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Mathematical question????
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Nov 26, 2017 12:07:16   #
paulrph1 Loc: Washington, Utah
 
The dimensions of a 35mm does not exactly correlate to print size of 8x10 but it does more correctly correlates to a 16x24. What are the exact dimension of 35mm negative in inches? I would like a print of a 35mm size but it cannot be cropped because it was cropped in the camera and there is no room for cropping on the paper. So an 8x10 would be less than the 8 inches on the short side if it was blown up to 10 inches on the width. I am curious as to what size to ask for because they only are locked into 8x10 and in a close cropped portrait they are going to crop out the people on the edge. I am not worried about the frame because I can build it myself. A formula would be nice for future references.

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Nov 26, 2017 12:18:36   #
Neilhunt
 
36x24mm = 1.417x0.995 inches

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Nov 26, 2017 12:19:39   #
PHRubin Loc: Nashville TN USA
 
An 8 X 12 is a full frame print of a 35mm image. I used to get prints that size in my old film days.

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Nov 26, 2017 12:21:23   #
CHG_CANON Loc: the Windy City
 
Are you talking film or digital. The ratio is the issue, not the measurement in inches (nor millimeters, nor parsecs, etc ...)

The typical DSLR is 2x3 as you've already noted for 16x24. An 8x10 image is 4x5. If you're starting with a 2x3 image and you want to control how the cropping occurs on an 8x10 print, then you need to crop the image yourself before sending the image file for printing. You'll lose a bit from the top and bottom (or left & right, depending on orientation) if you just took the middle from the original. But, using a cropping tool, you can control the actual results to the extent the original image provides alternatives ....

If dealing with a customer, you can also so the results of the crop of a digital file in 8x10 as well as demonstrate the alternative options that maintain the 2x3 ratio without having to print anything ...

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Nov 26, 2017 12:22:26   #
PHRubin Loc: Nashville TN USA
 
P.S. A 35mm frame is 36 X 24mm.

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Nov 26, 2017 12:22:32   #
paulrph1 Loc: Washington, Utah
 
PHRubin wrote:
An 8 X 12 is a full frame print of a 35mm image. I used to get prints that size in my old film days.

Thanks I am working the wrong way. I guess I am thinking paper size (from them).

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Nov 26, 2017 12:24:18   #
drmike99 Loc: Fairfield Connecticut
 
The standard full frame 35mm image is 36x24mm. That's the full frame ratio so you can do the math to find the closest measurement in inches to the image you want. Printing out an uncropped full frame image is no big deal for a competent lab. Experience at the Walmarts of the world WILL vary.

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Nov 26, 2017 12:45:45   #
sdentice
 
Another option is to make an 8x10 canvas in PS, make you original smaller by about 1 inch or whatever looks good and insert your image onto the 8x10 canvas. The the cropping will happen on the edge of canvas not your image. I do this with 4x6 prints because I have a Micro 4/3 camera and I can't print an 4x6. I can then cut the pictures to fit my cards. When Wallgreens has a huge sale on 4x6 prints that I use for cards I have to do this, when I only pay about .05 for each print it is worth the time and effort to do this. If I send the image sized to 4x5, the pictures come back looking terrible.
I can always print 8x12 or 16x24 with no problem and no cropping. You can also make your canvas any color to match the photo.

Just a thought

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Nov 26, 2017 12:53:08   #
bsprague Loc: Lacey, WA, USA
 
When I had a darkroom is was 8x10, 11x14 and 16x20. I bought a Canon photo printer and it came with 13x19 paper, which I thought odd.

I built a ratio chart in Exel that I forgot about until this topic.

It turned out that Canon, maker of DSLRs, got the Pro-100 printer and paper right! It is not odd at all. The full frame sensor ratio matches the paper dimension ratio almost perfectly.



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Nov 26, 2017 13:40:41   #
OddJobber Loc: Portland, OR
 
bsprague wrote:
When I had a darkroom is was 8x10, 11x14 and 16x20. I bought a Canon photo printer and it came with 13x19 paper, which I thought odd.

I built a ratio chart in Exel that I forgot about until this topic.

It turned out that Canon, maker of DSLRs, got the Pro-100 printer and paper right! It is not odd at all. The full frame sensor ratio matches the paper dimension ratio almost perfectly.


I didn't understand your chart but here's a fast and dirty. I print 12 X 18 image centered on 13 X 19 paper, which leaves a 1/2 inch border on all sides. Carefully aligning a 12 X 18 mat (a common size), the 1/2 inch border leaves enough room for mounting with no loss of image area. Mounted in a 18 X 24 frame (common size). No custom cuts, easy setup.

Good grief, Guys, I didn't say it was a good image, but I did say fast and dirty. :)
Good grief, Guys, I didn't say it was a good image...

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Nov 26, 2017 14:34:33   #
bsprague Loc: Lacey, WA, USA
 
OddJobber wrote:
I didn't understand your chart but here's a fast and dirty. ...


What the chart is supposed to do is match paper to frame size.

Example 1... A DSLR has a sensor ration (on the chart) of .67. Choosing paper in the yellow box of traditional paper sizes will mean a borderless print will be cropped to fit. You have to throw something away. Picking in the green box you don't have to crop anything out.

Example 2... An M43 camera like I use comes pretty close to yellow box sizes of 8x10, 11x14 and 16x20. Some cropping is needed but not much for a borderless print.

Using an M43 with .75 and 13x19 paper with .68 means I don't get to use all of my sensor for a borderless print.

But, your are right, it is a confusing chart that makes little sense for most situations.

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Nov 26, 2017 21:27:05   #
via the lens Loc: Northern California, near Yosemite NP
 
paulrph1 wrote:
The dimensions of a 35mm does not exactly correlate to print size of 8x10 but it does more correctly correlates to a 16x24. What are the exact dimension of 35mm negative in inches? I would like a print of a 35mm size but it cannot be cropped because it was cropped in the camera and there is no room for cropping on the paper. So an 8x10 would be less than the 8 inches on the short side if it was blown up to 10 inches on the width. I am curious as to what size to ask for because they only are locked into 8x10 and in a close cropped portrait they are going to crop out the people on the edge. I am not worried about the frame because I can build it myself. A formula would be nice for future references.
The dimensions of a 35mm does not exactly correlat... (show quote)


2:3 ratio, digital camera - or shoot photos for the sizes most people are used to 8 x 10, 11 x 14, 16 x 20. Need to plan ahead or crop.
Bay Photo will print any size you want.

4 x 6
6 x 9
8 x 12
10 x 15
12 x 18
14 x 21
16 x 24

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Nov 27, 2017 00:58:29   #
paulrph1 Loc: Washington, Utah
 
Thanks to all for your imput. It has been most helpful. Paul

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Nov 27, 2017 08:58:17   #
Haymaker
 
CHG_CANON wrote:
Are you talking film or digital. The ratio is the issue, not the measurement in inches (nor millimeters, nor parsecs, etc ...)

The typical DSLR is 2x3 as you've already noted for 16x24. An 8x10 image is 4x5. If you're starting with a 2x3 image and you want to control how the cropping occurs on an 8x10 print, then you need to crop the image yourself before sending the image file for printing. You'll lose a bit from the top and bottom (or left & right, depending on orientation) if you just took the middle from the original. But, using a cropping tool, you can control the actual results to the extent the original image provides alternatives ....

If dealing with a customer, you can also so the results of the crop of a digital file in 8x10 as well as demonstrate the alternative options that maintain the 2x3 ratio without having to print anything ...
Are you talking film or digital. The ratio is the ... (show quote)



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Nov 27, 2017 09:55:42   #
BebuLamar
 
CHG_CANON wrote:


If dealing with a customer, you can also so the results of the crop of a digital file in 8x10 as well as demonstrate the alternative options that maintain the 2x3 ratio without having to print anything ...


Talking about dealing with a customer back in the early 80's when I managed a 1hr photo finish lab I had a customer who gave me a 35mm negative and he wanted an 8x10. I couldn't do it. At first I gave him an 8x10 but I had to crop the long side a bit and he didn't like it as he wanted the whole picture. I then made him an 8x12 but he didn't like it either as it wouldn't fit in his 8x10 frame. I then made him a 6.6 x 10 and he didn't like it either as there are white border on the short side. It was film and I didn't have an enlarging lens that can squeeze the picture a bit otherwise I would try to distort the image and see if he would take it but I think he wouldn't like it either.

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