Photoshop 7 JPEGs Break IE - DPChallenge Forums

09/17/2002 12:37:37 AM · #1

Two or three times, we've had a problem on changeover night where one image would stop downloading and cause no more images to download. The only way to fix it was to resave the faulty image and have users close their browsers and clear their cache to return.

I stumbled accross this article on photo.net tonight, and it explains why. Those of you who have Photoshop 7, please use the 'save for web' option until we can find a workaround.

Drew

rjhawkin

Canon PowerShot SX120 IS

10/27/2002 02:34:33 PM · #2

hmm interesting, I use that feature anyway because it lets you optimize for file size and adjusts the quality to the maximum for that size.

bod

10/27/2002 03:00:51 PM · #3

Breathing in too sharply near your computer breaks IE ... I suggest that everyone be forced to use Mozilla/Linux ;)

psychephylax

Canon EOS-5D Mark III

10/27/2002 04:54:19 PM · #4

<sarcasm>
I love Microsoft!
</sarcasm>

11/11/2002 01:16:34 AM · #5

First... *bump*. The Photoshop 7 issue causes all images after the problem-image to stop loading. We're working on a fix for DPC2, but all images that break the site will be disqualified until they're fixed.

Second... it appears that the Nikon E-5700 as well as some Minolta cameras may be saving in a format that's causing things to break and (gasp) this one's not just a Microsoft issue. There were about 5 images in the current challenge that wouldn't load or loaded verrrrry delayed. They don't, however, keep other images from loading. This is not the same issue as Photoshop 7.

The ones I was able to get to by FTP were all taken with the Nikon E-5700 (according to intact exif). Once I saved them with 'save for web' they were fine.

The ones I can't even download with FTP (BigSmiles had an image like this last week) all say they were taken with Minolta cameras when I look them up in the challenge data (database, not exif).

Has anyone heard of issues related to either of these two cameras and their files?

Drew

Hendrik

Minolta DiMAGE 5

11/11/2002 07:34:58 AM · #6

Originally posted by drewmedia:
it appears that the Nikon E-5700 as well as some Minolta cameras may be saving in a format that's causing things to break...

I dunno about Nikon, but Minolta's latest toy now saves ICC profiles in its JPEGs. The Minolta DiMAGE cameras have always used their own proprietery colour space to increase the colour gamut they allow. Normally, you would then use the supplied software to convert this into sRGB or Adobe colour space as required. The original cameras didn't bother to save the relevant profile data however. The new 7Hi (and possibly the 7i?) allow different profiles to be used when recording and so actually save the profile in the JPEG header. This is probably what you are seeing. As to why this would confuse browsers, I dunno.

The solution is again to filter out any extraneous header blocks from all JPEGs as they are uploaded. There are various programs about with will do this (a few are mentioned in the thread referenced at the top of this forum). I would have thought it reasonably simple to do add this to the upload script. And if the PS7 thing actually nukes IE it sounds like its worth doing!

ClubJuggle

Canon EOS-400D Rebel XTi

11/11/2002 07:47:45 AM · #7

If it helps with diagnosis, my entry last week was taken with a Minolta DiMage 7 and I submitted the image directly from the camera (no resizing or other editing, I just uploaded the file from the CF card).

-Terry

psychephylax

Canon EOS-5D Mark III

Nikon AF Nikkor 50mm f/1.4D

11/11/2002 08:20:22 AM · #8

I had a similar problem but with Olympus cameras and Walmart.com...

Whenever I edited a photo and tried uploading it to Walmart.com to get a print it would error out and say I couldn't do it. Eventually I figured out that the problem was being caused by the ICC profiles Photoshop wanted to add to the images. Once I unchecked that box images were uploaded without a problem.

dimitrii

Nikon D70

11/11/2002 07:44:14 PM · #9

Originally posted by bod:
Breathing in too sharply near your computer breaks IE ... I suggest that everyone be forced to use Mozilla/Linux ;)

Good suggestion!

Patella

Canon EOS-500D Rebel T1i

11/12/2002 12:25:36 PM · #10

It's POSSIBLE that this patch to PS7 may fix the problem. Might be worth testing.

KarenB

Canon EOS-70D

Canon EF-S 18-135mm f/3.5-5.6 IS

11/12/2002 04:26:58 PM · #11

I have always had good clear images submitted, and now that I had to "save for web", I am getting comments regarding the clarity and "graininess".. Now, maybe this is a product of my inexperience with Macro, but it just seems strange. Any thoughts on how to solve this?

Canon EF 17-40mm f/4L USM

11/12/2002 04:40:15 PM · #12

We've (ok, Langdon) added a lossless jpeg transformer to the submit process (jpegtran for the curious), and it seems to fix all three of these issues. Hopefully, this won't be a problem at all anymore.

Drew

Seeker

Canon EOS-30D

11/12/2002 05:12:51 PM · #13

Originally posted by drewmedia:
We've (ok, Langdon) added a lossless jpeg transformer to the submit process (jpegtran for the curious), and it seems to fix all three of these issues. Hopefully, this won't be a problem at all anymore.

Drew
OK, so does this mean we do or do not need to "Save for web" now?

langdon

Canon EOS-20D

11/12/2002 05:35:03 PM · #14

Originally posted by Seeker:
OK, so does this mean we do or do not need to "Save for web" now?

Do whatever you like for now, all of our bases should be covered.

timj351

Sony DSC-F707

11/12/2002 06:32:48 PM · #15

I'm curious as to what is the difference between the two jpeg saving methods. Does using the Save As method include some sort of EXIF info or other info that is problematic on some systems or is it some other reason? I always thought that they were pretty much the same except that the Save As method used a scale of 1-12 using whole numbers only and that the Save For Web method used a scale of 1-10 but allowed the visual aspect as well as dialing in the exact decimal percentages. They always seemed similar to me and I have not yet encountered any of the problems being discussed here.

T

KarenB

Canon EOS-70D

Canon EF-S 18-135mm f/3.5-5.6 IS

11/12/2002 07:20:14 PM · #16

I don't know the technical difference. I just know what I see. When I used "save for web" my image lost quality compared to the original.

Canon EF-S 18-135mm f/3.5-5.6 IS

11/12/2002 08:15:20 PM · #17

Originally posted by timj351:
Does using the Save As method include some sort of EXIF info or other info that is problematic on some systems or is it some other reason?

I know save for web doesn't save EXIF. From the photo.net link, 'save as' in PS7 also saves preview information, and that's the cause of the problem.

Drew

timj351

Sony DSC-F707

11/12/2002 08:53:28 PM · #18

I understand, Drew. However the Save For Web method is restricted to a specific size and beyond that size you have no choice but to use the Save As method. I encountered this when I created a poster and saved it to the Web. Can the preview information be turned off or deleted? Also, I was interested in any quality differences between the two saving methods.

T

Gordon

RIM BlackBerry Curve

Canon EF 85mm f/1.8 USM

11/12/2002 11:24:32 PM · #19

I almost exclusively use save for the web, for well, when I save stuff
for the web. Basically whenever I'm creating a JPEG I use the save for
web option. Then I use the 'optimise to file size' option, set to 147k
for DPC or whatever I need for other usages. I don't think I've ever
seen any image problems as a result of this, unless I set the compression
size too low. Anything below 50 starts causing problems.

Karen - do you know what final file size you are getting that have problems ?

KarenB

Canon EOS-70D

11/13/2002 08:45:39 AM · #20

I think it was around 140K or something like that (without looking it up..on my way out the door)... Anyway.. It is the first time I used "save for web", so maybe I didn't do it right...
Hopefully I can just "save as" now like I have done before. But, out of curiosity... what is supposed to be the advantage of "save for web"?

Kavey

Canon EOS-400D Rebel XTi

Sigma 18-125mm f/3.5-5.6 DC for Canon

11/13/2002 09:19:46 AM · #21

Originally posted by langdon:

Do whatever you like for now, all of our bases should be covered.

All your bases are belong to MEEEE!!

:)

* This message has been edited by the author on 11/13/2002 9:17:03 AM.

Gordon

RIM BlackBerry Curve

Canon EF 85mm f/1.8 USM

11/13/2002 10:06:17 AM · #22

Originally posted by Karen Bryan:
I think it was around 140K or something like that (without looking it up..on my way out the door)... Anyway.. It is the first time I used "save for web", so maybe I didn't do it right...
Hopefully I can just "save as" now like I have done before. But, out of curiosity... what is supposed to be the advantage of "save for web"?

I like it because I can say 'make it this file size' but other than
that the save for web option has loads of additional features for churning
out html, or image maps and that sort of thing, and seeing how different
compression values will change the output, compared to other (e.g.,
a 4way split of the image, with each box at different ratios)

The problem you might be seeing is your image being remapped to a
different colour space, without it actually being converted to that
colour space.

Antithesis

Canon EOS-10D

11/18/2002 06:49:51 AM · #23

Originally posted by langdon:
Originally posted by Seeker:
[i]OK, so does this mean we do or do not need to "Save for web" now?

Do whatever you like for now, all of our bases should be covered.
[/i]

So, I don't understand why the message stating that you MUST save for web page is still on the home page.