Interpolating 300dpi TIF files with 85lpi into Pagemaker document 2

[papajoe]

The dictionary defines Interpolation; in·ter·po·late (¹n-tûr“p…-l³t”) v. in·ter·po·lat·ed, in·ter·po·lat·ing, in·ter·po·lates. --tr. 1. To insert or introduce between other elements or parts. 2.a. To insert (material) into a text. b. To insert into a conversation. 3. To change or falsify (a text) by introducing new or incorrect material. 4. Mathematics. To estimate a value of (a function or series) between two known values. --intr. To make insertions or additions. --in·ter”po·la“tion n. --in·ter“po·la”tive adj. --in·ter“po·la”tor n.

Through numerous inquiries about changing the dpi and Lines Per Inch (lpi) on TIF photos/graphic...so the commerical printer folks can photocopy them to metal plates and then print them to newspaper size (9" by 17&quot, I've stumbled across the term "interpolation." I import my phtos (taken on my Mavica Digital Camera) into Adobe Photoshop 5.0LE and change the JPG format from 72 dpi to 300 dpi TIF. I then change to Grayscale, size my photos, and then go to Page Setup to change the lpi to 85 Save Screen mode. I then check the box marked "Interpolation."
However, this 85 lpi mode does not hold when I import the photos into my Pagemaker 6.5 documents. It seems very antiquated to have to take my photos to the commerical printers and have them scan them into MAC format--print them out--then actually paste (hot wax) the same to the documents before copying them to these metal plates for printing. I feel with a Digital Camera, Pagemaker and Photoshop I should be able to perform all tasks required for these commercial printers to copy my end products.
Any advice or suggestions. To suggest that I merely find another commercial printer doesn't help--It seems they all use MAC setups and follow that basic technique. Is it possible that I might have to buy a Post Script Printer? I currently use an HP LaserJet 1100 and get excellent quality. It's just that this 85 lpi format does not hold when importing in Pagemaker.
Thanks for any assistance. Joe Coppinger, Perris CA PapaJoe32@aol.com

 

[carlow]

Sorry but you don't have to use the Page Setup command in Photoshop.

Just resize the photo's and the dpi's, save them as a tiff, put them in your Pagemaker file, send your pagemaker file with the tiffs to your commercial printer.

They do the settings of the lpi's depending on their hardware. It is not important that you do that or include that into the Photoshop file with your page setup command.

Your page setup command is only important for your printer. When making Photoshop files ready for use in a lay-out program don't make them device depending.

grillhouse

 

[papajoe]

Grillhouse: Then you're saying that I only need to use the Inage Control portion of Photoshop 5.0 LE--and set my dpi at 300? Where the Auto control is concerned in this same section, for a 300 dpi photo, when setting the Auto function at 85 LPI, it automatically changes the dpi to 170. I'm not trying to be difficult--but from your suggestion and advice--you're saying to merely change the JPG Photo from 72 dpi to 300 dpi, save as TIFF, print a copy and then take that to commercial printers along with my text documents? The commercial folks will then scan my TIFF photos, size them to the spaces I have provsded in my document and then print my final product (bulletin)?
I was wondering if there was a printer or program that would enable me to do everything at home and then take finished product to commercial folks for printing?
Thanks for the info. I look forward to your reply.
Joe Coppinger/Perris CA PapaJoe32@aol.com

 

[papajoe]

Grillhouse: "Just resize the photo's and the dpi's, save them as a tiff, put them in your Pagemaker file, send your pagemaker file with the tiffs to your commercial printer."

Once again...I should complete my bulletins, including all text, along with [presized blank squares] for photos. Process my photos via Photoshop (crop, change dpi to 300, touch-up and resize), and print thme separately?

Basically, this is what I've been having to do. It just seems a waste of time and effort relying on someone else to rescan my photos and edit them properly.
Joe Coppinger/Perris CA <papajoe32@aol.com>

 

[carlow]

Why do you wan't to print them and bring them to your end user. Just put the tiffs on a disk. Deliver the goods digitally.
If they wan't to set changes to your photographs that are specifically needed for their printer, let them do it starting of with the digital file.

Grillhouse

 

[zefir]

PapaJoe: about interpolation:
An image is defined in araster gid, e.g. 1000x1000.
In each raster point is a &quot;stake&quot; for r, then for g and b.
Put elastic skins over all the stakes in r,g and b separate.
Now you assign a new scaled grid, e.g. 800x800,
or you rotate the image grid.
Search the height of the new stakes in the new raster
points on the skin. These are the interpolated values.
The skin can be piecewise a plane: bilinear,
or a curved surface: bicubic.
The interpolation handles rotation, scaling and
perspective transformations.
Upscaling by a large factor will create enough pixels,
but the new image will not be sharp.
Example:

http://www.fho-emden.de/~hoffmann/interpol181100.pdf

Some people try Genuine Fractals for upscaling by more
than factor 3 .
Hope this explains Interpol. in Image Processing ! ---G.Hoffmann

 

[papajoe]

Thanx Grillhouse and zephir. I copied my 8-Full Page, 10MB IBM Scottish Rite Bulletin to my I-Omega Zip Drive (100MB Disk), along with separate TIFF Photos that I wanted placed on certain pages. The commercial printers use Macintosh, and I wasn't sure if they could convert those TIFF photos saved in IBM format. I'll find out on Monday.
Thanx again...

Joe Coppinger/Perris CA <papajoe32@aol.com>

 

[papajoe]

Grillhouse & Zephir: I purchase a HP &quot;H-3200-M&quot; Laser Jet Printer and believe my problems are over. With Photoshop 5.0 LE, I converted JPEG photos from my Mativa Digital Camera to TIFF graphics (after setting size, I also went to Page SetUp and reset LPI to 85). I then opened a new page in PM6.5 and then &quot;Placed&quot; a few of these TIFF photos. I entered a bit of text and then sent them to my new Post Script Printer. They came out great and when I placed my &quot;Linen Tracer&quot; on the printed page--the lines were spread properly at 85 LPI.
The next step will be to take my completed Bulletin to the commerical printers and see if it transfers onto their metal plates and holds the 85 LPI on the final print out. I'll let you know in a week.
If the transfer doesn't work--I supose the other option is to follow your earlier advice and take touched-up photos on a separate disk.
Thanks...

 

[zefir]

PapaJoe: thanks for the feedback ! --G.Hoffmann

 

[fjb]

How do I save a document I created in Pagemaker 6.5 as a TIFF?

 

[carlow]

Hi,

Sorry but that is impossible. If you wan't to export a Pagemaker file to import into another application you can do that as an eps, or an pdf file.

..

grillhouse

 

[papajoe]

Grillhouse:
You may think it's impossible--but this is what I do...
I first edit my JPEGs in Photoshop 5.0, including size and dpi (300)..then I set the LPI to 85 and check Interpolation. Next, I import (via Place command) into Pagemaker 6.5. I set my printing parameters in PM thus: I check &quot;Write Post Script to File&quot; and Check EPS. After saving, I go back into print parameters and uncheck &quot;Write Post Script to File.&quot; This sets previous commands in background, but my whole newsletter prints via my HP 3200M Post Script Printer perfectly. When I check the photos on final copy (using Linen Tracer), the LPI holds at 85.
This accomplishes tow things...Firstly, I can place and edit photos exactly how I want them, and secondly, I don't have to pay the commercial printing folks for the additional service.
After reading the various responses to my original plight--I read further in Pagemaker and Photoshop--and then tried a few experiements. The aforemebntioned technique really does work... Caper Card in San Bernardino transfers my final product to metal plate and goes straight to print (newspaper fashion). PIP in Moreno Valley simply rescans my final copies and reproduces in via their Post Script copy machine. The only task I have left is to ensure I take good digital photos of events--so as to be able to edit them to size and TIFF for my Pagemaker placement.

BTW...I still haven't heard any suggestions about how to crop pictures and change backgrounds with PhS 5.5....

Thanks...

PapaJoe32@aol.com

 

[papajoe]

Oh: I forgot...to print at a different LPI value--be sure to have color mode turned on so that the LPI will be recognized. I save my photos for placing in Pagemaker 6.5 as TIFF and set them at 85LPI. It seems after importing them into Pagemaker via &quot;Place&quot; they are reset by PM to 60LPI. At any rate, both commercial printers satisfied with my end-product thus far, and don't have to do anything except copy my final bulletins and print.
PapaJoe32@aol.com