Re: [APML] 400F (was: Alternative Anti-Vignetting PhotoshopTechnique)

[Sean Walker <vze2c3z8@mail.verizon.net>]

Herm, pushing E-200 3x just makes the slide thinner, and you lose alot of
dynamic range that way, so it's not really a good comparison.

Sean Walker

> From: Herm <hermperez@worldnet.att.net>
> Reply-To: astro-photo@seds.org
> Date: Thu, 10 Jan 2002 14:42:19 -0500
> To: astro-photo@seds.org
> Subject: Re: [APML] 400F (was: Alternative Anti-Vignetting Photoshop
> Technique)
> 
> Matt. that is an excellent shot taken with a c8 and a GM8.. but I attempted to
> shoot M31 many times with E200 and never got a good image.. yet the first time
> I
> try hypered pj400 I end up with a great shot without lots of computer
> processing. I have a comparison on my web site between these two films on M33,
> please check it out: http://home.att.net/~hermperez/e200_vs_pj400.htm
> 
> Note how E200 recorded more in blue and red than hyp PJ400, but note how hyp
> PJ400 still recorded more white light.. so overall the hyp PJ400 did a better
> job on this galaxy. I still prefer E200 for nebula shots.
> 
> Matt BenDaniel <matt@starmatt.com>  wrote:
> 
>> Herm,
>> 
>> Why?  E200 does a great job recording H-II regions.  See:
>> http://people.ne.mediaone.net/mbendaniel/gallery/astro/m51.html
>> 
>> It is true that a bright galactic core will saturate on slide film, so
>> masking in an additional short shot would be the answer.
>> 
>> Matt
>> 
>> Herm wrote:
>>> 
>>> Matt, I dont like using E200 for galaxy shots, it just does not work well..
>>> on
>>> the other hand its excellent for red stuff..
> 
> 
> Herm
> Astropics http://home.att.net/~hermperez
> 
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