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Old Jan 31, 2005, 10:14 PM   #1
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Hello there everyone...could someone out there please help with fixing the pin cushion and barrel distortion effects that are brought about by the use of a wide angle lens.

I have a .5X WA lens and I have photoshop CS but don't know if that has a means to help me. Any help or link or software would be helpful. Thanks to everyone who helps.

seth
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Old Jan 31, 2005, 10:20 PM   #2
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Funny you should ask... check out my thread right here. Free software + tutorial that does exactly that!

http://www.stevesforums.com/forums/v...01&forum_id=23
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Old Jan 31, 2005, 10:29 PM   #3
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Damn Nick...lol...that was fast. I haven't taken a look at the link yet but thanks for the help man.This forum rocks

seth
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Old Feb 1, 2005, 12:18 AM   #4
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Hey Nick thanks to your help here is my first shot using my wide angle lens...keep in mind that mine is a .5X...so at zero zoom there is so much barrel distortion and so much vignetting that at first I thought that this lens was absolutely useless. But using the software I was able to still salvage enough to make this lens worthwhile. here are the 3 shots for you to see. In all 3 shots camera is on a tripod and nothing has been changed...Shots 1 & 2 are unedited as well just so you can see what this software can do.

This is without the WA lens
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Old Feb 1, 2005, 12:19 AM   #5
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This is with the WA lens...but no editing was done. You can see its almost useless
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Old Feb 1, 2005, 12:21 AM   #6
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This is the edited image using the above mentioned software. This is cropped right out of the WA shot and processed to straighten the barrel distortion.
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Old Feb 1, 2005, 12:41 AM   #7
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indiawala wrote:
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This is with the WA lens...but no editing was done. You can see its almost useless
Forgetting about the subject matter and composition, this is not a bad picture. You are shooting at 17mm, which is about 97% fisheye. Why straighten out an image that is supposed to be that way. Why not get a .7x or 24.5mm where you will get full frame?
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Old Feb 1, 2005, 12:51 AM   #8
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Hey Playlong...my girlfriends father had an old .5X WA lens. This wasn't so much a choice on my part as me just saying YES to getting something for free...lol. I just got a step up ring and tried it out today for the first time. I am a newbie and wasn't planning on a WA lens but considering I got one, I am just trying it out. The fisheye look is ok but I also wanted to see if I could get some managable regular looking shot out of that fisheye...I know that I loose some image data but its still better than not having a WA lens. In fact i think it probably gives me about a .8X working angle.

seth
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Old Feb 1, 2005, 1:01 AM   #9
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indiawala wrote:
Quote:
Hey Playlong...my girlfriends father had an old .5X WA lens. This wasn't so much a choice on my part as me just saying YES to getting something for free...lol. I just got a step up ring and tried it out today for the first time. I am a newbie and wasn't planning on a WA lens but considering I got one, I am just trying it out. The fisheye look is ok but I also wanted to see if I could get some managable regular looking shot out of that fisheye...I know that I loose some image data but its still better than not having a WA lens. In fact i think it probably gives me about a .8X working angle.

seth
Hi Seth

Step rings are death. They were only designed for photographers with many different front lens mounts. You would buy a 72mm set of filters and use them with step up rings to fit all your lenses. If you are going to keep it, I would, get an adapter with the same mount. Take it outside and get some wild shots of common things.

I have a .7x and I get less distortion then your PPfinished product.
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Old Feb 1, 2005, 8:20 AM   #10
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Love a WA lens... I would take a WA with barrel distortion rather than softer edges because it's so easy to correct. Great example of what a WA can do! Barrel Distortion, eliminated. Software makes the lines as straight as you want.
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