DPChallenge: A Digital Photography Contest You are not logged in. (log in or register) 
 

DPChallenge Forums >> Current Challenge >> Dimensions
Pages:  
Showing posts 1 - 25 of 29, (reverse)
AuthorThread
 09/21/2012 04:35:34 PM · #1
A question regarding file dimensions for challenge entry...if I go into Photoshop and resize the image to 800 pixels on one side, is that what I need to do to enter a challenge?
 09/21/2012 04:38:09 PM · #2
Assuming I am reading that right, yes. That is exactly what you need to do.

:)
 09/21/2012 04:40:33 PM · #3
Originally posted by mbrutus2009:
Assuming I am reading that right, yes. That is exactly what you need to do.

:)


2nd that... 800 pixels MAX, either width and/or height. that is the dimension restriction

then you need to save as jpeg with the amount of compression/quality that will also make the entry <300 kb

-m
 09/21/2012 05:21:44 PM · #4
Originally posted by mefnj:
Originally posted by mbrutus2009:
Assuming I am reading that right, yes. That is exactly what you need to do.

:)


2nd that... 800 pixels MAX, either width and/or height. that is the dimension restriction

then you need to save as jpeg with the amount of compression/quality that will also make the entry <300 kb

-m


How do I check the compression/quality. Sorry about questions that probably seem common sense to many of you.
 09/21/2012 06:45:10 PM · #5
No worries. I had to ask this very question when I first got my version of photoshop.

Assuming all photoshop programs do it the same way, when you click "save as" it brings up a window asking what you want your quality to be when saving.



This is what I see when I save the photo. Should be similar to what you see.

Message edited by author 2012-09-21 18:46:15.
 09/21/2012 06:56:28 PM · #6
I'm using CS5, so it's probably the same. I'll check that. Thanks.
 09/21/2012 06:59:16 PM · #7
No problem. If you have any problems with it, I know there are tons of people here that can point you in he right direction.

:)
 09/22/2012 10:45:19 AM · #8
For some reason, my photo isn't being uploaded. Now, what am I doing wrong? Sheesh...maybe I should just skip this challenge.
 09/22/2012 10:54:26 AM · #9
Originally posted by PuppyDogMom:
For some reason, my photo isn't being uploaded. Now, what am I doing wrong? Sheesh...maybe I should just skip this challenge.


Don't give up that fast ;-) Try it again and tell me exactly what you did, might see the problem then.
 09/22/2012 11:06:14 AM · #10
Yes, do keep trying otherwise you will never be able to enter.
It will no doubt be something really simple .
 09/22/2012 11:11:59 AM · #11
Keep in mind it also needs to be no more than 300MB.
 09/22/2012 11:30:49 AM · #12
That should be 300kb---not MB.
 09/22/2012 11:34:12 AM · #13
Originally posted by mbrutus2009:
No worries. I had to ask this very question when I first got my version of photoshop.

Assuming all photoshop programs do it the same way, when you click "save as" it brings up a window asking what you want your quality to be when saving.



This is what I see when I save the photo. Should be similar to what you see.


You should be using "Save for web and devices" to save for DPC; it's another option in the same menu. The trouble with the one pictured above is it doesn't include in its calculations the size of the EXIF data file that is appended to the image, and sometimes that will push you over 300 kb. Save For Web strips the EXIF (a good idea anyway) and allows you to specify a maximum file size, and saves you as close to that number as possible.
 09/22/2012 11:39:02 AM · #14
So you can submit a pix without the EXIF?
 09/22/2012 11:51:40 AM · #15
Originally posted by Digipixer:
So you can submit a pix without the EXIF?


Yes, you can. If you are asked for an original, that's when the3 SC will need to look at the EXIF.

Positive aspects of stripping EXIF:
- Use the entire allowed file size for image data
- Eliminate the possibility of folks poking at EXIF data to figure out whose entry they are seeing

Negative aspects:
- Your settings don't auto-populate
- You eliminate any educational value that the EXIF may have for others

I can see both sides. for myself, I never strip it. The small file size savings makes little or no difference to me, and I would rather keep the information on the shot.
 09/22/2012 01:14:19 PM · #16
Originally posted by Digipixer:
That should be 300kb---not MB.

Ha! Sorry. I've been transferring 500MB-files all week so I've got a one-track mind at the moment.
 09/22/2012 01:47:06 PM · #17
Originally posted by Digipixer:
That should be 300kb---not MB.

If you're going to get picky, I use the capitalized KB to distinguish KiloBYTEs from kilobits, which are one-eighth the size.
 09/22/2012 01:57:00 PM · #18
Is that why you capitalize the 'E'? :)
 09/22/2012 02:07:14 PM · #19
Originally posted by Digipixer:
Is that why you capitalize the 'E'? :)

No, I once had a fictitious business name registration as General Eclectics -- I just shortened that, and also I thought it made it sound like one of the proliferating DJ names, which all seemed to use an initial somewhere. As a "bonus" I noticed that if you just add the latinizing accent mark — generále — you can become the head of a banana republic ... ;-)
 09/22/2012 02:38:28 PM · #20
Originally posted by Kroburg:
Originally posted by PuppyDogMom:
For some reason, my photo isn't being uploaded. Now, what am I doing wrong? Sheesh...maybe I should just skip this challenge.


Don't give up that fast ;-) Try it again and tell me exactly what you did, might see the problem then.


Still didn't work. Went to "enter this challenge" then "upload file"...I selected the file that I have saved on my desktop, then checked the box indicating that I had followed the rules...No option to submit the file. I couldn't complete the process. It's odd because I've entered a couple of other challenges with no problem. For some reason, I've run into a glitch. Frustrating.
 09/22/2012 04:05:40 PM · #21
Try using the link for the "Classic Uploader" -- if that doesn't work, then there is something wrong with the file: pixel dimensions, file size, file format, etc.

Maybe if you can post the file info we can see what's wrong ...
 09/22/2012 04:28:31 PM · #22
File size is 152KB, pixel size is 800x519, jpg. That shouldn't be a problem, should it?

It uploaded to my portfolio.

Message edited by author 2012-09-22 16:29:59.
 09/22/2012 04:34:30 PM · #23
Originally posted by PuppyDogMom:
File size is 152KB, pixel size is 800x519, jpg. That shouldn't be a problem, should it?

It uploaded to my portfolio.

Try putting it in your Workshop folder, and then use the "Copy From Workshop" option on the submission page.
 09/22/2012 04:53:35 PM · #24
Originally posted by mefnj:
800 pixels MAX, either width and/or height. that is the dimension restriction

then you need to save as jpeg with the amount of compression/quality that will also make the entry <300 kb

-m


Not a big deal but while the 800 pi is ideal sometimes it is a better idea to submit slightly smaller images if the compression percentages are better numbers. If you are saving your image at 21.79% to get 800 pi, think about saving at 20% and using a smaller, cleaner image. Those big round numbers (20%, 25% ect) make cleaner images than the weird numbers because the pixel level decisions are simpler for the program.
 09/22/2012 06:16:35 PM · #25
Originally posted by BrennanOB:
Originally posted by mefnj:
800 pixels MAX, either width and/or height. that is the dimension restriction

then you need to save as jpeg with the amount of compression/quality that will also make the entry <300 kb

-m


Not a big deal but while the 800 pi is ideal sometimes it is a better idea to submit slightly smaller images if the compression percentages are better numbers. If you are saving your image at 21.79% to get 800 pi, think about saving at 20% and using a smaller, cleaner image. Those big round numbers (20%, 25% ect) make cleaner images than the weird numbers because the pixel level decisions are simpler for the program.

I agree, but I think the use of the word "compression" here is misleading -- what you mean is resampling ratio. "Compression" is better reserved for the JPEG alcorithm which determines the size on disk.

Personally, I make most of my images 704 pizels wide, which is exactly 25% of the original, making each ressampled pixel the result of averaging exactly four pixels in the originals. I think this should improve preservation of detail.

Also, if my image is too large by just a few KB (e.g. 309KB), I will sometimes crop off just a few more pixels (e.g 704x528 to 700x520) to get under the 300KB limit without having to lower the JPEG quality setting, as long as it doesn't change the composition significantly.
Pages:  
Current Server Time: 07/31/2025 04:50:03 AM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 07/31/2025 04:50:03 AM EDT.