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There are a few different philosophies about deleting images. Some people like to delete images that they think are bad, so that they don't drown in image glut when they start their post-production. Other people say you should never delete an image, because you never know whether it might be useful or not until later. For the sake of this discussion, let's split the difference, and say that there will occasionally be images that you know will have zero utility later. Those images where your finger is in front of the camera, or you left the lens cap on, or something like that. Your camera provides a number of ways to delete images, as well as to lock images, so that they can't be deleted.
Earlier, I was very adamant about how after you've dumped the images from your card, and you're ready to erase the card, you absolutely need to use the Format card command, and I stand by that; that's still true. Nevertheless, there are still times when you'll find a use for the Erase images command, which is here on the first page of the playback section. Let's go in here, and you will see a few different options. First one is Select and erase images. This allows me to select and erase specific images on the card. I'm going to select that. Now what I've got is a normal playback interface.
I can scroll around, and find an image. Here's one that's blatantly out of focus, so I would like to delete that. If I hit the Set button, it marks it for deletion. So it put the checkmark on this image, and shows me that I currently have one image that I want to delete. So I'm just going to keep looking around here. Here are two images that are mostly the same; I don't need both of them, so I'll go ahead and hit the Set button. Now I have got two images to delete. Once I have picked all the images I want to get rid off, I simply hit the trashcan button, and it asks me to confirm, I'll say OK, and it erases those two images.
So that's the way I can selectively erase, and of course, different people, as I mentioned earlier, have different philosophies about erasing. As we'll see in a little bit, it's possible to specify folders on your card, just as you would on the hard drive on your computer, and erase images only within a folder. Then we get down here to delete or erase all images on a card. Now, I've already said you don't want to use this. If you need to erase the whole card, use Format. However, consider this. You're out shooting one day, and you shoot 600 pictures.
You take them home, you dump them onto your computer, and you forget to erase the card. The next day you go out, and you start shooting again, and you get maybe 20 images in, and you realize, oh my gosh! I forgot to delete those 800 pictures that I took yesterday. Now, when I dump the card, I'm going to have all this extra stuff, and also I've got less space on my card. I've got 800 images less on my card. I need to fix this somehow. Well, you could go in and selectively erase those 800 pictures that you took yesterday, but that would take a long time. A better way is to go up here, and go to protect images.
If I choose this, I have all of these different options for selecting images that I want to lock or protect. I can select images, I can lock all the images in a folder, I can unprotect all the images in a folder, I can protect everything on the card, and so on. I am just going to select a couple of images, and I do that by, again, I am in a normal navigation scheme here, I just hit the Set button, and that locks an image. It's got a little key on it now. Now, what's cool about this is that the Erase command won't erase protected images.
So if I go in here to erase now, and say erase all images on card, it will erase everything except for the locked images. So in the scenario I described earlier, I could go through and lock those 20 or so images that I shot today, and then hit Erase all, and it will erase everything that I shot yesterday. I'm not going to do that erase. After I had done that, I could then come back up here to Protect images, and say Unprotect all images on card, and that will unlock all of those images, so that they will be erasable later.
Note that a format will wipe out protected images, so that really does truly wipe the card. So these are some easy ways for managing images while you're shooting. If you find you're running out of space, you might need to go in and selectively erase some images. If you've got some images that you know are just absolutely duds, and you don't want to hassle with them later, and you've got some time now, you can deal with that on the camera using the Select and erase images command. Finally, there's another way of erasing images, and that's from within the playback mechanism itself. So as I'm reviewing images, if I come across one that I don't like, I can simply hit the trashcan button, confirm, and that image will be erased.
So this is a way that I can erase images as I'm reviewing if I come across a dud. So again, a lot of different philosophies about whether you should erase images, or keep everything. If you decide you need to erase something, you've got several really handy mechanisms for doing that right in camera.
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