G'day guys. This last week I've begun going through my entire catalogue of images with the aim of selecting my favorite 100 which I will reprocess in LR and ultimately, use in my first ever photobook. I've looked into a few companies and like the look of the product offered my MyPublisher...I will make 4 or 5 copies for myself, family and some close friends. I chose MyPublisher because it sounds like they use really high quality archive grade paper and top notch materials throughout. Just wondering if there is any specific advice you guys may have from your experiences making photobooks and printing. The first issue that got my attention was DPI values. I have my EM5 set to 350dpi and sRGb...my iMac monitor is also set to the sRGB color space, Lightroom is also set to sRGB and 350dpi, and, when I edit a tiff in one of the NiK plugins I always ensure that it is also set to 350dpi. My question....does any of this matter and why ? I've noticed looking at the exif data from others on Flickr that although 240-360 is a common range....many vary from this range, and quite dramitically too...I think I've seen as low as 70dpi and as high as 4000+dpi. Why is this ? Am I doing the right thing by keeping everything throughout the process at 350dpi ? Is there a "better" value to work with given that I will send these to print ? Note: I will be using the 'deluxe' sized book which is approx 15" by 11" if I recall correctly. Any help/input would be appreciated as I quite literally don't have a clue with this stuff. Many thanks.