Question #1 MegaPixels
Jul 17, 2017 06:52:29 #
I have a 36 x 48 canvas taken with a 6MP camera and it looks great. Unless you do a lot of cropping, large MP is not necessary.
Jul 17, 2017 07:08:37 #
selmslie wrote:
Because what you said is irrelevant when you don't take into account viewing distance.
Put your calculator down and use some common sense.
Put your calculator down and use some common sense.
There is no printer available that prints at 80 PPI. Not one.
Do use common sense!
Jul 17, 2017 07:21:44 #
Will a higher mega pixel camera give better results when cropping the picture? In other words being able to crop more without loosing detail?
Jul 17, 2017 07:27:36 #
Kites wrote:
Will a higher mega pixel camera give better results when cropping the picture? In other words being able to crop more without loosing detail?
Yes.
Jul 17, 2017 07:28:01 #
Kites wrote:
Will a higher mega pixel camera give better results when cropping the picture? In other words being able to crop more without loosing detail?
Yes to better results, not best results.
It is even better to avoid excess cropping by using your feet and the right lens to get the image you want in the viewfinder before pressing the shutter button.
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Jul 17, 2017 07:31:09 #
Jul 17, 2017 07:38:45 #
Kites wrote:
Thanks. I just wanted to know. I do my composing with the lens as much as possible.
Understand that using your feet changes the perspective. Changing focal length is what changes framing. Cropping changes the resolution if blown up to the same size.
Each has its place and effects on composition, but each are different
Jul 17, 2017 07:42:42 #
BobU
Loc: Sarasota Florida
The higher megapixel cameras allow you to crop your image down to a smaller portion of the entire frame, while still preserving a high enough pixel density to give an acceptable print.
If you use the total sensor size in the calculation of acceptable print size, it will only apply if you compose in the frame when taking the picture and print without cropping the image. If your images contain a lot of detail, having a high pixel density will give you more flexibility.
If you use the total sensor size in the calculation of acceptable print size, it will only apply if you compose in the frame when taking the picture and print without cropping the image. If your images contain a lot of detail, having a high pixel density will give you more flexibility.
Jul 17, 2017 08:11:13 #
BobU wrote:
The higher megapixel cameras allow you to crop your image down to a smaller portion of the entire frame, while still preserving a high enough pixel density to give an acceptable print.
If you use the total sensor size in the calculation of acceptable print size, it will only apply if you compose in the frame when taking the picture and print without cropping the image. If your images contain a lot of detail, having a high pixel density will give you more flexibility.
If you use the total sensor size in the calculation of acceptable print size, it will only apply if you compose in the frame when taking the picture and print without cropping the image. If your images contain a lot of detail, having a high pixel density will give you more flexibility.
That is one of the advantages of say a Nikon D7200, with sensor resolution of 128 lp/mm, over a Nikon D810 with a sensor resolution of only 103 lp/mm. The D810 is better until the longest focal length lens does not put as many pixels on the subject. For wildlife photography that is not uncommon and is a reason to use an APS-C sensor.
Jul 17, 2017 08:51:35 #
Apaflo wrote:
There is no printer available that prints at 80 PPI. Not one.
Do use common sense!
Do use common sense!
Did I say that that? Don't make things up. Just try to understand what I wrote.
The point that Gene51 made is correct and clear to everyone else.
Whatever else happens between an image and the printer, you only need about 300 dpi resolution if you are going to look at a print from about 10 inches. At 20 inches, 150 dpi is sufficient. At 40 inches, 75 dpi is plenty. It's a simple matter of visual acuity. The eye can only resolve a limited arc.
That's why you need less than 10 MP to make any image that is going to be viewed from a normal viewing distance.
If you had any common sense you would not be arguing this.
Jul 17, 2017 08:54:45 #
I've been told by people who are supposed to know these things that not all pixels are created equal. There is no standard for what a pixel must be nor how much info it must contain. Therefore, simply comparing quantity of pixels isn't a good measure. Those same people stated that older DSLR's had larger and better pixels than current ones - except for pro versions. What I've never been able to figure out is how can I find out the size of the pixels in the camera that's in my hand?
Now before you all start the attack on these statements, I'm quoting from information learned some years back and I have no idea the names of any of these people - just that they were put up as being people who know these things.
Now before you all start the attack on these statements, I'm quoting from information learned some years back and I have no idea the names of any of these people - just that they were put up as being people who know these things.
Jul 17, 2017 08:58:08 #
AzPicLady wrote:
I've been told by people who are supposed to know ... (show quote)
I would think that dividing the area of the sensor by the number of pixels would give you their size.
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Jul 17, 2017 08:58:22 #
jerryc41 wrote:
Thank you for the links. It was helpful.
Jul 17, 2017 09:06:12 #
selmslie wrote:
Did I say that that? Don't make things up. Just ... (show quote)
Your printer prints at 300 PPI. Not 80.
Jul 17, 2017 09:21:19 #
Apaflo wrote:
Your printer prints at 300 PPI. Not 80.
I believe what he is saying is that your input to the printer only needs to be 80 ppi. Many people interchange dpi and ppi, even in major publications.
By nit picking, you are not helping the conversation. We all know how smart you think you are. No need to constantly try to reinforce it. Most have already developed their opinion.
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