RobK From United Kingdom, joined Sep 2004, 3966 posts, RR: 17 Posted (10 years 3 months 3 days 14 hours ago) and read 5736 times:
Now guys, please be gentle!
I've never really been one for pic taking but a friend of mine in New Zealand sends me pics of what he gets up to and I'd like to do the same for him.
I've recently purchased an Olympus Camedia C-5000 4.9 megapixel camera (2nd hand and excellent condition) and have been having a play around with it.
The main problem I'm having is getting good quality pictures down to a sensible file size.
I'm just using it on 'auto' setting for now in order for me to master the basics but some really simple things are puzzling me, like for example TIFF files, then HQ, SHQ, SQ1, SQ2 etc. What's this all about ? Wild guess at 'high quality', 'super high quality' etc etc, but both HQ and SHQ say 2560x1920 resolution, why are they both the same?
I took some pics at top resolution on SHQ (2560x1920) and transferred them across from the camera into the Camedia Master photo editer but you need a 42 inch wide-screen monitor to view them! When you reduce it down to a size that fits on the screen the picture loses it's quality and becomes 'jagged', even though the file size stays the same, why is that? Surely if the picture is excellent quality at full 'blown up' wide-screen size then it should be outstanding quality at 'normal' size ? I don't understand it. The pic size is around 1.1 Mb
I tried the medium resolution setting (1600x1200) and although the pic was smaller at 'full size', it was still two monitor screens wide and around 500Kb per pic - still far too big for dial-up users.
Last resort tried the 640x480 resolution but although the pic is a sensible size and fits nicely on the screen, the quality is poor (file size around 80Kb).
What am I doing wrong ?
I have ACDSee and also Adobe Photoshop 2.0. but the editing functions in these don't seem to do anymore than the options I've got available to me in Camedia's own editer.
The pics in this thread (for reference only) http://www.onlinetruckers.co.uk/inde...hpBB2&file=viewtopic&t=28&start=30 is the kind of thing I'm after - 450x340 pixels is the right size I want, but this guys pic quality is spot on (for pic size) but his file sizes are really small. When I reduce mine from full size to this kind of size the quality becomes horrendous! Someone please help before I go insane !!
Finally, can someone tell me what changing the ISO does? I have choices of 40, 80, 160 and 320 I think.
Sorry for being so 'dumb' but as you can see, I know f'all about cameras, digital or otherwise!
Karlok From Netherlands, joined Mar 2002, 839 posts, RR: 1
Reply 1, posted (10 years 3 months 3 days 13 hours ago) and read 5704 times:
Why you need a 42 inch monitor? That the power of pixels!
If you have a monitor resolution of 1024x768 that means..
vertical.. you have 768 pixels and horizontal 1024 pixels..
And a photo at 2560x1920 ... tada, simply it won't fit. So, you have to 'zoom out' the photo to view in 100%
And about the SHQ, HQ. It means the quality of the photo. Higher quality will results in bigger filesize but less compression, that means more 'color and detail' information.
And ISO will say the sensitivity of you camera sensor, the higher the number more sensitive the sensor is and thus you can take a a faster shutterspeed with the same aperture size. But a higher ISO will also result in more grain in your photo what will reduce photo quality.
RobK From United Kingdom, joined Sep 2004, 3966 posts, RR: 17
Reply 2, posted (10 years 3 months 3 days 13 hours ago) and read 5679 times:
Thanks for the speedy reply.
Okay, so am I right in thinking that I need HQ or SHQ setting and then 640x480 pixels ? Therefore getting a good quality pic that actually fits on the screen and is a sensible file size?
I take it then that the quality of a pic is simply dependant of the HQ/SHQ settings on the camera and the __x__ figures are merely the physical size of the photo and nothing to do with the quality ? Doesn't seem to add up
How do I get photos like those in the link then? I don't have a pixel setting less that 640x480 so how do I get 450x340 ? I have tried this before by using a larger (ie. 640x480 or 1600x1200) pic and simply editing the pic size by reducing the pixel size but sadly, like I explained, it reduces the pic to the right size but the quality goes tits up and the pic becomes really 'jagged'
Kukkudrill From Malta, joined Dec 2004, 1123 posts, RR: 4
Reply 6, posted (10 years 3 months 3 days 12 hours ago) and read 5645 times:
Just tried reducing a 2048 x 1536 shot (3.2 mp) taken with an Olympus C-740 to 450 pixels width in Photoshop Elements. No jaggies. Perhaps this happened to you because the original image was low quality?
If you want very small shots, I suppose you don't need to shoot at max size, though you might regret it later if you want to make a large print of an image you particularly like. And whatever size you shoot on, shoot at the highest quality available for that size. Like Karlok said, "quality" indicates the amount of compression applied to a photo, independent of the size of the photo. It's just that Olympus organises the size/quality options in a rather confusing manner.
Also, use Photoshop to edit your pics. It's not a very user-friendly piece of software but it's well worth the investment of time to get to grips with it. Olympus's house software is terrible.
Make the most of the available light ... a lesson of photography that applies to life
RobK From United Kingdom, joined Sep 2004, 3966 posts, RR: 17
Reply 7, posted (10 years 3 months 3 days 11 hours ago) and read 5620 times:
Ah yes, that caught me out originally Steffan but I soon realised what the problem was there!
I shall have another play with it tomorrow and see if I can save a SHQ 2560x1920 pic somewhere (can't find anywhere to store a 1Mb+ pic) and then show you a couple of comparisons so you can see for yourselves what I mean. I hope the camera isn't faulty
JumboJim747 From Australia, joined Oct 2004, 2465 posts, RR: 42
Reply 9, posted (10 years 3 months 1 day 13 hours ago) and read 5497 times:
I too had the c740 and what i noticed when i was using the camedia software supplied is that you are restricted in what you can do with the file outside of the software they give you.
My advice is to get rid of the software and just transfer the pictures from the camera into a folder on your computer then you have the freedom of doing anything with the file.
Hope that helps
Also don't forget with the Olympus file size and picture qualthy are different for every mode.
So if you are shooting in auto and have the setting at highest quality and then go to another mode it will be different
make sure that all modes are on high quality