Tag Archives: GIMP

How big is the 24M image?

Posted on March 17, 2017 by janpenguin

I’m still learning about features of Sony A6000.  Shooting in raw mode creates about 24M bytes of ARW files. The image size is 6000 x 3346. Large format of JPEG file has the same size. My new HP monitor has … Continue reading →

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I got a 105 mm f/2.8 prime lens

Posted on March 11, 2017 by janpenguin

The lens is ASAHI PENTAX TAKUMAR 105mm f/2.8, M42 mount. I bought it from an eBay seller in Japan. 24M Mar 11 09:40 DSC00374.ARW 28M Mar 11 09:56 DSC00374.png 35M Mar 11 10:55 DSC00374-M.png I created a 6k (6024×4024) image … Continue reading →

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Reference photos of motorycle riding

Posted on December 30, 2014 by janpenguin

Reference photos for street rider by Hughe is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Based on a work at http://wp.me/p1fjgj-1vI. Permissions beyond the scope of this license may be available at https://butterflyofdream.wordpress.com/. Image process steps Motorcycle: 2006 … Continue reading →

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Video color correction using ffmpeg, GIMP, ImageMagick

Posted on October 13, 2013 by janpenguin

Excerpt from Openshot Users Forum Yes you will and up with 1000’s of temp jpg files but it’s not as bad as it sounds. Computer does all the work while you are out doing something else. Below are two bash … Continue reading →

Posted in GNU/Linux | Tagged , , , , | 1 Comment

How to turn off auto rotation of photo image in GIMP 2.8?

Posted on October 17, 2012 by janpenguin

When you take photos in vertical angle, the camera flips images to store. GIMP checks EXIF data when it opens JPEG image file to determine it’s rotated or not. You will see or see the dialog window. According to the EXIF … Continue reading →

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Star photos

Posted on October 16, 2012 by janpenguin

2012:10:12 01:13:11, f/4.5, 8.000, ISO 400 ufraw (Auto AB), GIMP (Red Eye removal, Antialias, resize 50%) 2012:10:12 01:14:01, f/4.5, 113.000, ISO 400 ufraw(Auto AB), GIMP (Red Eye removal, Antialias, resize 50%) For long exposure night photo, it’s better to save … Continue reading →

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Photos of 10/5/2012

Posted on October 6, 2012 by janpenguin
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Sketch Effect – change photo into pencil sketch

Posted on July 29, 2012 by janpenguin

I followed the tutorial here. Steps: Duplicate a layer from the background Activate the layer Apply Gaussian Blur Image > Colors > Invert Change opacity of the layer  to 50% Merge down the layer Colors > Levels Colors > Desaturate … Continue reading →

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I got overexposure problem with Nikon 300mm f/4 lens.

Posted on July 21, 2012 by janpenguin

When I use this lens, the camera poorly handles exposure level of images at infinity distance. Here is what I found about overexposure problem in manual lens. Paul Holman says: The metering doesn’t work properly when the iris is set … Continue reading →

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Nikon 300mm f/4 photos

Posted on July 19, 2012 by janpenguin

Close Focus: 9 feet or 2.5m. Aperture range (f number): 32, 22, 16, 11, 8, 5.6, 4 Aperture mode (Av) doesn’t seem take good images. It set the shutter speed automatically. Do I need to play with Rebel’s aperture value … Continue reading →

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