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- Mike
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OK, novel little experiment today....
Twenty years ago, I bought a Jessops, Pan & Zoom Slide Duplicator lens for my OM10. It turned up last week, up in the loft, while I was looking for something for my daughter.. And I had a wonder... a wonder that saw me hold it up against the Nikon Digital, and to see if I got anything from it... I did, and knowing it was a stock lens on a T-Mount, ordered an adapter to re-mount to the Nikon, properly, which arrived this morning.
Calibrated to copy at 1:1 on full frame... on crop sensor D3200, at 1:1 it reproduces at the same magnification as 1.5 did on the full-frame, so I could just about squeeze a 110 neg into the frame, but I was only ever going to get sections of a 35mm.
BUT.... in order to make sectional crops; the duplicator has a panning slide holder... so I reckoned, that If I was smart, I could take four pictures, quartering the original 35mm frame, and as they were all taken at the exact same angle in the duplicator, they would stitch rather well, in Photo-shop panorama merge.
This is the first shot at proving the theory then. took nine shots to cover the entire 35mm frame, not the anticipated 4. Then stitched in PS5, cropped down to that after taking the neg-holder out of the image, at aprox 7,ooo x 10,ooo pixels or 70MPix! (re-sized here to 900x600ish)
Just for note; Neg. Edge Says Kodak Gold 200. And I have no clue as to what camera it was taken on, let alone lens or apature and stuff. Negs just happened to be to hand and were pulled out of a draw and left with me after my Gran died... thirteen years ago! Subject is my Gran and my Dad, and I suspect that it was taken in Vancouver, probably around 1982 or so.
OK, tighter crop, about 1/4 frame and re-sized, I got this, which still had a larger pixel count than my camera.
Cropping tighter still, and at original resolution, unsized here, we have close up detail of the camera my Dad had round his kneck. (Any-one know what it was?)
Hmmmm.... looks rather 'soft'... and zooming in, it is.... its 600x400 pixels but it LOOKS like 75x50! it's re-pixilated, as though its a low res enlargement, each original pixel re-made in blocks of 8x8!
Intreguing! So.... my 70Mega-Pixel montage... is actually only about the resulution of a 10MPix original!
Lets look at one of the original section shots...
Hmmm... well that's roughly the same crop, and you might be able to better ident the camera from it! Again, its original res, at about 400x600 ish, but no pixel blocking.......
Twenty years ago, I bought a Jessops, Pan & Zoom Slide Duplicator lens for my OM10. It turned up last week, up in the loft, while I was looking for something for my daughter.. And I had a wonder... a wonder that saw me hold it up against the Nikon Digital, and to see if I got anything from it... I did, and knowing it was a stock lens on a T-Mount, ordered an adapter to re-mount to the Nikon, properly, which arrived this morning.
Calibrated to copy at 1:1 on full frame... on crop sensor D3200, at 1:1 it reproduces at the same magnification as 1.5 did on the full-frame, so I could just about squeeze a 110 neg into the frame, but I was only ever going to get sections of a 35mm.
BUT.... in order to make sectional crops; the duplicator has a panning slide holder... so I reckoned, that If I was smart, I could take four pictures, quartering the original 35mm frame, and as they were all taken at the exact same angle in the duplicator, they would stitch rather well, in Photo-shop panorama merge.
This is the first shot at proving the theory then. took nine shots to cover the entire 35mm frame, not the anticipated 4. Then stitched in PS5, cropped down to that after taking the neg-holder out of the image, at aprox 7,ooo x 10,ooo pixels or 70MPix! (re-sized here to 900x600ish)
Just for note; Neg. Edge Says Kodak Gold 200. And I have no clue as to what camera it was taken on, let alone lens or apature and stuff. Negs just happened to be to hand and were pulled out of a draw and left with me after my Gran died... thirteen years ago! Subject is my Gran and my Dad, and I suspect that it was taken in Vancouver, probably around 1982 or so.
OK, tighter crop, about 1/4 frame and re-sized, I got this, which still had a larger pixel count than my camera.
Cropping tighter still, and at original resolution, unsized here, we have close up detail of the camera my Dad had round his kneck. (Any-one know what it was?)
Hmmmm.... looks rather 'soft'... and zooming in, it is.... its 600x400 pixels but it LOOKS like 75x50! it's re-pixilated, as though its a low res enlargement, each original pixel re-made in blocks of 8x8!
Intreguing! So.... my 70Mega-Pixel montage... is actually only about the resulution of a 10MPix original!
Lets look at one of the original section shots...
Hmmm... well that's roughly the same crop, and you might be able to better ident the camera from it! Again, its original res, at about 400x600 ish, but no pixel blocking.......