Pixelly Challenged - DPChallenge Forums

09/26/2013 11:00:19 AM · #1

Hi friends, please help me understand the following pixel problem:

I have a Canon powershot SX30IS camera; the quality settings for taking photographs is set on maximum.
But when in photoshop CS1, I look at the photographs at 100% they become badly pixellated.
so I checked the 'Image Size' and found that they are at only 180 pixels per inch.

I also have an Olympus 6MP camera. the photogs from this camera dont pixellate as much on viewing at 100%.
and the 'Image Size' dialog box shows 314 pixels/inch.

So isn't it weird that we spend 3 times the money on canon and get almost only half the resolution of an Olympus? there must be something wrong with the settings somewhere, but I have no clue...... please help.

09/26/2013 11:05:50 AM · #2

You should upload a file and let us check it, otherwise there's no chance to understand what happened to your camera.

Olympus OM-D E-M5 Mark III

09/26/2013 11:13:52 AM · #3

sure, but how do I upload a file. here the insert image tab asks for a url. do I first have to upload the image somewhere on web?

GinaRothfels

Olympus 8mm f/1.8 M.Zuiko Digital ED Fisheye PRO Lens

09/26/2013 11:25:20 AM · #4

Only paid members are allowed to upload photos that aren't entered in challenges, so you would have to upload it somewhere else on the web.

09/26/2013 11:31:55 AM · #5

Thanks, will do that now.

09/26/2013 11:43:09 AM · #6

imageshack

09/26/2013 11:49:59 AM · #7

Tiny

Apple iPad mini 4

09/26/2013 11:50:14 AM · #8

If you are taking in L setting the image should be 4320 x3240.

Not that it really helps.

09/26/2013 11:50:49 AM · #9

Olympus

Tiny

Apple iPad mini 4

09/26/2013 11:51:32 AM · #10

These are 300 x225

09/26/2013 11:52:49 AM · #11

oh i think this doesn't allow you to download the original images.

09/26/2013 11:54:40 AM · #12

pardon my ignorance about the links and URLs

//chandansingh07.wordpress.com/2013/09/26/testing/

please use the above link to access the photographs.

Dragonfly - Canon powershot SX30IS
Sculpture - Olympus

Message edited by author 2013-09-26 11:57:55.

09/26/2013 12:01:14 PM · #13

Dragonfly is taken at ISO400, the sculpture at ISO64, it's hard to compare those two images.

09/26/2013 12:03:51 PM · #14

Originally posted by Alexkc:

Dragonfly is taken at ISO400, the sculpture at ISO64, it's hard to compare those two images.

hmm... let me check for a suitable one to compare with.

09/26/2013 12:04:32 PM · #15

ETA: the noise is a little weird in the Canon file... maybe there's some sort of noise reduction setting in your camera.

09/26/2013 12:11:55 PM · #16

at the same link
//chandansingh07.wordpress.com/2013/09/26/testing/

please check the leaf with water droplets' image.
It is at ISO 80.

09/26/2013 12:13:59 PM · #17

Have you checked your camera settings? Is there some sort of noise reduction?

Olympus OM-D E-M5 Mark III

09/26/2013 12:16:29 PM · #18

Originally posted by Alexkc:

ETA: the noise is a little weird in the Canon file... maybe there's some sort of noise reduction setting in your camera.

I thought so, so read the manual and haven't come across any such setting.

Also, what boggles me is that why are the canon images at 180 pix/inch; while the olympus' tiny camera images are at 314 pix/inch!

Yo_Spiff

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

09/26/2013 12:43:35 PM · #19

Originally posted by artistChan:

Also, what boggles me is that why are the canon images at 180 pix/inch; while the olympus' tiny camera images are at 314 pix/inch!

It is a common misconception. The pixels per inch figure embedded in the photo has nothing to do with the actual resolution of the image in pixels. Your water droplets photos is 3240x4320, which is about 14 Megapixels.

The embedded DPI setting is simply an abstraction until putting the image on to a piece of paper comes up. For a more complete discussion, I'll link you to another thread on this subject that was started by

Roz a few years back.
//www.dpchallenge.com/forum.php?action=read&FORUM_THREAD_ID=896174

Olympus OM-D E-M5 Mark III

09/26/2013 12:51:28 PM · #20

Originally posted by Yo_Spiff:

Originally posted by artistChan:
Also, what boggles me is that why are the canon images at 180 pix/inch; while the olympus' tiny camera images are at 314 pix/inch!

It is a common misconception. The pixels per inch figure embedded in the photo has nothing to do with the actual resolution of the image in pixels. Your water droplets photos is 3240x4320, which is about 14 Megapixels.

The embedded DPI setting is simply an abstraction until putting the image on to a piece of paper comes up. For a more complete discussion, I'll link you to another thread on this subject that was started by Roz a few years back.
//www.dpchallenge.com/forum.php?action=read&FORUM_THREAD_ID=896174

Thanks Steve :) I'm going through the link. please clarify one more doubt - how does the use of Digital Teleconverter affect image quality? my camera has two settings for Digital Teleconverter viz. 1.67x and 2.1x

Yo_Spiff

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

09/26/2013 12:55:16 PM · #21

Originally posted by artistChan:

If it is what I think it is, disable that function. It is digital zoom, which is essentially the same thing as cropping the image on your computer. It is a function meant for snapshooters who just want to post their snapshots and don't edit them. The camera may do some things to try and make the zoomed in image look better, but you can do a better job of it yourself.