Which film has most DR & which classic Pentax cameras have 1/2000 or faster shutter?

Gooshin · 04-07-2009, 01:31 PM

Originally posted by brkl

Well I've never seen a convincing example.

define convincing, i'm doing a debate in another thread..

here is a 2000X1300 image, downsampled from the original 6000X4000 tiff, when i get home if you want i can send you the original..

but i think this is pretty good, for semi hand held @ 1/6th

http://fork.zenfolio.com/img/v7/p741806843.jpg

Jimfear · 04-07-2009, 02:31 PM

Example of that a negative scanned at a little over 13MP is good enough. The image is sharpened a little bit.

I can scan it again at a higher resolution if anyone is interested?

Original image:

100% crop

Gooshin · 04-07-2009, 02:45 PM

final resolution has little to do with a scanners ability to record information within the frame, (real dpi)

this is where scanner testing and scanner reviews come in.

also, for best results images should be scanned at native dpi, whatever that is.

ddhytz · 04-07-2009, 07:12 PM

How to find native dpi for a particular scanner?

Gooshin · 04-07-2009, 08:01 PM

Originally posted by ddhytz

How to find native dpi for a particular scanner?

usually its the advertised number..

this is a good site

Test reports film scanner: Reviews, experiences, comparison, overview: Nikon, reflecta, Plustek, Canon, Microtek, Quato, Umax

also, check out this thread

https://www.pentaxforums.com/forums/post-processing-printing-software/55500-f...ns-anyone.html

jgredline · 04-07-2009, 09:27 PM

Great thread guys. I have an HP Scanner and many folks would agree that it is a great scanner but the HP software is garbage. I would have to agree. Since hooking it up with Vue Scan, I get really good results. While researching this, it seems that it comes down to Silver fast or vue scan...

As for the DR range of film VS digital, I have the Fuji S100FS that has the built in fuji modes for different films. It has the same basic processor as the S5pro.. While it does a good job at film simulation, it is NOT film.

dlacouture · 04-07-2009, 11:48 PM

Gooshin : Enfuse works great, sure, but not for portraits... Can't imagine how I could shoot three pics in a row without my kid moving a full mile between each... And yeah, I'm talking about a 3fps burst (kids are that fast, at least mine!).

Maybe with the 20fps high speed burst, but I'd then be limited to a 1.5MP pic (just enough for a 4x6).

Hey, that just gave me an idea... I'll give it a try tonight, a showdown between:
- a regular 3200 iso shot
- a 20fps 3200 iso burst, stacked with enfuse (EDIT : I mean, averaged with enfuse)
- a 20fps 800 iso burst, stacked with enfuse (EDIT : I mean, each pic is shoot with a reduced exposure, then all the partial exposure are added)

All this with "moving targets"... The 20fps burst would only allow for 4x6 prints, but 3200 iso is not that much better anyway...

Last edited by dlacouture; 04-08-2009 at 08:11 AM.

Gooshin · 04-08-2009, 06:36 AM

keep in mind that you only need a medium capable of recording high dynamic range in a scene that has high dynamic range...

shooting a low DR scene with a high DR film is almost pointless.

===

another point to mention is that getting a flash gun with a swivel head can help reduce the need for the sensor to have high DR by simply filling in the light!

dlacouture · 04-08-2009, 08:16 AM

Well, I shoot exclusively my kids in all kind of situations, so I'm not into scenery or architecture, but even there a high-DR medium is paramount...

I'd even go as far as saying that it's nearly the only kind of picture where a high DR medium is necessary, as scenery or architecture can be handled by bracketing, whereas portraits are restricted to one shot only...

04-07-2009, 02:31 PM	#32
Jimfear Veteran Member Join Date: Apr 2007 Location: Uppsala, Sweden Photos: Gallery Posts: 576	Example of that a negative scanned at a little over 13MP is good enough. The image is sharpened a little bit. I can scan it again at a higher resolution if anyone is interested? Original image: 100% crop 100% crop

04-07-2009, 07:12 PM	#34
ddhytz Veteran Member Join Date: Sep 2007 Location: Melbourne Posts: 602	native dpi How to find native dpi for a particular scanner?

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04-07-2009, 01:31 PM	#31
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	Originally posted by brkl Well I've never seen a convincing example. define convincing, i'm doing a debate in another thread.. here is a 2000X1300 image, downsampled from the original 6000X4000 tiff, when i get home if you want i can send you the original.. but i think this is pretty good, for semi hand held @ 1/6th http://fork.zenfolio.com/img/v7/p741806843.jpg

04-07-2009, 02:45 PM	#33
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	final resolution has little to do with a scanners ability to record information within the frame, (real dpi) this is where scanner testing and scanner reviews come in. also, for best results images should be scanned at native dpi, whatever that is.

04-07-2009, 08:01 PM	#35
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	Originally posted by ddhytz How to find native dpi for a particular scanner? usually its the advertised number.. this is a good site Test reports film scanner: Reviews, experiences, comparison, overview: Nikon, reflecta, Plustek, Canon, Microtek, Quato, Umax also, check out this thread https://www.pentaxforums.com/forums/post-processing-printing-software/55500-f...ns-anyone.html

04-07-2009, 09:27 PM	#36
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	Great thread guys. I have an HP Scanner and many folks would agree that it is a great scanner but the HP software is garbage. I would have to agree. Since hooking it up with Vue Scan, I get really good results. While researching this, it seems that it comes down to Silver fast or vue scan... As for the DR range of film VS digital, I have the Fuji S100FS that has the built in fuji modes for different films. It has the same basic processor as the S5pro.. While it does a good job at film simulation, it is NOT film.

04-07-2009, 11:48 PM	#37
dlacouture Veteran Member Join Date: Jul 2008 Location: Var, South of France Photos: Albums Posts: 1,074	Gooshin : Enfuse works great, sure, but not for portraits... Can't imagine how I could shoot three pics in a row without my kid moving a full mile between each... And yeah, I'm talking about a 3fps burst (kids are that fast, at least mine!). Maybe with the 20fps high speed burst, but I'd then be limited to a 1.5MP pic (just enough for a 4x6). Hey, that just gave me an idea... I'll give it a try tonight, a showdown between: - a regular 3200 iso shot - a 20fps 3200 iso burst, stacked with enfuse (EDIT : I mean, averaged with enfuse) - a 20fps 800 iso burst, stacked with enfuse (EDIT : I mean, each pic is shoot with a reduced exposure, then all the partial exposure are added) All this with "moving targets"... The 20fps burst would only allow for 4x6 prints, but 3200 iso is not that much better anyway... Last edited by dlacouture; 04-08-2009 at 08:11 AM.

04-08-2009, 06:36 AM	#38
Gooshin Veteran Member Join Date: Sep 2007 Location: Toronto, the one in Canada. Posts: 5,610	keep in mind that you only need a medium capable of recording high dynamic range in a scene that has high dynamic range... shooting a low DR scene with a high DR film is almost pointless. === another point to mention is that getting a flash gun with a swivel head can help reduce the need for the sensor to have high DR by simply filling in the light!

04-08-2009, 08:16 AM	#39
dlacouture Veteran Member Join Date: Jul 2008 Location: Var, South of France Photos: Albums Posts: 1,074	Well, I shoot exclusively my kids in all kind of situations, so I'm not into scenery or architecture, but even there a high-DR medium is paramount... I'd even go as far as saying that it's nearly the only kind of picture where a high DR medium is necessary, as scenery or architecture can be handled by bracketing, whereas portraits are restricted to one shot only...