Forum: Poser - OFFICIAL


Subject: Resolution for 35mm quality?

krbtv opened this issue on Jul 11, 2000 ยท 11 posts


krbtv posted Tue, 11 July 2000 at 10:02 PM

What should the "render options" resolutions be in order to receive a jpg file with the same resolution as a 35mm camera? Should it be pixels/inch or pixesl/cm. Does it need to be 72 dpi or 720 dpi or 3500dpi or does it even make a difference? What's the formula - I'd also like to know the dpi in order to emulate a 64mm film camera. Thanks everyone for the help on the other questions.


Chrisa posted Wed, 12 July 2000 at 7:56 AM

Most consider 2400 dpi to be the max resolution for a color 35mm negative. I think this is slightly low... about 3000 would be better. Most film scanners have optical resolutions of 2400 to 2800 dpi. Christine


Jim Burton posted Wed, 12 July 2000 at 9:19 AM

The standard for 35mm scans is 3K x 2K, 3072 x 2048 pixels, 2000 dpi, but dpi doesn't really mean anything while your in Poser, there are no real inches in your computer. a 3K x 2K imagew can be 72 dpi or 10,000 dpi, it is the quanity of pixels that count. The 35 mm image from a good camera is higher quality than can be contained in a 3K x 2K, Kodak will scan a slide for you at 4000 dpi.


momodot posted Wed, 12 July 2000 at 10:22 AM

I am wondering. Does anyone know the ball park figure for how big a file will fit a 1.4Mb flopy disk as a "good" quality Jpeg? 1200x800? Could you tell me the aproximate size in that aspect ratio.



Spike posted Wed, 12 July 2000 at 11:16 AM

momodot; jpg compressoin depends on the image. Also jpg has lots of compression modes. 1:2 1:4 and so on. I just picked up a 3.3 megapixle (2048 x 1536 pixel) camera and it will give me great images in jpg format from 400k - 1.6M or so in size. http://www.olympusamerica.com/product.asp?c=78&s=12&p=16&product=521 I have a 16 meg card in the camera and it will hold 20 images that are of great quality for 8X10 prints. You should be able to fit a graet image on one floppy. also it's good to have a great printer as well like the Epson 1270. http://www.epson.com/printer/inkjet/sty1270/ Hope this helps

You can't call it work if you love it... Zen Tambour

 


Nance posted Wed, 12 July 2000 at 11:37 AM

Kodak claims the equivilent of 20 megapixels per 35mm frame for Kodachrome film. Works out to something like 4000x5000 pixels. Poser only renders at 3090 max pixels. DPI does not matter until you are printing out on paper. Hirez film scanners are advertised that do up to 8000. (I know that does not add up if the film will only do 4K x 5K but those are the numbers that are out there)


momodot posted Wed, 12 July 2000 at 12:13 PM

3.3 megapixle (2048 x 1536 pixel) = 400k - 1.6M Thank you Spike, that is just the information that will help me. I have been doing my art for the web at under 400x600 since I have no printer, I was wondering what a good size would be if I want to someday print them, but my only back-up media is floppies. This 2049x1536 dimension gives me the idea that maybe I should use that as a base image size.



krbtv posted Wed, 12 July 2000 at 1:32 PM

Will a "tiff" file give better quality than a "jpeg" file?


Spike posted Wed, 12 July 2000 at 2:23 PM

Yes it will because it is not compressed. But be warned the file size can get big fast. 2048 x 1536 pixel tiff = around 16 meg

You can't call it work if you love it... Zen Tambour

 


Spike posted Wed, 12 July 2000 at 2:42 PM

Oh one more thing. things to keep in mind when rendering your image. The most common standard for printouts is 300 dpi So if you wanted a 8X10 print at 300 dpi your rendered image would have to be 2400 X 3000. The math: 8" X 300dpi = 2400 dpi because there will be 300 dots per inch printed. 10" X 300dpi = 3000 dpi. I have however found that with my new setup as listed above I can make some killer prints at 200 dpi. and I still can't belive my eyes. I never thought I would ever say that digital cameras rock and are just as good if not better then standard 35mm camers. (this is not to say that they will be replaced because as of yet most don't offer the same lens changing options unless you spend lots and lots). but they do offer some cool things like ya don't have to spend 13 bucks having prints made only to find out only one looks good and you just spent 13 bucks on one 3 X 5 print. And they are fast. I went from studio to 8 X 10 print in 10 min.

You can't call it work if you love it... Zen Tambour

 


lmacken posted Wed, 12 July 2000 at 9:34 PM

I got a digital still camera early on (think tv resolution); but what I found was you take cheap pictures so you take more pictures and pretty soon you take better pictures. But you want rechargable batteries.