Picking the ideal aspect ratios and other questions related to aspect ratios

Started Jan 28, 2013 | Discussions thread
OP Sgt_Strider Senior Member • Posts: 2,275
Re: Picking the ideal aspect ratios and other questions related to aspect ratios

AlbertInFrance wrote:

Simple answer.

Any camera has a fixed sensor size and format. A 24MP camera will likely have a 2:3 format
with 6,000 columns and 4,000 rows of pixels.

If you tell the camera you want to shoot square format it still shoots the same but in creating a JPEG it just leaves out 1,000 columns from each side. So a square image only uses 16MP. It will NEVER be able to create a square image with 24MP (ignoring things like image stitching from multiple exposures).

You could build a square sensor, but I don't know of any on the market. I just copied the following from the Hassleblad site as an example:

'Square (29 MPixel) or rectangular (39 MPixel) user selectable image formats. Square format automatically adds a crop mask to the image'

My own camera (Fuji X-E1) gives the option for shooting square, but all it does is adjust the viewfinder image and the JPEG output. The RAW is still rectangular.

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Every photograph is an abstraction from reality.

Right, but I think most people don't care all that much about the resolution. What's more important to you? The resolution itself or the image? You're going to be losing pixels anyways if you decide to crop the image especially if you print. So what's the real issue here?

Interesting comment that you made about the Fuji X-E1. So I just want to make sure that I understand you properly. If you select 1:1 ratio, the viewfinder will appear in a square format and the JPEG output is actually square right? 1:1 resolution? If you import the RAW into Lightroom or Photoshop, will the software recognize that there may be a 1:1 marker on it so that it'll just show the 1:1 overlay? Even if it doesn't, at least you've composed it and optimized it for 1:1 so when you do go and crop it, you won't necessarily crop out part of the image that you do want to keep.

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