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Jun 12, 2020 21:16:08   #
Oh... really simple... I should have thought. Sometimes we just get stuck in something that seems complicated that we keep trying to thinkg out of the box when solution is there, almost biting you.
Thanks for opening my eyes (and brain....)

Regarding printing I saw some saying that you can get good quality prints from 200 dpi images, is it true? I would allow bigger prints from the same resolution.

Have you all a great weekend

Speed
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Jun 12, 2020 18:23:10   #
cejonesjr wrote:
My Canon 6D takes raw photos that measure 5472 pixels by 3648.
At 300 dpi, I can print photos up to 182 inches by 121 inches.
I printed a canvas print for a family photo that measured 3 feet wide.
I used Photoshop to crop and format my print to fit a 3 foot wide canvas.
It's a lot easier to make the digital file a little larger than is needed and scale it down than trying to scale up a lower resolution photo.


That is great. How do you calculate it? My Z6 is a 6048 x 4024. What would be the maximum size @ 300 dpi that I would be able to enlarge?

Thank you

Speed
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Jun 12, 2020 03:52:29   #
Ok, thanks. I do work with photoshop and familiar with some of the enhancing programs. They produce good results but they are somewhat limited in their results and I was just curious how it is possible to get to those super large magnifications without showing image artifacts. Anyway, not that important, just plain old curiosity.
Thanks for taking the time to reply to my question.
Cheers

Speed
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Jun 12, 2020 00:33:32   #
f8lee wrote:
If you are starting with a digital image, then I believe the only digital-to-analog process out there is where that digital file can be used to generate a film slide - this is done using a high resolution laser that is used to expose the film, which is then developed and mounted in slide mounts. Here's a place that offers that service:

https://www.colorslide.com/

DLP (Digital Light Processing) was never an analog process - it is essentially a fancy mirror system where, rather than photosites, thousands of tiny mirrors are actuated on the surface with colored light being reflected from them to project an image (either as a rear-screen projection television like Mitsubishi used to make or in some movie theater systems). They are good, but not inherently analog, nor could it be compared to the optical enlargement of a negative or slide.
If you are starting with a digital image, then I b... (show quote)


Thanks for the info. I thought DLP would use a transparent screen illuminated in the back and projected through the lens. Is there any image enhancing or interpolation made when enlarging a digital picture to large sizes like 40"x 30" and larger for printing?

Cheers

Speed
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Jun 11, 2020 21:20:07   #
Yes, i understand it can be done digitally by a computer but if we remember the DLP televisions that were not anything different from an "old enlarger" (we can think about the same of the projectors we use) it may be something similar. Doing this type of conversion may introduce noise and loss but considering that the DLP unit would be small it's use would allow a analog enlargement with better results than a digital one since optical enlargement does not criate pixelation but only loss of brightness that could be corrected by adjusting the exposition. All in theory of course, hence my curiosity...
Thanks
Speed
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Jun 11, 2020 16:23:32   #
Hi all, sorry I've been looking for an answer on the net and couldn't find the answer as of yet... Are digital pictures enlarged digitally (similar to a digital zoom) or optically (similar to film enlarger)? I would like to understand how they keep the printing quality in very large size pictures.

Thanks

Speed
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Jun 5, 2020 09:59:44   #
ga6742 wrote:
It's mid 2020. Are our expensive dslr's going to become worthless? I just saw a full set of graduation photos that were excellent all taken with a phone. These phones can do 95% (my guess) of dslr functions. That along with post processing that does a complete photo makeover seems to be shrinking the dslr into oblivion. Is this the passing of an era?


Well, I recently (October 2019) went to Italy, South Tyrol, and rented a Porsche for a week. Expensive, but one of my bucket list desires. It was a blast driving "Him" (I refuse to call "it") through the mountains and passes. For sure I could have done it by bus, bike, economy car or even by foot... I would have been at the same places but hey, life is a journey not a destination... you must love how you are getting there. My Note10 is wonderful, it take good pictures specially when you have talent (unhappily not my case :-( ) but I still prefer the feeling and the empowerment of a good body and lens. Topping it try to match a full frame sensor noise with the small one in the phone and we will easily have a case.

Anyway, phones are very good nowadays and it is great to have "a camera" all the time with us. I use my DSLRs less nowadays but I feel more "pleasure" when I do anticipating what more I can get from them than with just the phone. If I can and when I can, I'll go in a Porsche !!!

Cheers
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