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Loris Medici
03-25-2009, 05:31 AM
...

well I'd argue that 5 megapixels is not 50% more mainly because its got to be thought of as a square; 3x4 = 12 and 4x5 = 20 but its only an extra pixel even though it seems to be 60% more. So, given that

the 50D yields an image which is 4752 x 3168 and
that the G1 yields one which which is 4000 x 3000


so then printing an image to 300dpi (to pick a figure) would give a print of:

15.8 x 10.56 inches for the 5D and
13.3 x 10 inches for the G1


so if that's 50% bigger to you then we have a different understanding of percent


Well, I assumed G1 was 10Mp, as that's exactly what one would understand from your previous message. If I knew about G1 (that it was a 12Mp camera!) then I wouldn't have said something like that -> victim of misinformation...



well now its my turn to ask ... I don't quite get your point here ;-)

It's simple -> stop whining, buy a G1 and be happy instead. :)

Regards,
Loris.

pellicle
03-25-2009, 06:11 AM
It's simple -> stop whining, buy a G1 and be happy instead. :)


none in the shops here right now, and I'm just wondering if I'll sell my 10D or (since its worth not much) just keep it (what for??)

but yep, thats my direction

tom_micklin
03-25-2009, 06:15 AM
Tom



look again, you'll see Mk II at the end of the 5D in my post ... BH online lists that at US$3499 when I wrote it.

I did see that, but BH quotes that price for the camera plus lens. You said Body Only, which was why I wondered.
Tom

pellicle
03-25-2009, 07:17 AM
Ok


I did see that, but BH quotes that price for the camera plus lens. You said Body Only, which was why I wondered.
Tom

so I looked again and found that I looked at the wrong line ... its indeed US$2,699 body only. I looked quickly and that seemed about the right number 9and I keep needing to check prices in other places as I do not live in USA. I'm Australian and in my money they're nearly $4000 body only (which is still a bit dearer than BH charges). Worse, here in Finland (where I am now) they cost €3200 with the kit lens and over 2700 Euro body only.

but thanks for pointing it out ... I'm now not as scared by the price

(I think I'll still get a Panasonic G1 and retire my 10D though)

sanking
03-25-2009, 03:56 PM
You have to take into account sensor size and the fact that for the same depth of field you are using optimum apertures. I have not tested it but I am fairly confident that my Canon G9 can resolve somewhere around 200 l/mm in the center of the sensor.

But to make a print 12X18 in size you have to blow up that 7mm wide sensor image a lot.

Sandy






Sandy



interesting ... I'll have a peek myself

on another note, I thought I'd laugh myself silly and test my Coolpix 5000 (which is a 5MP digital camera). It has a 7 ~ 21 mm lens which on its 2/3" sensor gives about 28mm effective for 35mm film (gosh I wish we could use angle of view ... instead of all these messy mm bits).

Due to the requirements of lens testing (placing the lens a distance related to its focal length away from the chart) I get whacko results like well over 100lp/mm and nearly into the 200 lp/mm, but when I wack it on a wall that's 5 meters away (about the normal distance for normal indoor wide angle shots and also coincidentally about right for testing my Bessa RF with its 105mm lens) then I get about 5lp/mm in the picture (while the Bessa gets somewhere around 20lp/mm).

Funny stuff lens testing :-) I still reckon we need something more understandable for testing standards (so casual readers can comprehend the specs and relate it to their own pictures).

Don Bryant
03-25-2009, 04:03 PM
You have to take into account sensor size and the fact that for the same depth of field you are using optimum apertures. I have not tested it but I am fairly confident that my Canon G9 can resolve somewhere around 200 l/mm in the center of the sensor.

But to make a print 12X18 in size you have to blow up that 7mm wide sensor image a lot.

Sandy

I wouldn't hesitate to print 12x18 with my G10 (if I could ever get out to use it). I think if you need to interpolate a slight amount, the interpolation feature with ACR seems to work very well.

Don Bryant

sanking
03-25-2009, 07:29 PM
I have made some very nice prints of 12X16" with my G9, with very little interpolation.

Pretty amazing IMO. No, does not compare to Mamiya 7II, but not bad.

Sandy



I wouldn't hesitate to print 12x18 with my G10 (if I could ever get out to use it). I think if you need to interpolate a slight amount, the interpolation feature with ACR seems to work very well.

Don Bryant