May 2024 Daily Themes

[dreampolice]

Artificial by Nigel G, on Flickr

[petrochemist]

Artificial engine trouble
Flying Fortress - Sally B by Mike Kanssen, on Flickr

[peterob]

Until I was playing with the ringflash last year I hadn't realised that these never-watered pot plants outside the front door were fake.


274A1957.jpg by Pete, on Flickr

much more obvious but seen from a couple of yards still quite convincing.

274A1958.jpg by Pete, on Flickr

[zx9]

Grave goods.

Camberwell New Cemetery IMG_6459edit by Keith Hudson, on Flickr

[zx9]

Flowers.

St. Katherine Dock IMG_9905edit by Keith Hudson, on Flickr

Sorry for not playing more lately, work has been getting in the way of things more pleasurable.

[kate]

Aperture wide open.

ap aperture wide open 4 by Kate Ferris, on Flickr

ap aperture wide open 1 by Kate Ferris, on Flickr

Extreme narrow dof!

[peterob]

May 9, 2024 5:55:41 GMT kate said:

Aperture wide open.

ap aperture wide open 4 by Kate Ferris, on Flickr

ap aperture wide open 1 by Kate Ferris, on Flickr

Extreme narrow dof!

I can't think of any similar examples.  The fastest lenses I have are F2.8- one is macro  that is always used stopped down and the other a 70-200 zoom which LR shows was used at F2.8 mainly for family photos at a distance so dof effects are due as much to focal length as the aperture.  Everything else I have is F4 or slower, the  slower lenses generally being telephoto.

Having a think ..  I am reasonable sure this Zoo picture (2014) was taken at F2.8 with the 70-200 at 200 mm in order to throw the foreground wire mesh out of focus, although the mesh can be seen in the background.   It didn't otherwise need to have an exposure time of 1/800s.  

BV9R0295.jpg by Pete, on Flickr

[Kath]

240505-Sea Anemone-001 by Kath Polley, on Flickr

Sea Anemone - f/2.8, from this weekend.

[petrochemist]

My 50mm/1.2 doesn't actually have a built in aperture, though I do tend to add a card one to slow it down a little. Here's a shot with it unobstructed
50mm/1.2 projector lens test shot wide open by Mike Kanssen, on Flickr

[petrochemist]

A couple that are wide open for light gathering reasons (& not so very wide on these lenses!)
Fire-dancing by Mike Kanssen, on Flickr


Bedroom view by Mike Kanssen, on Flickr

[kate]

I should have said my shots above, taken yesterday, were at f/1.7. Next time if I use this aperture, it's going to be camera on tripod!

[petrochemist]

May 9, 2024 5:55:41 GMT kate said:

Aperture wide open.

Extreme narrow dof!

Extremely short DOF reminds me of this shot through a microscope (again no aperture to play with). I actually used half a dozen stacked images to try & boost the DOF but high magnifications really reduce DOF. FWIW It's the ankle of a fly, & DOF of each shot would be best measured in something like microns

House fly ankle by Mike Kanssen, on Flickr

[El Sid]

Not quite wide open but f5 on an f4 lens...


C'mon If You Think You're Strong Enough-09 by Nigel Hayes, on Flickr

[dreampolice]

Just now. At 300mm on my zoom, wide open isn't that wide!

Squirrel by Nigel G, on Flickr

[dreampolice]

Pretty wide at F2

Ball Selfie by Nigel G, on Flickr