What files should i put in a logo pack to give to clients? Should I put small, medium and large version of my logo as well as the vector file.
I think you're on the right track. An .EPS (vector) is a must. I'd personally put .png's in there, making the background transparent. Nothing worse than having a file with a baked in white background unnecessarily.
Also, you should think about whether it is outputted for screen or print. You may want to include a CMYK and RGB versions of the .EPS file.
EPS is a relic at this point. You're better off with a PDF.
I also include PNG and jpeg (because they ask for it if I don't).
The sizes provided should be in response to requirements you've defined with your client: PowerPoint templates, internal documents, email signatures, signage printed in their stores, etc. One full size PDF will answer most of the odd ball stuff that comes up for them.
In addition to the file formats/sizes suggested, a black & white, or a single color version of your logo if it is full color.
Here is What I include:
CMYK (High resolution)
Spot color (if applicable) (High resolution)
Greyscale 1 color (High resolution)
Solid 1 color (High resolution)
RGB (low resolution)
These formats are broken down into two directories. Print and Web. "Print" containing the CMYK, Greyscale, Spot, and solid fortmats in high resolution and "Web" containing the low resolution RGB formats.
The jpg, png, and gif files are pretty much included just so the client sees them. If you don't provide a jpg many clients won't know what the other formats are for. They also want to immediately email the logo or throw it on Facebook and since they are familiar with jpg or png they can use those files.
EPS saved as Illustrator 8 allows for compatibility with many older third party applications, such as sign cutters and embroidery machines.
This may seem like a lot of files to include, but it really isn't. Most of these formats take 5 minutes or less to generate when a logtype is complete. That 5 minutes of time here, saves the client 4 hours or more when they try ans scramble for a format they need when some vendor asks for it.
It would be nice to simply send a pdf or ai files and be done, but in my experience, that only ensures they client returns to you asking for more formats later. My goal is to provide the client,up front, with every possible format they may need.