Is it possible to send a DNG to from LR4 to PS6 as a TIFF? of so how do I do it?

Question

When I use Topaz plug-ins in LR4, the image comes back with only 10% of  the pixels remaining. It has been suggested by Topaz Help to transfer images to PS6 from LR4 without LR4 adjustments and see if it still happens. Unfortunately my DNG files cannot be sent to PS6 without adjustments. Is it possible to convert DNG files to TIFF so the option becomes available to send it to PS6 without adjustments?

Answer 1

I am not certain what you mean by "pixels of 1.7 by 1.1" but if you mean 1700x1100 pixels, that is indeed 1.87 Megapixels. I personally think the straight pixel dimensions are a better (cetainly a more usual) way to express this kind of thing.
A 1.87 Megapixel  image (of these dimensions) opened into Photoshop reports its theoretical document size on the status bar, if set for that: when I tried this just now, it reported "5.35M".
It is important to note: this is a notional saving filesize without compression, in Megabytes, and does not refer to Megapixels (really they should make this clearer, by putting "Mp" or "Mb" explicitly, instead of the more confusing "M").
I don't see how you would have reached 9 Megabytes with such a picture unless there are additional layers present, and/or, resampled pixel numbers.
If you have somehow reached 9 Megapixels from those starting dimensions, the picture must have been resampled somehow along the line, to give it more pixels (often, this comes of altering resolution while preserving print size - either in "image size", or in Crop).
Another display option for the same document status bar, shows pixel dimensions - which will confirm this for sure.
Depending on your printing process, I would suggest you take 180ppi as more or less the coarsest acceptable for printing on paper, and perhaps 90ppi for printing on canvas. These figures accept some crudeness in return for maximum size, but still most likely look OK for general purposes.
1700px wide at 180ppi is 9.44 inches wide (paper) and at 90ppi is 18.88 inches wide (canvas). The other dimension correspondingly smaller. Many may feel this is pushing things a bit, but if you can make a real sample you may be pleasantly surprised - to some extent it depends on the nature of the image, and on what it is being printed for.
If feeling more picky, you might instead compromise on say 240 ppi (still in a context where you don't have a lot of pixels available) which gives you a paper printing size of  7 inches wide in, typically, good quality.
So that tells you the printing size range your image will support. The image can be upsampled to a specific higher PPI (and correspondingly larger pixel dimensions) for printing purposes, at that size - but this does not add further to the enlargeability of the picture detail it contains - only present that at its technical best, and allow you to tweak that further with sharpening, for the physical size selected.