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After many comparaisons, I think there is no difference in quality
beetween the 2048 jpeg and 2048 tiff pictures taken by the sony dsc s70.
And even in dark shots or action shots, I see, with a 600 % zoom the same
compression !
Has anyone an explication ?
thank you,
ugo
Com'on guys! Do you really think your eye can differentiate color (255, 255, 255) from color (254, 254, 254)?It seems he is correct. I verified it with a shot of an old motherboard
and indeed there were no differences visible
(600% magnification) between TIF and JPG.
Then i made the crosscheck with the CP990 and i see the differences
between "Hi" and "NORMAL".
So my conclusion would be, that the firmware only convert it from
JPG to TIF as you mentioned before.
Best regards,
Com'on guys! Do you really think your eye can differentiate color (255,It seems he is correct. I verified it with a shot of an old motherboard
and indeed there were no differences visible
(600% magnification) between TIF and JPG.
Then i made the crosscheck with the CP990 and i see the differences
between "Hi" and "NORMAL".
So my conclusion would be, that the firmware only convert it from
JPG to TIF as you mentioned before.
Best regards,
255, 255) from color (254, 254, 254)?
Using JPEG compresssion ratio of 6 for S70, it's really hard for naked
eyes to tell the difference. However, I did a simple and easy test. Save
both Jpg and Tif files to bitmap files and compare the binary data of the
pixels. The result is the two bitmap files are very different although
your eye can not tell the diference easily.
Save CCD raw image into TIFF is very stright foreward and much easier
than convert JPG to TIFF.
Foxbat
Of course not.Com'on guys! Do you really think your eye can differentiate color (255,
255, 255) from color (254, 254, 254)?
You might be true. But if there are no visible differences betweenUsing JPEG compresssion ratio of 6 for S70, it's really hard for > naked
eyes to tell the difference. However, I did a simple and easy > test. Save
both Jpg and Tif files to bitmap files and compare the binary > data of the
pixels. The result is the two bitmap files are very different > although
your eye can not tell the diference easily.
Save CCD raw image into TIFF is very stright foreward and much > easier
than convert JPG to TIFF.
This topic has been discussed many times here. If S70 or F505v does not offer TIFF support, many people may cry out loud and refuse to buy the camera.You might be true. But if there are no visible differences between
those two modes, it doesn't make great sense to me?
Well,This topic has been discussed many times here. If S70 or F505v does notYou might be true. But if there are no visible differences between
those two modes, it doesn't make great sense to me?
offer TIFF support, many people may cry out loud and refuse to buy the
camera.
Foxbat
"Normal" mode on CP990 uses more compression than S70/505v. It's "Fine" mode should equal to what S70/505v offers.So a kind of fake mode. Well, for me no problem the JPG of the F505V is
just okay for me.
Regarding the visibility, with a magnification of 1200% (smile) you
really see
differences between "Normal" and "TIF" with CP990.
I think it's great. I hate to see any jpeg artifacts.If you recall Phil's review of the S70 he states:
"As you can see from the top two samples that JPEG mode is almost
indistinguishable from TIFF"
He also suggests that Sony should have included a more aggressive
compression setting.
My personal experience after critical examination of S70 images is that
there are no visible artifacts at normal magnification for 2048X1536,
1600X1200 and 1280X960 resolution settings. The 640X480 images do
exhibit artifacts of the compression process.
I find this ideal for my purposes.
What’s you opinion ?
Well i think i will verify this"Normal" mode on CP990 uses more compression than S70/505v. It's "Fine"So a kind of fake mode. Well, for me no problem the JPG of the F505V is
just okay for me.
Regarding the visibility, with a magnification of 1200% (smile) you
really see
differences between "Normal" and "TIF" with CP990.
mode should equal to what S70/505v offers.
Foxbat
Hi,After many comparaisons, I think there is no difference in quality
beetween the 2048 jpeg and 2048 tiff pictures taken by the sony dsc s70.
And even in dark shots or action shots, I see, with a 600 % zoom the same
compression !
Has anyone an explication ?
thank you,
ugo
This topic has been discussed many times here. If S70 or F505v does notYou might be true. But if there are no visible differences between
those two modes, it doesn't make great sense to me?
offer TIFF support, many people may cry out loud and refuse to buy the
camera.
Foxbat
If you recall Phil's review of the S70 he states:
"As you can see from the top two samples that JPEG mode is almost
indistinguishable from TIFF"
He also suggests that Sony should have included a more aggressive
compression setting.
My personal experience after critical examination of S70 images is that
there are no visible artifacts at normal magnification for 2048X1536,
1600X1200 and 1280X960 resolution settings. The 640X480 images do
exhibit artifacts of the compression process.
I find this ideal for my purposes.
What’s you opinion ?
