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08/05/2006 06:16:37 PM · #1 |
If I go from a 6mp DSLR to a 10mp DSLR and use same lenses what difference will the additional pixels mean?
Will I see a difference in the "out of the camera shot" will I be able to "crop closer"....
....anybody???
Thanks,
Kenskid |
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08/05/2006 06:26:11 PM · #2 |
Well, you could crop closer if you have a specific dimension of pixels in mind. For example, you will appear to be able to zoom more on DPC challenges as 640px represents a smaller portion of the original frame.
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08/05/2006 06:28:30 PM · #3 |
It will mean you can print bigger.
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08/05/2006 06:28:33 PM · #4 |
So lets say I take a shot of a Tree with a 50mm lens at 100 yards away....when cropping, I'd be able to crop the 10mp shot closer with no pixelation as compared to the 6mp crop?
Originally posted by DrAchoo:
Well, you could crop closer if you have a specific dimension of pixels in mind. For example, you will appear to be able to zoom more on DPC challenges as 640px represents a smaller portion of the original frame. |
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08/05/2006 06:36:51 PM · #5 |
| 10mp is not a very big jump in resolution over 6mb. Remember to double the resolution of a 6mp sensor requires 24mp not 12mb, so the 10mb is about 20% larger. That is not alot of cropping. |
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08/05/2006 06:41:07 PM · #6 |
The 10mp D200 has image sizes up to 3,872 x 2,592
The 6mp D70 has image sizes up to 3,008 x 2,000
The 12mp D2x has image sizes up to 4,288 x 2,848
Basically it means you have a bigger image to crop 640px from.
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08/05/2006 06:47:04 PM · #7 |
Originally posted by hyperfocal:
10mp is not a very big jump in resolution over 6mb. Remember to double the resolution of a 6mp sensor requires 24mp not 12mb, so the 10mb is about 20% larger. That is not alot of cropping. |
Huh? That would be a quadrupling of the resolution. What your talking about is doubling of each of the length and width of the image. 2x2=4
The 10MP sensor will take an image that is 166 percent of the 6MP resolution, or 66% larger in resolution. A 12 MP sensor would be double the resolution of a 6MP sensor, BUT WOULD NOT RESULT IN AN IMAGE DOUBLE THE LENGTH AND WIDTH. |
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08/07/2006 07:27:39 AM · #8 |
| its about an extra inch in x/y crop.. |
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08/07/2006 07:35:57 AM · #9 |
6Mpx to 24Mpx is a doubling of *linear* resolution. In other words, if you keep the sensor size constant, in order to halve the pixel pitch in both width and height (doubling the resolution in each direction) you'll need 24Mpx. This is what hyperfocal was referring to.
The amount of difference you'll see also depends on what's commonly referred to as the "per pixel sharpness" of each camera.
It also depends on whether the lens in question is sharp enough to be able to handle the smaller pixel pitch of the upgrade. |
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08/07/2006 08:11:55 AM · #10 |
Originally posted by Bobster:
its about an extra inch in x/y crop.. |
If TrynityRose's numbers are correct, it's more like 3" on the long side and 2" on the short. But still... I like your way of thinking about it. The ultimate goal is what size of print you can get out of it.
Using TrinityRose's numbers:
10mp D200 = 3,872 x 2,592 @ 300 dpi = 12.9" x 8.64"
6mp D70 = 3,008 x 2,000 @ 300 dpi = 10" x 6.67"
12mp D2x = 4,288 x 2,848 @ 300 dpi = 14.3" x 9.50"
I've printed at less than 200 dpi and still had it look good, so really the print sizes can be larger than this. But most everything I read points to 300 dpi as being the perfect dpi for printing. But still, I think this is a useful way of looking at just "how little" the extra resolution buys you. Even a doubling of the resolution only buys a few extra inches on each side at 300 dpi. So where's that 24mp sensor?!? :-)
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08/07/2006 08:31:06 AM · #11 |
Having just done this there are a couple of other things as well.
CF cards become very small, D 70=~5MB > D200=~15MB.
Hard drives start to fill very quickly.
Photoshop starts to run a little sluggish.
But the detail is amazing.
13X19 are no sweat, I find even 180 dpi results in little loss in detail.
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08/07/2006 12:35:20 PM · #12 |
Originally posted by jrtodd:
Having just done this there are a couple of other things as well.
CF cards become very small, D 70=~5MB > D200=~15MB.
Hard drives start to fill very quickly.
Photoshop starts to run a little sluggish.
But the detail is amazing.
13X19 are no sweat, I find even 180 dpi results in little loss in detail. |
Lenses become more important. The photosites (pixels) on the sensor are smaller, and can now resolve smaller lines, so good lenses will give better (ie sharper) images. Poor lenses may not show a difference becasue the lens was the problem.
You may notice that some of your lenses that were able to "out resolve" a 6MP sensor have less resolution that a 10MP sensor has (this probably won't happen, there's only about a 20% difference between the two sensors)
Assuming the sensor is 24mm on the wide side,
10mp has 3872 pixels, or 161 pixels/mm
6mp has 3008 pixels, or 125 pixels/mm
consider how this affects the circle of confusion. |
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08/07/2006 01:32:38 PM · #13 |
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08/07/2006 01:36:35 PM · #14 |
Originally posted by BradP:
4 |
Sounds about right to me :-)
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