Automotive Photography Competition #216

[Niko_Fx]

Automotive Photography Competition #215

Rules

• The deadline is Sunday 11:59 PM EST
• The photograph can contain any automotive image (containing no adulterous material)
• The proposed picture must be your own and not found on the net.
• The photograph must be attached using the UCP system. Any picture not attached using the UCP system will not be in the voting thread.
• Your image may be up to 800 pixels wide or tall.
• Photograph may contain post-processing editing
• It is preferred that you state enhancements made, but not necessary.
• The photograph must be taken no earlier than three months before start date
• Each photographer cannot vote for himself, they must vote for the others.
• Any users who enter and vote for themselves automatically receive a 2 week penalty from the competition and all votes previously given to his/her photo are removed.
• The entry must contain the following information in the same order :

User name
Subject matter/photo title
Date taken
Camera Type | additional information you feel important

Standings 2009

pat_ernzen: 4
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basman007: 2
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G_13191: 1 / Rasmus: 1 / Sauc3: 1 / john hegg: 1 / superwaxer: 1 / cmcpokey: 1 / Soloracer: 1 / Ecnelis: 1 / kvisser: 1 / nikowgcf: 1 / macfly: 1 / Johnnynumfiv: 1

[henk4]

Henk4
Ferrari 312T4
Nuerburgring June 2009
Canon 40 D, 28-300 IS, 35 mm
1/100, F14, Iso 100.
Cropped and sharpened with Irfanview

[aiasib]

Aiasib
"I am Joe's Howling Blood-Red Fury"
07.08.09
Canon Powershot S5iS| de-noised

[Kitdy]

henk, the picture still looks messed up. I think it's still the program you are using. That looks like it'd be a good shot otherwise but it's quality looks massively reduced.

[aiasib]

henk, are you resizing after you sharpen or before? and how comes you're only getting 72 dpi?

[henk4]

henk, are you resizing after you sharpen or before? and how comes you're only getting 72 dpi?

I sharpen after resizing. as for your second question, I have no idea.
I have attached the shot again.
Cropped only and resized with Irfanview, watermark with Irfanview.

Edit: as far as the 72 dpi is concerned, all my shots are 72 dpi, when shown on my laptop. When shown on Wouter's Mac, they are 300 dpi. Question, does it really matter, and if so why?

[aiasib]

hmm, I don't think sharpening is the problem then...I'm looking at the thin white lip under the '11' decals; there is still some pixelation. I can also see it in the seat ibiza/alpine photo you took a while back. Perhaps some of the more intrepid photographers could offer a couple cents.

[henk4]

hmm, I don't think sharpening is the problem then...I'm looking at the thin white lip under the '11' decals; there is still some pixelation. I can also see it in the seat ibiza/alpine photo you took a while back. Perhaps some of the more intrepid photographers could offer a couple cents.

That's not pixelation anymore, it is shape of the chassis cover.....the Ibiza photo was sharpened. probably that is not what should be done, but when I look at my screen, my personal opinion is that most shots look better after sharpening.

[aiasib]

I meant a sort of dithered effect along the white lip, it could be a combination of the 72dpi and my lowly desktop resolution of 1024x768...

[henk4]

I meant a sort of dithered effect along the white lip, it could be a combination of the 72dpi and my lowly desktop resolution of 1024x768...

my original full size shot on 72 dpi does not show that effect, I use 1280 by 800 on my screen and it still looks fine (without sharpening)

[Rasmus]

Edit: as far as the 72 dpi is concerned, all my shots are 72 dpi, when shown on my laptop. When shown on Wouter's Mac, they are 300 dpi. Question, does it really matter, and if so why?

It doesn't. It only matters when printing.

Example: You have a 3888 x 2592 pixel image. With a 72 dpi print setting, you'd get a 54 by 36 inch print. With 300 dpi you'd be getting a 12,96 by 8,64 inches print.

That said, the pic in the original shot was still oversharpened. I can see a halo around the left front tire.

Edit: I think it's shitty compression by Irfanview that is to blame. You can read about quantization tables here, as well as compare Irfanview's compression to Photoshop's, the native 40D jpeg compression, etc.: http://www.impulseadventure.com/phot...ntization.html

[henk4]

It doesn't. It only matters when printing.

Example: You have a 3888 x 2592 pixel image. With a 72 dpi print setting, you'd get a 54 by 36 inch print. With 300 dpi you'd be getting a 12,96 by 8,64 inches print.

That said, the pic in the original shot was still oversharpened. I can see a halo around the left front tire.

Edit: I think it's shitty compression by Irfanview that is to blame. You can read about quantization tables here, as well as compare Irfanview's compression to Photoshop's, the native 40D jpeg compression, etc.: ImpulseAdventure - JPEG Quality and Quantization Tables for Digital Cameras, Photoshop

Thanks for this link, I am afraid though that my lack of knowledge (never heard of Quantization before) of what this all means prevents me to find the comparison you hinted at. I could only find that Irfanview at 99% quality is slightly better than a 10D shot. I use 100%.

[Rasmus]

If you use 10/100% you should be good. Still, it looks like bad JPEG compression. Something is definitely off. Feel free to send any RAW file over if you would like for me to try and export it so that we might compare your Irfanview export to my Photoshop/Lightroom export.

[Rasmus]

Rasmus
Foose Stallion
Canon 40D, 70-200 f/2.8 IS
ISO200, 175mm, f/4.0, 1/320sec
Uncropped. Contrast, exposure and saturation adjusted. Vignette added.

[henk4]

If you use 10/100% you should be good. Still, it looks like bad JPEG compression. Something is definitely off. Feel free to send any RAW file over if you would like for me to try and export it so that we might compare your Irfanview export to my Photoshop/Lightroom export.

Thanks for the offer, we have PS/Lightroom available here, but I don't use it because it is not licensed to me. So I stick with the public domain stuff. And I shoot in JPEG.