Northern Parula.
One of the Parula shots I like to share with you. I took it last week on its breeding ground, Algonquin P.P.
Thanks for looking.
Canon EOS-1D Mark IV
Mode Manual Exposure
Tv 1/250
Av 6.3
ISO 400
EF500mm f/4L IS USM +1.4x
Flash Exposure Compensation -1 1/3
Nice comp. Higher ISO setting would allow for more needed DOF.
Thanks Alan. Good observation. I just simply forgot and had only one chance.Originally Posted by Alan Murphy
Next day I remembered and switched to ISO 1250.
That's the trouble with getting old; you now what to do, just don't remember.
Hi Karl. I guess it was a set up. The birds pose would indeed require some more DOF that you could have had by going up on your ISO and maybe you would have gotten the feet sharp too. Maybe you have some different poses of this session too that would be nice to see. TFS.
Thanks Lorant.
Yes it was. It only landed once for about ten seconds.
I fired about five shots and it was gone.
Since I was waiting fairly long I never made a mental note that the light was dying on us, so the ISO stayed low.
I had a few more shots next day at ISO 1250.
Gorgeous bird, Karl. Nice bg, perch and light too.
I see some artifacts in the bg probably from compression - don't know if it's just my monitor.
Thanks, Sidharth.
You are right. I checked it, it looks awful. Checked the full size picture, nice and smooth.
Any idea as to how I can avoid these artifact when I change the image size.
I usually change the resolution from whatever it was to 146.3 on a 7x5" image which will change the with
to 1024.
Maybe I should leave the resolution alone and change the with.
What is your advice?
Hi Karl,
When resizing in PS, I do not use the "Document Size" settings at all.
AFAIK, if you have "Resample Image" checked and set the pixel dimensions (1024 width in this case), that ought to be enough.
There are a few interpolation algorithms offered when resampling.
Nearest Neighbor and Bilinear Interpolation are very simple/fast algorithms, probably from early days - I'd stay away from them.
Bicubic Smoother is best for enlarging images (I haven't used it)
I haven't liked the output from Bicubic Sharper but I haven't played with it too much.
I've found "Bicubic (best for smooth gradients)" to work the best for me and I typically stick to that.
I sharpen the tiff after resampling/down sizing as the last step before converting to jpg.
Finally, when I create the output jpg, I ensure that it is not more than 245KB.
I've heard that submitting a larger image may cause the forum software to resize it for you - no telling what interpolation method it uses (although I don't have first hand experience of this)
Also, if you have darker/uneven bg with details, some compression artifacts are apparently hard to avoid (as I experienced with my last image posting), but that is not the case with your nice image here.
I'm pretty sure the original is silky clean!
Hope this help; if not, I'm sure the guys at the workflow forum will be able to sort it out.
Last edited by Sidharth Kodikal; 07-10-2012 at 09:13 PM.
Hi Karl,
Beautiful bird. Lovely details, BG and perch.
- Maya
Very nice shot. Beautiful bird, very nice perch, and great background.
Well done.
Hi Karl. The Northern Parula is one of the beautiful warblers that has continued to elude me, so I'm envious that you captured him -- and in spectacular full breeding splendor to boot. Good advice about the DOF and ISO, which would have improved this immeasurably.
Thank you Sidharth taking your time and explaining downsizing.
I used before and repeated downsizing with Bicubic (best for smooth gradient).
However, I always convert it to jpeg firs and save the original as jpeg.
I redone the downsizing exactly the same way I did before.
Now I don't see artifacts which doesn't necessary mean that there are none but it looks better none the less.
It's a mistery. I don't know what went so wrong before.
Here is the new picture resized from 7x5" having 3088 pixels whith and 441.143 pixel per inch resolution.
(After resizing, I res-harpened the bird only as I always do.)
Thanks again,
Karl.
Beautiful and colorful image. Sharp and well composed.
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