Hi,

Just started using GIMP, just found this forum, have a question I haven't been able to answer through my own research.

Let's say I use the Rectangle Select tool (in "Add to the current selection" mode) to select 10 different regions of my image.  Then let's say I want to change the size or delete rectangle selection #7.  How do I do this?

I know that I can use Select > None or do a Shift+Ctl+A to delete ALL of the rectangle selections, how do I edit or delete just ONE rectangle selection?

So, two questions:
   

1. How can I delete one of several selections without having to start over?
       
   
2. How can I edit a particular selection, such as changing its size?
   

Can someone please explain what is meant by 'animated' brushes, as opposed to regular brushes?

I began using Krita some weeks ago, after seeing it mentioned on here, and for some time suspected I preferred it to GIMP, but then when I was unable to get a particular effect/look to my work I switched back to GIMP and now prefer it to Krita.

However, Krita does have a few brushes that GIMP doesn't and I'm trying to find out if I can get something similar.

Unfortunately I don't know what you would call them, or whether they're 'animated', but their icon is a pencil tip and they're used for creating what I think are fractals. As you draw with them, very fine fractals will branch off creating nice wispy patterns. The others just seem to be variations on this.

I browsed the GIMP brushes on deviant art and found a few Fractal Brushes packs, and the previews showed what seemed to be the exact same effect, but when I installed them and went to use them, they're simply pre-rendered stamps of a fractal pattern, rather than a free-hand brush.

This is the kind of thing, but I need the brush to be free-hand rather than pre-defined stamps as these are.

Fractal Brushes

If anyone can offer any advice or links to the sort of thing I'm looking for it would be great.

Can I draw lines and arrows with Gimp?

Is there a primer available, operated via key words?

I am going on a trip to the Yucatan in May and want to take good pictures inside some of the Cenotes (sinkoles that expose groundwater underneath). Some of these cenotes are underground with not much light (Beams of light from the sun come through from the holes at the top of the cave, and some stationary artificial lighting is provided from the people who work at these caves as well).

So my plan is to use my Rokinon 12mm f2.0 with my Sony A6000 on a tripod and set it to max aperture and long exposure, with maybe ISO of about 400 to 800. Do those settings sound about right to get some good low-lit cave pictures? Would there be any reason to lower the aperture? Keep in mind, I do not plan on going any further and setting up external light sources, etc. The cave should be lit enough to be able to grab a decent picture with long exposure.

Anyway, the more important question or concern I have comes into play when I want to get some action shots. Long exposures and people moving don't mesh, so I have to take a short exposure frame with flash from the same angle with the person, and then insert that person into the long exposure photo. For example, freeze the person when jumping into the water (in the air mid-jump). I think the only way to do that is with a computer program using layers or masks, correct? I don’t want to purchase anything, and I think this can be accomplished with GIMP on my Macbook pro.

Last night, I tried masking myself out of a picture (or whatever the term is), but it was very hard to do in terms of being precise. I tried to fiddle around with the lasso and the different detections (color/shape/contrast), to no avail. Maybe part of that was because I was on a small laptop without using a mouse. But I think most of it was because I am an extreme beginner and this is my first time playing around with photo editing tools.

Can someone please point me to some detailed Gimp tutorial videos either showing how to accomplish exactly what I want from start to finish (Add the frozen person from the short exposure frame to the long exposure frame), or if you don’t know of a video that explains all of that, then maybe some tutorials on something similar, like how to precisely mask out people.

UPDATE: I have included a picture of what I am trying to accomplish. The cave in question is pretty dark, so I am almost positive he used the method of layer masking to insert his self into a long exposure shot of that cave, from a short exposure flash induced shot with the same angle

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I have an image with a white background.
How do I make it a transparent background?

   
I'm trying to make a new decal from my vintage outboard. I'm using Gimp 2.8.
It's almost good enough (for me) but I'm having trouble getting the bottom border
radius' looking natural like the top corners, but otherwise, I have it shaped like
the original. Help or suggestions appreciated, Thanks!

P.S.- My off white "background" make it hard to even distinguish the
border on this forum. ..... not sure what I can do so you can see
the problem better.

Hello

I do hope someone can help me with this problem that is really frustrating:

GIMP works great in most instances and I have been using it for a few years without any real glitches.

However this past few weeks, the LASSOO TOOL has been plagued with glitches: straight lines are usually fine, but anything using a curve usually sees the lassoo tool closing far too quickly, making undesired shapes I have to close and 'fix' later,

Up until very recently, the lassoo tool worked like a charm, even with rapid use.

I done a clean reinstall of WINDOWS last week [nothing to do with this problem] and the oversensitive closing/ bad lassoo drag is still there .

So I dont think its my computer which seems to work fine otherwise.

I also reinstalled GIMP 2.8 and even went back to 2'6 to see if that worked better, but alas it is still the same.

Is there a recent setting or something I can adjust, or any other steps I can take to get the lassoo tool working well like it used to? I can still work, but I am slowed down a lot compaed to what used to be standard work practise.Will check for responses later.

Attached is the sort of images I create with the help of GIMP:

Kind Regards, Rob
This post has been edited by Rab Smith: Today, 10:50 AM

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Hello,

does anybody know about an accessible systematic comparison between Krita and GIMP?

I know about the general differences like photo editing - GIMP and painting-Krita and the raster graphics editor comparison on wikipedia, I know some differences from my personal use, but maybe somebody has a more systematic argument list with ad- and disadvantages?

Or what could be arguments for GIMP and against Krita? (Personally I'm using both of them but in case of less experienced users and less flexible workspace I need to decide and argue)

Thanks and regards,

Adriana