Likewise. DR is switched off and only used occasionally. Dust seems to be a minimal problem.

I would expect the Tamron and Pentax lenses to be in a different league of performance. The DA* lens is a top quality professional standard optic. Tamron make good and sometimes very good serious amateur optics.

That's my perception anyway!

One flabbergasted George, well done Sir!

And a nice bit of judging by the way!

George knows what to do next....

The Rebel

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Previously when a new format for film has emerged, such as 110 or 126, then no-one has batted an eyelid over the new focal lengths needed.

The reason it's become an issue with digital is that there are so many different sensor sizes, so the standard lens for each one will be different. Quoting field of view has been mooted many times in the past, but nobody has ever liked it. Far too difficult to deal with, much worse than focal length.

However, we'll soon get used to the new figures and I don't think about "35mm equivalents" at all. In fact, I don't really think about the focal length much, just am aware of which lens to pick up for which purpose! Then you look through the viewfinder until you see what you want.

As time goes on, this will be increasingly true for more and more photographers.

Actually pentax lenses, corectly, are marked in the actual focal length. This remains the same for a lens regardless of what format you put behind it to receive the image.

Now imagine that the image circle projected by the lens is as big as we need for anything, just for a moent. Let's say that's enough for a 5"x4" negative, quite huge. Now substitute ibstead a tiny APS-C sensor and it only sees the very centre of the image, the bit that falls on it. So effectively it looks like a telephoto lens. Now we don't need all that extra image circle for the smaller format, so we can design a much smaller lens that only covers APS-C and it's no longer much use on our larger format.

But the focal length is still the same.

"35mm-equivalent" figures are only quoted to give us an idea as to what the lens will look like compared to the 35mm format we were used to. Frankly, that's becoming forgotten now and I'm pretty sure we are getting used to lnowing what a 18-55mm lens will do without thinking, "That would need a 28-80mm lens to get a similar angle of view on my 35mm SLR."

Hope that helps!

Actually very important to use Photomount for permanent mounting of photographs. Spraymount will result in prints detatching after a short while.

I have a similar cutter and raise the bar slughtly when inserting the print. I've never had any scratches, it just needs normal care.