Forum
Join our online community, and be informed and entertained
Your questions answered question online amateurphotographer.co.uk
A profile not recognised
Swanseadaveasks I downloaded a generic profile for some PermaJet Inkjet paper, but Windows doesn't recognise it and will not open it. Does anyone have any ideas?
Norman asks Why are you trying to open it? Just put it in C:\Windows\ System32\spool\drivers\color (assuming standard installation of Vista/XP). Then tell your photo application not to let Windows manage colour and select the profile you downloaded. If you let Windows/printer manage colour, it will select the printer's profile based on the paper choice you make.
John_g asks PermaJet will make a personal profile for your printer if you're using one of its range of papers. I have an old HP Photosmart 7960 printer and, in less than 48 hours, they had processed the test printouts I posted to them and emailed me a custom profile.
We stand corrected
RJ Fisk writes The answer given to the FAQ on pages 46-47 of AP 8 November is incorrect. The size of the Four Thirds sensor is 18x13.5mm (not 8x13.5mm as stated), which is half the size of the 35mm frame, not half the size of an APS-C as you suggest. Therefore, there are the same number of photosites per unit area on an Olympus 10MP sensor as there are on a Canon 21 MP full-frame sensor and about the same density as a Nikon 15MP sensor.
Barney Britton replies The dimensions of a Four Thirds sensor are indeed 18x3.5mm, and we apologise for any confusion caused by this typo. However, the relationship of Four Thirds to the sizes of 35mm and APS-C frames was expressed correctly, and it is true that given an equal number of photosites on all three formats, the Four Thirds sensor is much more densely populated than a full-frame or APS-C equivalent, leading to the potential problems described in the original copy.
Chemical question
Alan Johnson asks I have been trying out Geoffrey Crawley's new FX-55 film developer, as mentioned in AP 13 September, and my first tests suggest that it gives finer grain than FX-37 with slightly less film speed increase. It gives higher acutance than Xtol 1+3.1 was wondering, though, what the sulphite does. Is it a preservative, a speed increaser, an acutance enhancer or tonality improver?
Geoffrey Crawley replies Good to hear you are obtaining fine results from FX-55. The sodium sulphite plays the same role as in any developer, acting as a preservative and giving partial regeneration of the agents during processing. Its slight solvent action on the emulsion's silver halides helps start development by giving access to the internal latent image centres. In excess - more than about 60g per working litre - it begins to erode the surface latent image, reducing film speed, though the solvent action refines image grain.
Next week
On sale Tuesday 16 December
DON'T MISS OUR BUMPER
high as 200 volts. You can measure a flashgun's trigger voltage using a voltmeter. With the flash turned on, press one of the voltmeter's electrodes against the contact adjacent to the locking ring and touch the other electrode against the central contact on the base of the flashgun. The gun should fire, and the trigger voltage will be recorded on the voltmeter. If it's less than 6V, the flashgun should be safe to use. Alternatively, take a look at the Wein
SafeSync. The hotshoe-to-hotshoe version fits between the flash and the camera, and converts your flash's trigger voltage to a safe value. The SafeSync is available from The Flash Centre, and costs £45.83, which is cheaper than a new flashgun, and a lot cheaper than a new camera. You can get in touch with The Plash Centre on 0207 837 5649 or visit the website at www.theflashcentre.com. Barney Britton
Joe Cornish
Want to produce great winter landscapes? Follow Joe Cornish's wZ tips on photographing Sf^r snow this winter
Shoot
If you have an old DSLR that you don't®»/-not have it converted to shoot intadflv^^ look at one company's conversion process - _
% II Do it yourself
^Vj. - Photography doesn't ^^ 1 ^ have to be all about expensive equipment
The magnificent seven
AP gets a guided tour of the Lowry Gallery's exhibition celebrating seven Manchester-based _ Guardian photographers
Making Contax r*-»
Ivor Matanle traces the history of ^^Kgi the Contax brand during the 1930s in our Icons of Photography series ♦ )4___
The Visible Dust Mega Deal is well worth shouting about!...
There's nothing worse than dust on your sensor causing hours of retouching on your computer, or at worst, losing the shot altogether. Visible Dust is a scientifically advanced system of award-winning products that delivers an immaculate sensor quickly and safely in just three simple steps. Invest in an Arctic Butterfly SL724 Brite + Sensor Loupe 7x bundle (SRP £129.95) between September and Decomber, and claim tho products for removing stubborn or oily marks completely free, worth £55! The four free product» supplied: • Magic Cleaner Cloth • Lens Clean • VDust Plus Formula • One pack of 12 swabs
Step 1 - Check with the new Sensor Loupe™
• Using high quality K9 optics, magnify your sensor 7x to check lor dust
• Avoids unnecessary cleaning and saves lime and consullables
Step 1 - Check with the new Sensor Loupe™
• Using high quality K9 optics, magnify your sensor 7x to check lor dust
• Avoids unnecessary cleaning and saves lime and consullables rc-ii Fora»»
Willi Ihe Fatuous Arctic Bulterfly
• Super-Charged Fibres lift dust away Irom your sensor - and out ol your camera.
• Tlie brush is spun outside ol your camera to recharge libres
• Ftemoves harmful debris prior to wel cleaning - unique lo Visible Dusl
• A portable simple, last solution for 90% of dust problems
• Now wilh an UllraBnle LED to aid dust detection
Ftemoves "welded" dirt, .streaks and stains
Sensor size specific - minimal passes Advanced scientific fabrics -like no other swab on the market Range of cleaning solutions available Safe on your sensor, and sale for travel
Simple, safe and effective cleaning
At participating stockists diiing Sepl-Oec 08 whilst promotional stocks last.
Ofler end» 31/« while promotional stocks last visibleuust
Photographer
'the 6esl sensor cleaning lofcttow IV» tritl no <to>»
Bogen Imaging T:01293 583300 F:01293 583301
Take advantage of this offer from September 1M to December 31 2008
Bogen Imaging T: 01293 583300 F: 01293 583301 w[email protected]
Protective Carrying Technology
Backpack morph from sling to backpack and back again providing ultimate freedom of use. These unique bags hold and protect your camera equipment as well as everyday accessories while allowing you quick draw for shooting. Three varying sizes take equipment ranging from a small kit to a large kit for extended shooting
Panasonic Lumix DHC-G1
Entry-level hybrid
Continue reading here: Photoscience Consultant Addresses The Way Lenses Turn Light Into Images
Was this article helpful?
