Showing posts with label aperture. Show all posts
Showing posts with label aperture. Show all posts

Monday, 4 July 2022

Geeqie Data Overlay Customisation

Geeqie is a great application for viewing photos.

 

Its easy to display photo data (e.g. EXIF) and even chose how & what you want to display.

So this post explains how to do it!

Monday, 6 July 2020

Photography: I like manual lenses

Manual lenses can be a lower cost alternative to those that support automatic operation.


The disadvantages are pretty obvious.


But I still prefer to manually set the camera before releasing the shutter.

Tuesday, 20 November 2018

Fixing my Pentax K-30 exposure problem: #3 one problem leads to another!

Having reassembled my K-30 with the replacement solenoid, it was time to test it.


Unfortunately it failed the test, with all photos underexposed.


I think my problem was due to a truly stupid mistake.

Monday, 5 November 2018

Fixing my Pentax K-30 exposure problem: #1 prep

The exposure problem on my Pentax camera has been gradually getting worse.


It is now more likely to produce underexposed images than correctly exposed ones.


So its time to open it up and have a go at fixing it.

Wednesday, 10 October 2012

Photography: #1 Exposure Explained

When you make the transition from "point and shoot" to SLR photography, there is one very important subject you really need to get to grips with:-

      ***   Exposure   ***

 

Using an SLR camera in "manual mode" puts you in total control, not only of composition and focus, but also exposure.


When you take a photo, you allow light into your camera. Assuming you are using a "digital" camera, the light reaches a "photo-sensitive sensor" which produces an electrical output, and ultimately this is processed into a picture. If this picture is correctly "exposed" it will not be too dark or too light.

"So what's the problem..." I hear you say,  "...if its too dark or light I can just use the Gimp or PaintShop Pro to adjust the brightness?"
The problem is that you will lose detail if your initial photo is too dark or too light. Adjusting the brightness will not recover that lost detail.