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The A57 will be the low resolution SLT camera many have been asking for...
- Thread starter mike_2008
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- sony slt-a57 sony slt-a77
http://www.dpreview.com/reviews/sonyslta65/8 contains the information you need, but in summary unless you're going to Vietnam to shoot fast-moving sports it's unlikely to make a difference, and even then the difference would be marginal.
PierreChris
Senior Member
There will be a big difference in Noise, I hope....
Well that's the fun part. When the A77 was released we saw many comments (many from yourself, as I recall) on the theme of, if only the A77 used the 16MP sensor it would have been great!
Well now we'll see if this is true. I wouldn't be surprised to see an advantage at high iso even at the image level, but I doubt that the difference is of significant consequence.
Time will tell!
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IQ is not judged exclusively by high iso noise performance
I doubt it will be an significant improvement. And if there is, it is maybe because Sony had some time to tweak the sensor further. On pixel level there now is a difference, but not so on image level. Both serve their purpose well.
tbcass
Forum Pro
If it uses the same 16mp sensor as the NEX5N/A55 (as I suspect it will) we already know the answer to that one. The question is what features of the A65/77 will be implemented on the camera. I think you may be a little too hung up on IQ and not enough on the camera as a whole. My wish was that the A65 have the 16mp sensor because I didn't need 24mp but now that I own one I've changed my mind. I like the 24mp sensor better than the 16.
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Tom
Look at the picture, not the pixels
http://www.flickr.com/photos/63683676@N07/
http://www.flickr.com/photos/25301400@N00/
tbcass
Forum Pro
Not likely at all. Look at A55 vs A65. I own both and there is little difference in noise. So little in fact that it's a non issue.
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Tom
Look at the picture, not the pixels
http://www.flickr.com/photos/63683676@N07/
http://www.flickr.com/photos/25301400@N00/
fjbyrne
Veteran Member
I think a 16MP sensor in the A77 body would be great. Putting the whole noise thing aside the 16MP vs 24MP would mean longer bursts for the 16MP (assuming the same buffer sizes, etc).
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Rick
http://www.flickr.com/photos/fjbphotos/
C
cgarrard
Guest
"A77 performs just as good if you down sample it's files to the A57's or if you up sample the A57's to the A77's."
Not a very interesting conversation if you ask me.
C
http://photographic-central.blogspot.com/
"Nothing can stop the man with the right mental attitude; nothing can help the man with wrong one."
-Thomas Jefferson
Not a very interesting conversation if you ask me.
C
http://photographic-central.blogspot.com/
"Nothing can stop the man with the right mental attitude; nothing can help the man with wrong one."
-Thomas Jefferson
You mean, like, by printing?
Kind of a funny comment anyway when I specifically indicated in the OP comparing both pixel and image level noise.
You know I don't think anyone did.
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IQ is not judged exclusively by high iso noise performance
reflected_light
Forum Enthusiast
I tried printing pictures of the pixels. Really boring..all those little squares.
The images my a77 spits out, on the other hand, are really nice to look at.
I tried taking pictures in the dark too and I thought the noise that was added by the high ISO needed added some character to what otherwise what kinda....well, dark and boring. Kinda like the old film grain I used to try to attain by pushing the ISO with my 35mm..er.
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r_l
http://www.pbase.com/reflectedlight
The images my a77 spits out, on the other hand, are really nice to look at.
I tried taking pictures in the dark too and I thought the noise that was added by the high ISO needed added some character to what otherwise what kinda....well, dark and boring. Kinda like the old film grain I used to try to attain by pushing the ISO with my 35mm..er.
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r_l
http://www.pbase.com/reflectedlight
Frenske
Senior Member
What about dynamic range. Bigger pixels usually equates to better dynamic range if all other things are equal.
The dynamic range seems always a left out of the discussion regarding MP vs Noise. Personally I rarely venture in the ISO1600+ range and I shoot more city/landscape where dynamic range is more important than noise.
reflected_light
Forum Enthusiast
Me too....
So much talk about low light performance/high iso noise levels. While it is surely important to some shooters, it's not necessarily the holy grail factor for everyone who takes pictures.
Not everyone buys the fastest car just because it's faster.
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r_l
http://www.pbase.com/reflectedlight
So much talk about low light performance/high iso noise levels. While it is surely important to some shooters, it's not necessarily the holy grail factor for everyone who takes pictures.
Not everyone buys the fastest car just because it's faster.
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r_l
http://www.pbase.com/reflectedlight
tbcass
Forum Pro
Are you sure about that?
According to DPR in their A77 review "Total dynamic range is almost 9EV, which is about as good as things get from the current crop of APS-C and full-frame DSLRs. It is no surprise to note that the A77's dynamic range curve exactly overlays that of the Alpha NEX-5N, since Sony uses the same tone curve across its entire Apha range of cameras."
So I think your theory about bigger pixels = more DR seems to flawed to say the least.
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Tom
Look at the picture, not the pixels
http://www.flickr.com/photos/63683676@N07/
http://www.flickr.com/photos/25301400@N00/
tbcass
Forum Pro
Where did that quote come from? It's an impossible comparison since the A57 doesn't exist. If you substitute A55 for A57 from my experience with the A65 vs A55 (I own both) down sampled images from the A65 = the A55 while upsampled images from the A55 are inferior to the A65.
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Tom
Look at the picture, not the pixels
http://www.flickr.com/photos/63683676@N07/
http://www.flickr.com/photos/25301400@N00/
Frenske
Senior Member
Very odd! From the very same DPR dynamic range comparison graphs, I conclude that the NEX 5N has 1EV more headroom in the highlights. I admit that probably partially of that (0.5EV) might be due to lack of mirror in the camera.
DxOMark also gives the NEX 5N better scores regarding DR.
http://frenske.zenfolio.com
DxOMark also gives the NEX 5N better scores regarding DR.
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http://frenske.zenfolio.com
The A77 gets a higher DR score than the nex 5n on dxomark, for what it's worth. 13.2 EV for the A77 and 12.7 for the A77.
These tiny differences don't mean anything imo. I know many get excited here, but in the real world this kind of stuff is irrelevant compared with good exposure, good focus and good composition, all of which are easier, imho, with an A77 than a nex 5n.
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IQ is not judged exclusively by high iso noise performance
C
cgarrard
Guest
You know what I meant. It'll be a firestorm of conversation like it has been in the past, stop playing possum Mike.
Doesnt' matter. I'm referring to the conversations- its a set up for a big 150 post thread when it gets announced and nothing will be resolved here on the forums either. And since Sony won't show the numbers of cameras they sell we'll never know if the A57 is more popular as a result, either. Hence my comment.
You're right, that's why I said "if". And fortunately this is an open forum- meaning people can come here and post messages, with or without consent - from you or anyone else.
That's why they call it a Forum Mike.
Carl
http://photographic-central.blogspot.com/
"Nothing can stop the man with the right mental attitude; nothing can help the man with wrong one."
-Thomas Jefferson
C
cgarrard
Guest
It came from the future Tom. Marty McFly hooked me up.
Carl
http://photographic-central.blogspot.com/
"Nothing can stop the man with the right mental attitude; nothing can help the man with wrong one."
-Thomas Jefferson
Carl
http://photographic-central.blogspot.com/
"Nothing can stop the man with the right mental attitude; nothing can help the man with wrong one."
-Thomas Jefferson
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