Go Back   The TrekEarth Forums >


Thread Tools
Old 05-26-2004, 11:43 AM
Edwin's Avatar
Edwin Edwin is offline
TE Junior Member
Thread Starter
Join Date: May 2003
Posts: 157
Default To Yitzhak: postprocessing work and exposuring of neg. film

Hi Yitzhak,

Thanks for your comment! Let me "clarify" that I didn't use Paintshop's Clarify Tool here, but instead experimented with the PS Unsharp Mask settings... I usually sharpen a picture after downsizing by using the following settings:
Amount 50-70%
Radius 0,7-0,9pixels

Increasing both these parameters often leads to an oversharpened picture with too obvious traces of sharpening.
This picture I sharpened using a settings somewhere in the following range:
Amount 100-150%
Radious 0,1-0,3pixels

The result is a much more fine dotted kind of sharpening and also increased the effect of having used a faster - more grainy - negative film.

And since I am still using negative film I also experimented with exposuring and what kind of effect it has on an image when increasing the shutter time (and ofcourse at the same time adjusting the f/stop to get the right exposure)...

For instance, if DOF doesn't play an important role it is actually rather interesting to try the following:
-a subject needs the following exposuring: 1/180s and f/5.6
-count the stops down to hand-held exposuring and add them to the aperture

For instance:
1/180s and f/5.6 (1)
1/125s and f/6.7
1/100s and f/8.0
1/60 and f/11.0 (2)

In this example the same subject can be shot with 1/180s and f/5.6 (1), and with 1/60 and f/11.0 (2).
With (2) the negative film is exposed 3 times longer than with (1) and due to the smaller lens opening (meaning higher f/stop value) the exposuring will still be correct.

The result is often stunning, a more contrast rich picture.
You should even try it with a tripod, this is how for instance one can get a really beautiful blue sky in nightshots.

Two examples are:
Cathedral Santa Creu
Fontana di Nettuno

Both sky parts were absolutely black for the eye, but just that extra long exposuring makes the difference ;-)

Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 11:01 AM.

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.