jpeg sizes

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abby
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jpeg sizes

Postby abby » Tue Oct 03, 2006 8:27 pm

Hi, I have some really beautiful pictures I took this weekend and would like to post them on the contributors forum, but my kb sizes are all in the 600's and 700's and I didn't dare to try to post them because I had read somehwere not to post them if they were over 250.

Is there any way I can post them for others to view? I just emailed them directly to PWT for him to view and asked him if there was any way they could be put on the forum. (Gosh, I know how busy he must be right now, I hate to burden him if it's a stupid request) I just don't understand all of the "lingo" that goes along w digital photography and I would like to learn.

I am so proud of the pics that I took. I wish you all could see them and maybe even give me some pointers of how I could have set them up differently etc. This is turning into a new hobby for me and I am really excited about it.

So, if you or anyone could help me out with my request to get some of these pics posted, I would greatly appreciate it.

Thanks for the great forum!!!!! Abby


Andy
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Re: jpeg sizes

Postby Andy » Wed Oct 04, 2006 8:06 am

Hi Abby: What kind of computer software do you use to download the photos on to your computer? Do you do any processing of them afterward?

Part of the issue with size may be the resolution. On a computer monitor 72ppi (pixels per inch) is about the max that you can "see" (you can still see them at higher resolution, but there is no improvement in how they look). Said another way, 72ppi is the max most monitors can display (this may have crept upward slightly with the advent of the newer, hi-resolulion monitors -- but this is the conventional wisdom).

In your sofware, there should be an image size option. In that dialog, you should have choices for ppi (often expressed as dpi, which is techically not right for on screen viewing, but for our purposes, doesn't really matter). That should be set to 72. You should also have options for width and height. If you set the the long dimension between 600 and 640 pixels (depending on whether your shot is a horizontal or vertical -- or landscape or portrait, if you prefer), and watch the box which gives you the file size, it should change to around 250k or less. The other dimension will normally change automatically to keep the proportions. Do that with each photo. That should size them to upload (4x6 is about 450 x 600 pixels and should be less than the 250k limit.

Hope that helps.

BTW, pbpub might correct me here. I believe this is his area of expertise.
Andy

If it sounds too good to be true, its probably . . . .

Heather Forcier
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Re: jpeg sizes

Postby Heather Forcier » Wed Oct 04, 2006 8:39 am

Actually, resolution / dpi / ppi is only relevant when it comes to printing. This setting should not need to be changed for web.

What is important is "image size" - especially in pixels. Reasonable web images run 400-600 pixels on the longest side. When you save a JPEG, you can alter the quality level which will increase or decrease image compression and change the resulting file size in kilobytes. In a program like Photoshop, you will get an indication of the final size in kb at the different quality settings, so you should be able to find something that ends up at about 250kb.

There is a helpful article on processing images for the web here:

http://www.naturescapes.net/042005/gd0405.htm

Andy
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Re: jpeg sizes

Postby Andy » Wed Oct 04, 2006 1:52 pm

Heather: Thanks for the clarification on this. My explanation might be why the "blind" should not lead the "blind." :D I remember now reading and learning this.

Abby: Heather's method--and explanation--is much simpler to do and easy to understand than mine. In addition to being partly wrong on the ppi/dpi issue, you don't even need to worry about that to upload. I hope you will upload them so we can see them. Let us know if we can help.
Andy

If it sounds too good to be true, its probably . . . .

abby
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Re: jpeg sizes

Postby abby » Wed Oct 04, 2006 2:42 pm

Thank you for your replies, but gosh, I just feel so stupid. I honestly have no idea what you are talking about. It is like a foreign language to me.

All I know is that I take my pictures, download them, and look at them and tweak them here or there (color/contrast/crop etc) and they come out great. Other than that, I know nothing about computers or megapixels or jpegs or any of those other things.

I really am an educated person, LOL......I just don't do this kind of thing well. I guess when my son comes home from school this weekend I can have him help me out.

By the way Andy, I emailed you some of my pictures because you said you wanted to see them. Hope you liked them. I had so much fun taking them this weekend. I think I have found myself a new hobby! I just need to take some classes I guess to learn more about digital photography.

Thanks again!!!!!! Abby

Andy
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Re: jpeg sizes

Postby Andy » Wed Oct 04, 2006 3:15 pm

Abby: When you are doing the "tweaking" (color, contrast, crop, etc.), you must be in a software photo editing program. There will be an image size dialog there somewhere. You should be able to change the H x W pixel dimension. Just follow Heather's comments and it shouldn't be a problem. That's really all you need to know about pixels for this purpose.
Andy

If it sounds too good to be true, its probably . . . .

abby
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Re: jpeg sizes

Postby abby » Wed Oct 04, 2006 5:29 pm

Thank you so very much for your help!!!!! :D

Download successful!!!!!!! :cool:
Abby



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