Welcome to Nikonians! It can't be done using in camera settings. Your best bet would be to shoot at full resolution and adjust the image resolution in PP using image editing software. Good Luck and Enjoy your Nikons!
Well I want to take equal MegaPix stills and do some post on them. MEMcD you say that I should shoot at full and the do some PP. Sorry, I do not understand PP? is it post production? In post can I resample the 14MP image to a 10MP one?
Basically with equal settings and the both cams at the same location I want pixel to pixel identical stills. I wonder if this could be possible?
>Not realistically. You could crop away the extra 4 >megapixels, but then your field of view won't be exactly the >same. > >You can resample down to 10mp, but then the resolution won't >be the same, and while the results may look the same, they >won't be. > >What problem are you trying to solve?
Thanks blw, I have to take stills of an object with the 2 cams from different angles and do post on these images. But the problem is that both the cams have different megapix, so I'm unable to find a way through. Someone suggested me to adjust different zoom levels on the cams and then crop them out as you have said. Don't know how accurate would that be though?
If I understand your problem, you will need to find out how much you need to zoom out on the D3100 to get the same cropped 10 MP scene as the D3000.
To start with the D3100 is 14.2 MP, the D3000 is 10.2 MP.
So your D3100 picture will need to be 14.2/10.2 x bigger so you need to zoom out with the lens.
To be more precise, the longest side of your D3100 picture needs to be (square root (14.2/10.2) = 1.18 x) longer than the longest side of the D3000 picture. So if the subject you are viewing through the D3000 viewfinder takes up 12 inches on your longest side at the subject distance, then you will need to zoom out so that your D3100 can see 14.16 inches at the subject distance.
So when you crop the 14.2 MP picture to 10.2 MP, you should get the same sized picture with the same number of pixels.
>Thanks blw, I have to take stills of an object with the 2 cams >from different angles and do post on these images. >But the problem is that both the cams have different megapix, >so I'm unable to find a way through.
I'm not sure I understand this either - why do the images from the two cameras need to have the same number of pixels? What are you doing with the images during and after postprocessing?
Are you trying to capture stereo images? If your subject is static, simply move your camera and capture an image from each position. If your subject is moving you would be better served by purchasing another D3000 or D3100 and a lens to match the one you will be using. Even using two identical cameras and lenses getting the images to match perfectly at the pixel level will be extremely difficult at best. Good Luck and Enjoy your Nikons!
I still don't understand the problem very well, but I think what I'd do is simply interpolate the 14mp down to 10mp (more specifically to the pixel sie of the 10mp image) and be done with it at that. It won't match pixel for pixel, but they're from different angles so that shouldn't matter.
In Photoshop, this means open the image, Image -> Image Size, fill in the long size of the smaller image, set the interpolation method to bicubic sharper (for reducing the image size) and apply.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!