15 votes
Accepted

How can I batch crop based on face location?

Here's a solution using python and opencv: This will crop all the faces it finds in the jpeg photos in whatever folder you run it in, with the padding specified by the left, right, top, bottom ...
  • 1,050
14 votes
Accepted

How to choose the most appropriate composition?

You know when to stop when you are satisfied with the result. There's nothing more to it. It is your image, your feelings, your point of view, your way of expressing yourself. I don't think there's ...
  • 1,031
11 votes
Accepted

What will I lose by switching from FX to DX mode (with an FX lens)?

Your 200mm will still be a 200mm. It will project the same image on the sensor. In DX mode, all that will happen is the camera will throw away the outer areas of that captured image and retain what ...
  • 33k
11 votes

Is it better to crop in Raw than JPEG?

Note that you can crop JPEG images without having to reencode them if you use tools that work with the JPEG format, such as jpegcrops, jpegcrop, or jpegtran - these tools perform lossless operations ...
  • 213
9 votes

Is it better to crop in Raw than JPEG?

When shooting JPEG you usually have to option to select the size and quality of your image. For instance with Nikon cameras you can select Large and Fine. This option will give you the maximum ...
8 votes
Accepted

Cropping images in post-production - how important is the image ratio?

Aspect ratio is only critical when matching to one printed paper size, or maybe to full screen monitor shape. Only one ratio fits another shape. And since many shapes exist, no one ratio number is ...
  • 12.6k
7 votes

How to get a full-screen preview of a cropped area in RawTherapee?

I just discovered a way to do this. I'm using RawTherapee 4.2, but from your screenshot, I think this feature is in the version you used, too. It's in the toolbar just to the top right of the image. ...
  • 141k
6 votes

What things should one take into account when looking at cropping a photo?

I found this question 9 years after the fact, but I just liked how many things the original photo said to me. It's a really good example of "What do you want it to say?" so I thought I'd have a go at ...
  • 20.9k
6 votes

How can I batch crop based on face location?

Thanks to @Ryan's answer which I adapted 5 years ago, I automated most of my first desk job. It's now the open source package autocrop on PyPI, and can be used from your terminal, or through a Python ...
6 votes
Accepted

Is it possible to shape an image in a non-rectangular shape?

Every image format (JPEG, PNG, TIFF, etc.) that I know of can only represent rectangular images. This means that unless you define your own image format, this simply cannot be done. The only thing ...
  • 995
6 votes

Is there a difference between increasing focal length vs. cropping?

From an idealized perspective, cropping and enlarging is functionally identical to zooming. In reality, of course, you lose pixels, and you probably lose real resolution as well since you are ...
  • 141k
6 votes

How can I improve the crop on this photo?

I had a similar qestion a couple of years ago - How to choose the most appropriate composition? You find yourself chasing in circles trying out different things, yet not being sure which is 'right'. ...
  • 20.9k
5 votes

What's the best way to choose the aspect ratio: in-camera JPEG or RAW and cropping?

As the sensor is 3:2 that's the natural size to choose when shooting. Cropping can be done in post, where you have any option you want. If you crop when you shoot you waste pixels. In my experience ...
5 votes

Why did the store crop my images for 4x6 prints?

I'm assuming you probably used a compact type camera with an image shape of 4:3 (long side of image is 4/3 longer than short side, which describes a "shape"). But a 6x4 print is the shape 3:2... ...
  • 12.6k
5 votes

Is it better to crop in Raw than JPEG?

When you crop an image you inevitably lose resolution, as you delete parts of the recorded image to better frame the remaining. This will become more noticeable when you enlarge the resulting image on ...
  • 2,129
5 votes

Is it better to crop in Raw than JPEG?

How much cropping did you do, and what is your definition of "a lot of resolution?" The answer is always "doing everything in raw is better," always, simply by definition. It is never better to use ...
5 votes
Accepted

Why Is Sigma DG lens cropping on Nikon D810?

It's possible the lens is miscommunicating with your camera. If the camera's Auto DX crop setting (under Shooting Menu > Image area) is set to "On", and if somehow your camera is interpreting the lens ...
  • 31.2k
5 votes

How to choose the most appropriate composition?

I just thought I ought to add what finally happened to that crop/composition. Caleb's comment made me think - "What are you trying to convey with this image?" Answer - Big flower! In. Your. Face. ...
  • 20.9k
5 votes
Accepted

Should I crop photos from a prime instead of using a zoom lens?

Short answer Bright, sharp primes, when paired with high-resolution sensors, can be a viable alternative to slower, variable aperture zoom lenses and enable effective zooming. Constant aperture ...
  • 231
4 votes

How can I batch crop based on face location?

Disclaimer: Im the developer of this tool. You can use Face Crop Jet to detect and crop faces from photos in Bulk.Images of any Format or Size is supported.Faces will be detected and cropped ...
  • 49
4 votes

How can I make a zoomed in copy of a photo and save it on my Nikon SLR?

With the current firmware of the D3200 you can't crop the image arbitrarily, you can however trim to the aspects (3:2, 4:3, 5:4, 16:9 and 1:1). This can only be done to sizes in certain steps only. ...
  • 8,208
4 votes

How can I automatically apply smart cropping to hundreds of coin photos?

This will probably require a bit of scripting or programming. Read up on the Circle Hough Transform. Basically, it detects circles in an image. While the maths are quite complicated, you can probably ...
  • 31.2k
4 votes
Accepted

More megapixels to compensate for small zoom (Or: How good is Sony's Smart Zoom?)

Cropping and zooming are basically equivalent, so this is easily calculated. Zooming in 2× — like, focal length 36mm to 72mm — is like cutting the frame in half. Of course, that's each dimension, so ...
  • 141k
4 votes

More megapixels to compensate for small zoom (Or: How good is Sony's Smart Zoom?)

However, it costs much more than I was planning to pay. As the size of the sensor increases the cost of the lens needed to provide an equivalent picture (same field of view, or depth of field, or ...
  • 170k
4 votes

How can i uncrop a selfie where my head's cut off?

The short answer is no, a photo is just some recorded data and if you've only recorded 2/3rds of your head, you never had the data for that last third so there's no way to get it back. The long ...
  • 141
4 votes

Can I crop to an exact size in Darktable?

Yes you can crop to an exact size by dragging the sizing around manually and eventually get it right on what you need but doing it repeatedly soon gets annoying. To "input an exact size" I had to ...
  • 41
4 votes

Why are my daughter's wedding pictures cropped when trying to print?

This likely happens because the "aspect ratio" of your pictures doesn't match the aspect ratio of the print. High-end cameras typically produce pictures with a 3:2 aspect ratio: on landscape mode, ...
  • 17.7k
4 votes

Using a full frame camera in crop mode decreases low light performance?

No, there is no difference between crop mode or cropping in post. Pretty much every image characteristic comes down to light per area. If you record the subject the same size (with the same exposure ...

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