Bonk, Bonk, Bonk. Is This Thing Turned On?

How many items do you carry in your photographic kit that don't need electricity? Not many, I suspect. Even the lens cleaning cloths these days seem to have a battery door somewhere...

One that you can rely upon without power is the grey card. Also known as the gray card in rural Missississippi. It is the photographic studio equivalent of a Powdermilk Biscuit - always there in the cupboard and good for any number of things.

The schools all teach about grey/gray* cards when they talk photography. In some cases I suspect their lecture material was last revised about the time that Ansel Adams invented the 2-zone system...he expanded his practise later...and they make great theatre out of using the things to assess exposure. Some modern students can be brought to understand this and come cannot, but it is still good to see old rituals being enacted.

The standard 18% reflectance grey/gray card was used first with hand-held meters - indeed it may have been seen with extinction meters in the Jurassic period. It allowed the user to have a standard surface colour and contrast to measure to ensure that exposure fell somewhere in the middle of the sensitive range of the plates or films in use at the time. It worked, and let the user make one good guess regardless of whether the scene to be photographed was in contrasty sunlight or flat dark shade. The photographer could then override that advice by merely setting the aperture or shutter speed differently.

This was in the days before camera companies packed the central processing chip with 20,000 images that could be referenced in an instant to give a perfect exposure. You got one bite at the cherry and, often as not, your teeth hit the stone inside. This was in days when you paid for the film, developing, and printing, and did it with your own money. You wanted to get the exposure right the first time.

Your scene might have been all over the place as far as lights and darks went and measuring any small portion could have thrown out the whole shebang. The 18% reflectance was what your meter was set for so it was what you measured. Some of us measured them at home before we went out and cello-taped the controls down on the cameras but that didn't work all that well...

Well... you can do the same thing now with the cards. Use them as exposure guides or use them as white balance guides. You can shoot a custom WB into one and save yourself a lifetime of slider hockey on the computer when you get home. You can take a clear picture of it, compare it to the computer screen and later to the print and see exactly whether you've got the balance right. Like the multicoloured X-Rite calibration colour checker cards, 30 seconds spent shooting this simple little plastic panel will save you 30 minutes in the computer room.

That's good value for money and time. Grey, gray, or grau - they make sense.

* Not to be confused with a noted Melbourne television personality who did crow imitations.

A Day With My Scaley Mates

Did goe to the Reptile Expo yesterdaye and was greatley entertained.

It was held at Bogan Central - otherwise known as the Cannington Agricultural Hall. The reason for the nickname is instantly evident, but so many fun things happen at this venue - the toy car expo next weekend and the collector's fairs, etc. - that the occasional flannel shirt and uggs is a small price to pay for the pleasures. Even if you are the one wearing them...

So - yesterday was reptiles, and it was a typical Perth experience - and eye-opener as to just how many people are interested in a subject, how sophisticated their knowledge is, and how much trade and commerce there is out there to support it. It is the same with quilt sewing, hot rods, iron ore mining, and Lithuanian ferret racing - give them a day out and there are a million people there.

We took a stand of goodies that might interest a reptilian - DGK grey cards, Adobe image programs, Datacolor Spyder - and a some magic Nikon cameras and a coupla Cullmann products.

Well, the 10:00 lecture from me on wildlife photography was attended by me. And after ten minutes even I left. Everyone was having too much fun with the rest of the snakes to want to listen. In the event, they did come and ask sensible questions at the stand.

They ran a photographic competition that was won by three suitable shooters - first and second prize were a father and son team and son beat father. I should advise him to guard his prize - a Cullmann 525 tripod and big carrying bag - well as there was a predatory gleam in Dad's eye...reptiles do that to you.

One thing was impressive - everyone from the pure enthusiast all the way up to the two wandering officers from the Conservation Department had the interests of the animals at heart - none of the reptiles were ill-housed or ill-treated. Some of the pythons seemed to be exercising a wicked sense of humour when they were allowed to climb over pretty girls. The frogs looked nonplussed and none of them elected to turn back into princesses no matter who kissed them. The bobtail goanna in the terrarium next to our table was prosperous - his keeper obviously knew exactly the right diet for him.

The day was a success - next Sunday is toy cars and I am looking out my tracky daks and Jackie Howe shirt in preparation. I wonder if I have time to grow a mullet before then...

Slither Along To Cannington

If you want to see some venomous reptiles with aggressive attitudes but are tired of watching the current affairs segments on the television news...may I suggest that you visit the Cannington Exhibition Center on Albany Highway this Sunday. They are running a fabulous reptile exhibition all day.

Of course it is not all snakes - there will be lizards and frogs and newspaper journalists and everything. With a bit of luck you might find something cute and cuddly.

It won't be me, I hasten to add. I'm to give a little talk on photographing reptiles. Which will be an exercise in pure imagination ...errr...I mean careful scientific conjecture. I don't photograph reptiles. They don't photograph me. The closest we come is a brief nod across the room at a cocktail party.

I'm going to recommend two approaches - the careful/scientific and the joyous/artistic. In the one case I will be showing a Nikon DSLR equipped with a long macro lens and a flash on the end of a coiled cord. I will also advocate the use of a standardised colour card and image-correcting software so that the budding Darwin will be able to present the images with some accuracy.

The artistic will be with the new Nikon P7700 Coolpix, and an armful of construction paper. The former will render most close-up scenes beautifully and the latter will spice up the backdrops. The animals that need to be photographed from a distance - venomous ones - can also be captured pretty well with the camera and as it features the standard TTL hot shoe assembly the coiled cord and the SB 700 can also be brought into play.

Okay, folks, I'm not telling you anything you don't know, and I suspect I won't be telling the herpetologists anything THEY don't know, but at least I can help them to organise their outfits.

I wonder if they will applaud me or just hissssssss?

PS: The top image is Chelsea Bunz as a salamander...