C-GRYK From Canada, joined Apr 2000, 751 posts, RR: 39 Posted (10 years 10 months 4 weeks 17 hours ago) and read 1642 times:
I just had a batch of photos from Santos Dumont airport in Rio rejected. I scanned/edited them to the absolute best of my ability yet still can't seem to get any photos accepted anymore. It's quite frustrating to say the least because I feel that there is no way I can improve the quality of these images and that the only way I can get photos on here is to switch to a digital camera, which is NOT happening. Can you guys please give me some advise on how to improve these images so that they are of airliners.net quality? Any input would be highly appreciated.
I scan the negatives using the Minolta Dimage Scan Dual 2's easy scan utility (seems to make no difference to their regular scanning software) at the highest resolution in .TIFF format. I then open them up in Paintshop Pro 7, crop them, immediately resize to 1024 width, then I get rid of small scratches, do an edge preserving smooth filter on the sky area, and finally use USM at about Radius 1.00, Strength 130, Clipping 5. Then I'll save the image as a .JPG using a compression factor of 1, the lowest you can go.
Please tell me... can I improve these or is airliners.net is not a place where my photos are welcome anymore?
P.S. Would be nice if screeners could include more personal notes as to why they rejected the shot instead of all of those generic responses, which don't seem to help at all. Cheers!
Ckw From UK - England, joined Aug 2010, 660 posts, RR: 17 Reply 2, posted (10 years 10 months 4 weeks 17 hours ago) and read 1601 times:
I think the main problem is your sharpening technique - it seems to be eroding very fine detail and is too soft on titles and regs.
I can't remember the details of PSP, but taking a stab at PS equivalences I think you are using too large a radius (in PS I use 0.3-0.6) and the "clipping" - which I think is the same as threshold, is set to high. In fact I suggest you don't use it at all - try setting it to 0. - I'm fairly sure this is why you are loosing detail. You may pic out a little more grain as a result, but I wouldn't worry - as it is, your scans look unnaturally smooth for negs.
One other comment - do any editing, dust touch up etc. BEFORE resize - any bad pixels resulting for this work will get averaged out when you resize.
Finally, it's taken me about 10-15 minutes to study your picture and compose a reply. Where are the screeners supposed to find the time to do this for every rejection?
Apjung From United States of America, joined Aug 2002, 116 posts, RR: 0 Reply 5, posted (10 years 10 months 4 weeks 8 hours ago) and read 1517 times:
If you want to get digital, get a model with at least 3 Megapixels. Even at 3.1 megapixels with my Sony CyberShot DSC-P71, I get less than 25% successful submission rate unless I was to jump over the airport fence to get a better picture or get a 5 Megapixel camera. But seriously, the problem with my submissions is mainly lighting and focus. I'm still trying to figure out how much exposure level is needed if I was to take pictures with the sun NOT directly behind my back for optimum lighting. I'm also trying to figure out which focus setting should I use. This is the manual for my camera. http://www.cybershotcentral.com/manuals/DSC-P71.pdf
I seriously want to know how I can reduce the rejection rate.
I set the camera at maximum pixels (2048x1536) and then use Photoshop 5.0 LE to crop and resize to 1024x768, then Image>Adjust>Auto Levels, then Filter>Sharpen>Unsharp Mask (amount 100 to 200%, radius 1.0 pixels, threshold 2 to 10 levels) then Image>Adjust>Brightness/Contrast.
Also, I used to bring a stepladder with me to put on the back of my pickup truck to get pictures over the fence but I realized if I wanted to be less conspicuous I can just simply stick my camera lens through the chain link fence.
Ckw From UK - England, joined Aug 2010, 660 posts, RR: 17 Reply 6, posted (10 years 10 months 4 weeks 1 hour ago) and read 1478 times:
Andy, again I think it is the sharpening technique working against you. Programs like PS are designed for graphic artists who are often working on very large images - A.net stuff is comparatively very small, low res work, so what might be advised as "default" or "typical" sharpening settings are just not suited for the special case of small jpgs.
You need to sharpen at the most detailed level - I would suggest 1.0 is much too high - more suited to a small print at 300DPI. Try changing to 0.5, or if you have very "clean" images (no noise/grain) even 0.3 and increasing the amount to the 200-300% range.
As for threshold - don't use it! At these resolutions it is working against you - in effect threshold is saying ignore differences in contrast between adjacent pixels. This can be useful for large scale graphics, but is useless at A.net resolutions where significant detail (eg. a reg letters) may be only a pixel or 2 wide.
I think some use threshold to try and remove grain - or at least avoid making grain/noise more obvious. A better technique is to not sharpen areas which are prone to this (eg. sky) by masking.
Apjung From United States of America, joined Aug 2002, 116 posts, RR: 0 Reply 7, posted (10 years 10 months 3 weeks 6 days 21 hours ago) and read 1482 times:
Ah, thanks for the advice. I can never really figure out how to set the unsharp mask but I have gotten much closer with your advice.
How do you not use threshold? Do you set it at minimum 20 levels?
How do you mask?