A77: What gives?
- Thread starter Pinchbeck
- Start date
That's when I'll hoot one !
...unless a NEX-7 gets to me first. Wanna make a bet ? ...even if Sony release A7x with the 16mp 5N sensor, the detractors will somehow find something 'wrong' with it !!! ...the world is full of sour grapes ! ...so lets enjoy our wines !
Actually DPreview rating of 81% is already the highest score for that category. I wonder why still there are so much rants.
tomcat
Senior Member
Though it scored a high 81%, dpreview gave the A77 only Silver Award because they say the OOC jpegs are too mushy ie too aggressive noise reduction. But they say the RAW is noisy... guess the A77 just can't win any respect either way.
While I do agree that the noise reduction is quite aggressive in high ISO low light shots, they still look very good if viewed at reduced size on the LCD screen and not at 100% size. This makes me suspect that if the 24M file size of the A77 is shrinked to the equivalent 16M size of the NEX-5N, the image quality might not really lose out to that of the NEX-5N at all.
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"Megapixels need to match sensor size"? Care to elaborate? There is no correlation between sensor size and MP, it all depends on process technology and image quality compromise.
Though it scored a high 81%, dpreview gave the A77 only Silver Award because they say the OCC jpegs are too mushy ie too aggressive noise reduction. But they say the RAW is noisy... guess the A77 just can't win any respect either way.
While I do agree that the noise reduction is quite aggressive in high ISO low light shots, they still look very good if viewed at reduced size on the LCD screen and not at 100% size. This makes me suspect that if the 24M file size of the A77 is shrinked to the equivalent 16M size of the NEX-5N, the image quality might not really lose out to that of the NEX-5N at all.
Yeah, they reduced the size and they looked comparable.
The ISO noise in RAW is very fine grain, which cleans up easily and maintains detail. Don't forget, when resized, most of it will disappear. And if you are going to use the 24MP for a large print, grain is GOOD. Many people ADD NOISE when preparing an image for print.
albertri
Senior Member
I agree with Rashkae only technology will limit how much you can pack to a tiny sensor. Ever wonder how they do it for those point and shoot cam?? thier sensor are even smaller and yet they could pack a lot for the size. But on the flip side the lens willneed to evolve also . I've read this article once and this I think the basis why some brands almost stop moving forward on the megapixel race
those wants to go crazy with sensor resolution and lens limitation go crazy and read the below article =)
Do Sensors
let me quote the conclusion
"Conclusions
So, do sensors outresolve lenses? It depends on the lens you use, the properties of the light, the aperture and the format. Small format sensors may have surpassed the limit, this is, in most cases they are lens-limited in terms of resolution. It is easier to correct aberrations for a smaller light circle though, so you can approach diffraction-limited resolutions for lower f-numbers. The signal-to-noise ratio, however, imposes an inflexible limit to the effective resolution of the whole system, mostly due to photon shot noise.
Sensors for larger formats are approaching the diffraction limit of real lenses, and it is more difficult to get high levels of aberration suppression for them. The point is that you cannot fully exploit the resolution potential of high-resolution sensors with regular mass-produced lenses, particularly for larger formats.
You cannot compare the limits of two different photographic systems looking at a print because the variables that determine the subjective perception come into play. Different systems can provide comparable results on paper under certain conditions (the circle of confusion reasoning explains how that is possible), but the limit of a system must be evaluated considering the pixel as the minimum circle of confusion."
rasdeep
New Member
Also dont forget it works both ways, the "bad" pixels can disappear but so can the "good" pixels so there is no win situation here
Also, not getting you when you said people "ADD NOISE" when preparing an image which is confusing as adding noise in the digital domain is not something simple to do.. One can lose details by choosing the wrong compression or format so maybe that is what you meant?
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greenieadi
Member
I think he meant is if someone wants to PRINT those images. I guess not many photographers print to hardcopy nowadays.
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I specifically mentioned "for a large print". You know, printing?
And it's VERY EASY to do.
what did the rumor meant by "both camera" and "release 2.0" refers to firmware 2.0?
There are alot of things that will affect noise level.
Traditionally, there will be more noise the more pixels a sensor of a certain size contains, this can be attributed to heat, interference etc. All things being equal, if you have a 24 megapixel sensor and a 16 megapixel sensor of the same size and technology, the 16 should have less noise at higher ISOs.
Moving up to full frames and medium format sensors should in theory allow for more pixels with less noise.
Not sure if I got that right?
Traditionally, there will be more noise the more pixels a sensor of a certain size contains, this can be attributed to heat, interference etc. All things being equal, if you have a 24 megapixel sensor and a 16 megapixel sensor of the same size and technology, the 16 should have less noise at higher ISOs.
Moving up to full frames and medium format sensors should in theory allow for more pixels with less noise.
Not sure if I got that right?
Ghostfit said:
I ain't some canikon fanboy. I've been using Sony for 4 years and never once think of using other brands. Anyways I'm just saying what I feel and this is free forum where you let out thoughts about current equipment. I never tried it on a full day basis. But I'm a alpha fanboy and will stay that way. For now.
Not sure how accurate this is but I think it has been said that the production A-77 is using a newer generation of the Bionz processor, but they loaded it with firmware for the older generation processor and that is why some people are experiencing problems.
I thought they fixed it with the 1.03 firmware but rumor sites have mentioned a version 2 firmware that will improve the performance of the camera.
A77 and A65.
Yes, 2.0 refers to a firmware with version 2.0 that should be out end of november.
rasdeep
New Member
Im still not getting ya, are you printing football field size print? lol
24mp is good for 40" x 26" @ 150dpi and can even go bigger if needed
usually adding noise is for small resolution images printing large prints cos enlarging caused artifacts, so adding noise can mask off the artifacts.
you actually print larger than 40" x 26"?
rasdeep
New Member
Not sure what you are trying to prove here by posting an ISO50 image and expect noise?
why not post a ISO6400 pic @ 100% crop and we go from there
nice macro shot btw
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