-Noise-in-Your-Digital-Photography (a slightly different spin on the subject).
http://www.digitaltrends.com/photography/image-sensor-size-matters/ (read "Sensor size, not megapixels, is what matters").
http://www.kenrockwell.com/nikon/d60.htm (read his review of the reduced light sensitivity due to greater pixel density).
http://www.exposureguide.com/iso-sensitivity.htm (this page just comes out and says what I said).
 
 
Quote:
Originally Posted by sub50hz View Post

You might as well tell that to my old 50D, which went all the way to 12,800, but looked pretty terrible above 2500 -- yet my Xpro @ 6400 looks as good or better than the ol' 50D did at 1600. ISO ceiling is a dumb battle between Nikon and Canon to see who can get the highest available ISO rating and concurrently, the worst SNR possible at said rating.

    rolleyes.gif Wait a minute — you're comparing an old camera to a new camera and that ain't fair!  The original context was buying a new camera.  If the OP wants something that gets great low-light ability, they will have to get a modern camera, and that comparison between your 5 year old Canon EOS 50D and some new camera should be irrelevant because they will only be looking at cameras released within the last year or two.
    Anyway, a newer camera may outperform an older camera with more impressive specs simply because sensor technology has improved so much over the years.  Sensors have been getting more sensitive to light, and they have been improving the SNR in the amplifiers that do the ISO amplification.  In fact, while doing the Internet search that I mentioned above, I came across many headlines that read something like "Graphene Camera Sensors 1000 Times More Sensitive To Light than current technology."  Impressive.  I can hardly wait to see what these cameras can do in low light situations!  However, those cameras will certainly prove my point that "A camera that can go to a higher ISO will shoot a less grainy picture at a lower setting than another camera which tops out at that lower setting."
    Either way, I strongly recommend that anyone shopping for a camera that does well in low-light situations to simply look that the test images that several sites provide for many cameras.  They usually have a side-by-side comparison of any one camera at different ISO speeds.  Judge the graininess for yourself.  Some even have low-light scenes that you can compare the brightness and sharpness of from camera to camera. thumb.gif
 
 
Quote:
Originally Posted by Conspiracy View Post

lol so much fail in this thread. wheres swindle to explain the difference in AWB between P&S and DSLR cameras lachen.gif

    Well, just go ahead and fill in the gaps, sharing what you know, please! smile.gif
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post #12 of 14
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Originally Posted by Techie007 View Post

prove my point that "A camera that can go to a higher ISO will shoot a less grainy picture at a lower setting than another camera which tops out at that lower setting."

Well, let's have a look, shall we?



So, uh, you know. Quit making assumptions without doing the right kind of research.
post #13 of 14
Thread Starter 
Thank you all for your comments. Most of them I couldn't understand. What camera would you suggest for a beginner like me, it should take pics of similar or better quality than Nokia 808, should have rechargeable battery. Maybe around $100-150.

I thought about Canon SX160 IS, but online reviewers wrote it drains batteries quickly and it doesn't shoot good videos.
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post #14 of 14
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Originally Posted by sepiashimmer View Post

Thank you all for your comments. Most of them I couldn't understand. What camera would you suggest for a beginner like me, it should take pics of similar or better quality than Nokia 808, should have rechargeable battery. Maybe around $100-150.

I thought about Canon SX160 IS, but online reviewers wrote it drains batteries quickly and it doesn't shoot good videos.


I can only speak from personal experience. I currently use a Canon SX130IS as my point and shoot, it was more advanced than the previous Canon I had, it is OK at fast moving shots and low light, better than my Samsung Galaxy S3 and the previous point and shoot, I have now had it for about 2 or 3 years and the flaws are slow flash refresh... and well that is all I really found for my uses. The wife loves it as it takes great pictures once you understand how to do it and how to get out of the auto settings into some manual ones (aperture, shutter, iso etc - learning those one by one can help improve basic point and shoot pictures).

 

I love mostly that with 2400mAh rechargeable batteries I can easily take 300-400+ pictures before needing to replace the batteries, this way I can cheaply have several charged and waiting and in a pinch can use off the shelf AA batteries. These version Canon can be found in your price range (I mainly purchased it for those reasons and that it had a nice 12X optical zoom)

 

Now this week I JUST bought a Canon T5i as I was starting to feel restricted in the capabilities of the SX130 but it took a while (although I know some will tell you look at the mirrorless - I looked at those as well and decided to make a long term investment that I could easily see us outgrowing the mirrorless cameras quickly)

    
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