Posted: Tue Apr 12, 2005 7:15 am Post subject: Quick question on resampling
I take digital images in RAW format, usually quite large, and then open and save the image as a large format Tiff file. At that point, I have to resize the image for the purpose at hand. Here goes...
I normally take the image down to roughly 4x6 inches (I keep the "Constrain Proportions" box checked) and desire a final resolution of 300dpi. Because I'm starting with a much larger image also at 300dpi or higher, this isn't a problem. However, I'm unsure about the "resample image" box.
My question is, should I check this box? I'm going to insert my desired resolution dpi regardless, so is it necessary to check the box or should I leave it unchecked? I'm starting to think that the purpose of leaving it checked is to perform roughly the same function as the "constrain proportions" box - to allow the software to automatically resample the image based on the resizing I do. But again, I have a particular resolution in mind and so I'm wondering if it's okay to just uncheck the box and insert my desired resolution.
Thanks in advance. This is probably a silly question but I did want to try and get a definitive answer on it. Thanks.
From the way I understand your question, you HAVE to check the Resample box.
When you resample an image, you are changing the number of pixels making up the photo. For example, if you have an image, say 12” X 8” at 300 ppi, and you reduce the size to 6” X 4” at the same resolution you are throwing out pixels. If you didn’t have the Resample box checked, the resolution in this example would shoot up to 600 ppi.
But keep in mind, if you down sample (throwing out pixels) you cannot get that information back, it’s gone for good.
Thanks. Yes, I know that once I toss it out, I'll play upsampling! But if I needed a larger size I'd just go back to my original copy and get it from that. Thanks.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum
