The program can launch your favourite photo databases. There is a reciprocity table already included, and up to 5 new databases can be defined. Choose "Customise" to enter the filenames of the databases that you have copied into the folder where PhotoPal is installed, e.g. c:\system\apps\photopal\
This small tool will sound a beep and/or blink the dictaphone LED at every second so that you can time long (=bulb) exposures more accurately. Hit enter, and the elapsed seconds will be displayed along with the beep and/or LED. You can select low or high pitched tone and LED on/off in the Preferences.
mber of machines.
The program is Freeware. You are encouraged to pass the distribution .ZIP file to your friends and colleague.
PhotoPal is Copyright
2000 Peter Csutora. All rights reserved.
If you like PhotoPal, why not look at my other programs as well? These are:
Encrypt-it!: This award-winning program is the highest security and fastest file encryption utility ever featured on a Psion computer. Marketed through PocketIQ (www.pocketIQ.com). Shareware.
FlashBack: This is a compact flash-based backup utility featuring built-in encryption, fully customisable profiles, dynamic file management, reminder options, and many more. Marketed through PocketIQ (www.pocketIQ.com). Shareware.
Statistics: A general statistical package. Marketed through PocketIQ. Shareware.
BatCheck: A simple yet very useful battery monitoring program. A must with rechargeable batteries. Freeware.
Moon: A small program that displays the current phase of the moon as well as next coming events. Freeware.
More programs coming soon to a Psion near you...
* Depth of field calculations: hyperfocal distance, near and far distance, focus and aperture calculators. Custom film sizes can be configured, great option to input CCD size of digital cameras.
* General calculations: lens choice, film speed, angle of view, close-up ratio, bellows factor, EV and EV difference calculators.
* Scanning calculations: file size, resolution on screen, resolution for printing calculators.
* Launch of databases, one database included (Reciprocity failure or films), up to 5 more databases configurable.
* Second ticker, useful for better timing of long (bulb) exposures. Audible signal and/or LED blinking, display of elapsed seconds.
Flash distance: enter the guide number of your flash at the selected zoom setting (guide numbers can be stored in the program for reference), enter the film speed and the aperture. The maximum and minimum distances will be calculated.
Flash aperture: enter the guide number of your flash, the object distance, and the film speed. The recommended aperture will be displayed.
Flash bounce: enter the object distance and the height of the ceiling or distance of wall you use for bouncing. The flash total distance (to the ceiling and then to the object) and the angle of the flash head will be calculated.
resolution for printing calculators.
* Launch of databases, one database included (Reciprocity failure or films), up to 5 more databases configurable.
* Second ticker, useful for better timing of long (bulb) exposures. Audible signal and/or LED blinking, display of elapsed seconds.
Hyperfocal distance: enter the focal length of the lens (mm), the aperture, and the film format (35mm, 6x4.5, 6x6, 6x7, 6x9, 4x5", 5x7", 8x10", movie 16mm, movie 35mm), and the hyperfocal distance will be calculated. The result will be presented in a practical format, e.g. "You need to focus at 5.2 meters (this is the hyperfocal distance) to get depth of field from 2.6 meters to infinity.".
Near and far distance: enter the focal length of the lens, the aperture, the object distance (m/ft) and the film format, and the depth of field will be calculated. The near and far distances will also be displayed, basically everything will be in focus between these two distances if the above settings are selected.
Focus and aperture calculator: for many photographers this is the most useful calculation. You enter the focal length of the lens and the near and far distances (depth of field) you want to obtain, and the program will calculate what distance and aperture you have to set on the lens. Of course the aperture result often does not indicate a full aperture setting, in this case select the closest smaller aperture value on the lens (e.g. if the result is 1/3.1 then select 1/2.8 on the lens). You can also play with the near and far distance values to get a full aperture value.
File size: enter the width and height of the image on the screen (inch/cm), the resolution (DPI) and the color mode (monotone, duotone, 16 colors, 256 colors, 16 million colors, high color). The file sizes will be calculated for both RGB and CMYK images.
Resolution on screen: enter the original width before scanning and the final width on the screen, also select the screen resolution (lines per inch), and the resolution of the image will be calculated.
Resolution for printing: enter the width of the image in pixels and in inches/cm, and the resolution will be calculated.
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Lens choice: enter the object distance, the object size, and the desired size on film (mm/in). The magnification ratio and the focal length of the lens to be used will be calculated.
Angle of view: enter the focal length of the lens used and the film size, and the and of view will be calculated. Teleobjectives always have a smaller ange of view than normal or wide anggle lenses, and thus can separate the subject from the background better.
Magnification ratio: enter the focal length of the lens, the length of the tube or extension of bellows (mm), and the object size. The magnification ratio and the final object size on the film will be calculated.
d. Bellows factor: the extension by bellows or extension rings increases magnification but decreases light. If your camera has a TTL exposure meter it will compensate for this light loss. However, if you have a camera without a TTL meter use this calculator to determine the right exposure. Enter the lens focal length and the extension length, then enter the shutter speed you have measure using a hand-held light meter. The bellows factor and the correct shutter speed will be calculated. Note, if the bellows size is less than the lens focal length, you need no compensation.
Film speed: this convert between ISO and DIN values. The highest selectable DIN value is 39. The ISO > DIN conversion gives exact numbers that match the numbers shown on film boxes, however, the DIN > ISO values are sometimes a bit off due to the inverse logarithmic calculation (e.g. 27 DIN = 398 ISO, this practically means 400 ISO).
EV calculator: enter the aperture and shutter speed values as measured by the your camera or hand-held light meter, and the exposure value (EV) will be calculated.
EV difference: select a pair of ISO, aperture and shutter speed values. The difference in light values (EV) will be calculated.
Features
Thanks to...^
rgy Fleischman for advice and suggestions.
* You for trying PhotoPal :-)
Peter Csutora
Arial
Arial
Disclaimer & Licence agreement
esolution will be calculated.
Units of measurement: select the most often used unit, and this will be displayed as default in the various calculators.
Second ticker beep: select low pitched or high pitched beep and LED on/off. This setting will be used for the Second ticker.
Default film format, focal length and aperture: select the most often used settings, and these will be displayed as default in the various calculators.
Circle of confusion: this setting affects the depth of field calculations. Use the setting that you prefer:
a. Optimal: a value that is mentioned in most books is used.
b. Calculated: a value as calculated by the Zeiss formula is used.
Values:
Film size Optimal Calculated
35 mm 0.03 0.025
6x45 0.05 0.043
6x6 0.06 0.05
6x7 0.065 0.053
6x9 0.075 0.063
4x5 in 0.15 0.094
5x7 in 0.2 0.126
8x10 in 0.3 0.188
movie 16 0.013 0.013
movie 35 0.036 0.036
Custom film size: You can configure 2 custom film sizes. Great for professional digital camera users. Just enter the dimensions of the CCD chip, and give a name to this custom setting. Now you can calculate hyperfocal distance, depth of field, etc. for this custom film size.
Guide number: all of the flash calculators use a value called Guide number in their formulas. You can find this number at various zoom settings in the users guide of your flash. If you enter these numbers at the Preferences you can get a hint at the flash calculation dialogs by clicking on the "Guide number" button. The initial values are for the Nikon SB-28 flash, this is the flash I use myself. :-)
Tables: here you can configure the custom databases, the same way as in the Tables menu > Configure option.
version 2.2:
* You can configure 2 custom film sizes. Great for professional digital camera users. Just enter the dimensions of the CCD chip, and you can calculate hyperfocal distance, depth of field, etc.
* The depth of field calculators can now use two circle of confusion values: one calculated from the Zeiss formula, and one called 'optimal' that most books tend to use. Choose the one that best fits your needs.
* New functions: angle of view calculator, bellows factor calculator, EV calculator.
* Support to run from drive E: has been added (netBook, Series 7).
* Bug fixes and optimisations in the EV difference and various Flash calculators.
* Redesigned preferences dialog, with several more options and defaults selectable.
Contacting the author
If you have any problems or suggestions, please do not hesitate to contact me at:
peter@pocketIQ.com
You can always find the newest version of PhotoPal and my other programs at:
http://members.tripod.com/~csutora/
http://www.pocketIQ.com
Other programs
What's new?
1. Depth of field calculations#
2. Flash calculations"
3. General calculations
4. Scanning calculations
5. Tables
6. Second ticker
7. Future calculators and toolsv
If you need any other features just let me know, I will be happy to include them in a future version of the program.
8. Preferences
PhotoPal was extensively tested and appears to have no bugs. However, the author cannot and does not accept any liability for loss caused by error, defect or failure of the software including any loss of any kind. No guarantee is either offered or implied by the author. Use of this software is entirely at your own risk.
PhotoPal, including all related program files may not be altered in any way. Reverse Translation is expressly forbidden without written permission of the author.
You may install the software on an unlimited number of machines.
The program is Freeware. You are encouraged to pass the distribution .ZIP file to your friends and colleague.
(.txt)