resizing? - DPChallenge Forums

Olympus OM-D E-M5 Mark III

04/10/2009 11:03:43 AM · #1

My challenge entries seem to come out smaller in size and horrible quality, so i'm assuming I'm doing something wrong. I've noticed that some of you are resizing then saving for web in PS. I've just been exporting as email from Lightroom - if I try to go with the 720px on the longest size it invariably comes out larger than the accepted file size, but still a very small image.
Can someone please tell me which is the best way to go for DPC submission?
I'm going to bed now, so please accept my thanks in advance this time :-)

Yo_Spiff

Olympus 12-100mm f/4.0 M.Zuiko ED IS PRO

04/10/2009 11:08:46 AM · #2

I don't use Photoshop, but there is certainly an option somewhere in there to adjust the amount of JPEG compression that is applied to the image. My worklflow in PaintShop Pro is to resize, sharpen, and when doing my final save, I adjust the compression to give me a filesize as close as possible under the challenge limit. Photoshop is surely similar, but I know someone else will have a more specific answer.

cpanaioti

Canon EOS-40D

Canon EF 70-300mm f/4.5-5.6 DO IS USM

04/10/2009 11:09:42 AM · #3

I've exported from Lightroom 2. Don't use the email setting.

Just set the longest side and adjust the quality until the result is within the file size limit. Apply sharpening for screen, usually standard, sometimes high.

Message edited by author 2009-04-10 11:10:24.

04/10/2009 11:38:03 PM · #4

Thanks guys - anyone else doing anything different?

Sony SAL-1855 DT 18-55mm f/3.5-5.6

04/12/2009 05:16:33 AM · #5

bump

lawrysimm

Sony SLT-A57

04/12/2009 05:53:36 AM · #6

I've only submitted two so far.. but I use Photoshop Elements.. do a save for web, click a tick in the contrain proportions box and set the longest edge to the value allowed in the challenge (640 pixels for the 2 I've entered). Then I click on the JPEG quality slider and keep adjusting that until the filesize is a nudge under the 150k allowed. Then click "save as", and upload. Only takes a couple of seconds.

roba

Canon EOS-5D Mark II

Canon EF 70-200mm f/2.8L IS USM

04/12/2009 07:39:24 AM · #7

I only use LR2 to export for email.
My worflow in PS is as follows:
after my final edits...
- resize
- USM (or whatever sharpening method fits the image)
- NeatImage (only if required, and I nearly always mask some areas)
- add border (I always leave the exact pixel room when resizing)
- Save for Web (choose the Optimize option and normally set to a couple of kb shy of target)
- set for bicubic sharpen

There's a DPC tutorial (I'd check for the link, but I'm on my cellphone).

Hope this helps :O)

CEJ

Canon EOS-40D

Canon EF-S 18-200mm f/3.5-5.6 IS

04/12/2009 08:23:19 AM · #8

Try reading this tutorial

Ja-9

Nikon D750

Nikon AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II

04/12/2009 08:58:09 AM · #9

jettyimages follow the Tutorial that

CEJ noted and pay attention to the "save for WEB" that

LadyStarstruck talked about...once I bumped my way through those two things I was able to save my pictures very fast and they are the right size...I must have made 6-8 copies before I got the size right...boy was that frustrating and I lost something with each save...it was a "head slap" moment....

Message edited by author 2009-04-12 08:58:24.

NikonJeb

Nikon D850

Nikon AF-S Nikkor 28-300mm f3.5-5.6G ED VR

04/12/2009 09:19:34 AM · #10

I know it makes some people nuts to do it this way 'cause it means editing specifically for DPC and having everything else be different.

I do my initial work in the RAW converter, and as soon as I pop it over into PS from the RAW converter, I resize it right then.....and continue on with my editing.

I have found that the file size ends up between 350 & 500 KB when I'm done, and the Save-for-Web function does seem to take down the quality.....it seems to desaturate & flatten the image so I usually pump it up a little before I save.

Anywho.....I dunno if the steps from a hack like me will help, but that's how I do it.

chromeydome

Nikon D7000

Nikon AF-S Nikkor 28-300mm f3.5-5.6G ED VR

04/12/2009 09:35:55 AM · #11

I think you have a mac?

I export a full size jpg from aperture and then do the resize in Preview. It is very easy there and doing a Save As gets you the dialog box where you can select the quality (file size). I then look it over again at doc size and do a final sharpen, plus any final tweaks to sat, contrast, etc. right in Preview. I always do Save As so I can control the compression quality to as close to 200k as possible.

NikonJeb

Nikon D850

04/12/2009 09:43:34 AM · #12

Originally posted by Ja-9:

jettyimages follow the Tutorial that CEJ noted and pay attention to the "save for WEB" that LadyStarstruck talked about...once I bumped my way through those two things I was able to save my pictures very fast and they are the right size...I must have made 6-8 copies before I got the size right...boy was that frustrating and I lost something with each save...it was a "head slap" moment....

Umm....

In PS, under the dropdown "Image", you select image size, and make your longest side the pixels you want......Done!