15 49.0138 8.38624 1 1 5000 1 https://www.lukeobrien.com.au 300 true

Tiger Orchid – Diuris sulphurea

The Tiger Orchid is putting on a great display right now. I have visited Waverley Flora Park a few times over the past couple of weeks and there are quite a lot. Funnily enough I’m not really finding any other orchids, I might try some other locations in the weeks ahead…

tiger orchid waverley flora reserve

Tiger orchid at Waverley Flora Park. Shot in TAv mode (ie ISO variable). F11, 1/250 seconds, ISO 1600

 

tiger orchid waverley flora reserve

A very still day – F8 and 1/13 seconds. ISO 125.

 

Tiger orchid at Waverley Flora Park

A tiger in the drizzle at Waverley Flora Park in Mornington

 

Tiger orchid at Waverley Flora Park

Tigers in the rain 🙂

 

Tiger orchid at Waverley Flora Park

The weather was perfect. Small raindrops and no wind at all. F8, 1/200 seconds. ISO640.

 

Tiger orchid at Waverley Flora Park

Backlit against the grey sky. F8, 1/200 seconds, ISO320.

 

Tiger orchid at Waverley Flora Park

F8, 1/400 seconds, ISO1600.

 

Tiger orchid at Waverley Flora Park

Closer view.

 

Tiger orchid at Waverley Flora Park

There are currently many stems with multiple flowers.

 

Tiger orchid at Waverley Flora Park

This was a nice capture against a fairly dark and non-distracting background. F6.3, 1/320 seconds, ISO320.

 

Tiger orchid at Waverley Flora Park

Possibly my favourite of the day – a little arty with the blurred background. F6.3, 1/640 seconds, ISO320.

 

I shot most – if not all – of these in TAv mode, which is similar to shooting in M mode with auto ISO but differs in one important regard. Because it is a “priority” mode – in this case, both aperture and shutter speed priority – you can also use exposure compensation to under or over expose as required, and it is the ISO which becomes the variable.

So if your composition is in lowish light the ISO will go higher, if you are in a well lit spot it will be lower, and you can also utilise exposure compensation meaning you can control the highlights/shadows just as you can in Av or Tv mode, which is something you can’t do in M mode with auto ISO. It is a very unique and smart feature of the Pentax system 🙂

Previous Post
The Ghost Mushroom – Omphalotus nidiformis
Flying Duck Orchid at Peter Murrell Reserve in Kingston
Next Post
Flying Duck Orchid – Caleana major
Luke O'Brien

About Luke

Luke O'Brien runs a stall at Hobart's popular Salamanca Market every Saturday where his prints and cards are available for purchase. Follow Luke's photographic adventures on Twitter at @lukeobrienphoto, at his Facebook page or by subscribing to his email newsletter.