Why does my D7000 pictures turn grainy when I resize them in Photoshop?

I'm a blogger and I take tons of product pictures. In the viewfinder and in the computer at full size, it shows an amazing quality picture.

But when I resize it in Photoshop, it turns kind of "grainy" looking, even if constrain proportions is checked. It kind of looks like everything is packed together and it just looks too sharp somehow.

Welcome to the forum,new to PP but i would have thought a sample picture and an explanation of how you re size would help,remember you have the advantage of having viewed the images.

Can you post an example?

Welcome to the forum! When you save are you sure it's at the resolution you want? I've made the same mistake before as well. Please post an example as Mfrankfort suggested.

Would need to see an example of before and after. There are several resizing algorithms and PS has notes next to those which are more appropriate for sizing up and sizing down. If you can, grab a screen shot of what the option box looks like when you do. It's possible that you need to change some other parameters as well. If you're also messing with resolution then you could be packing too many pixels in a small space.

And just curious, but are you seeing this in the final jpeg or on the screen? If it's immediately after the resize on your screen, hit ctrl/command-1 to display the image full size on your screen. When PS resizes it will display the image in the relative size to the resize on your screen (i.e. if you go to 1/4 size it will display at 1/4 the size of the previous display window), which can look bad at first, but is not reflective of what the image actually looks like.

I think it's in the resize options within PS. When you resize to smaller, there are options in the bottom of the resizing pop-up, just make sure you use the one that says "better for size reduction" and it should be OK. I remember at one point switching PS version and getting the grainy effect you are writing about.

Welcome to Nikonites.

On elements 11 its the bottom one and it says Bicubic sharper (best for reduction)

I never use bicubic sharper when resizing. I resize the photo, then apply my own sharpening. And I never save a psd file with sharpening applied. This way I can come back later and modify the photo without worrying about sharpening artifacts.

nmccamy said:

I never use bicubic sharper when resizing. I resize the photo, then apply my own sharpening. And I never save a psd file with sharpening applied. This way I can come back later and modify the photo without worrying about sharpening artifacts.

Click to expand...

My original PS file is always saved full size unsharpened. The resizing is only for web jpeg versions to be posted here.

I also save my psd files full size, no sharpening. And I use levels so I can "undo" any processing I have applied and saved with the file.

If it is only resizing (shrinking or enlarging), I would advise you to consider the specialized tools like Zoom pro (it works both ways - as a standalone program and as a photoshop's plugin/addon). Variety of options in the picture quality section, so you just cannot miss... http://goo.gl/UTXtbX