Photography Thailand Forum

[David Procter]

I had a wander with my camera yesterday evening for the first time in months.
Klong Toei

[bjorn slis]

great shot david, good use of dof and toning
would love to see a bigger version

[SimonP]

Really nice pic - got any more from the same evening we can see?

Simon.

[David Procter]

Yes, but the light was bad and I was lucky getting this one. I had my tripod with me and she kept still for 1/20th!

[David Procter]

The crackers one was a pretty poor exposure. Here's another of the girl.

[SimonP]

Those are two more great shots David.  As Bjorn said the DOF and Toning are really nice here.  I would love to be able to get pictures like this.  May I ask is the shallow depth of field, the colouring and the slight darkening around the edges of the  frame something that is done in-camera or in PS or a bit of both? And most importantly can it be explained easily!

Simon.

[antonie]

Great shots, I like the one of the kids with the cracker.  I wonder if somebody can give me a detailed technical explanation of the Vignette (ing) on the second and especially the bottom picture, was it;
1. Photoshop changes afterwards and if so what tool was used (lens correction (distortion)
2. The lens, if so why so clearly visible
3. What roll does depth of focus, F stop and available light play in the severity of vignette (ing)?
Many thanks

[bjorn slis]

The vignetting seems to be photoshopped, gradient fill adjustment layer, or just the burning tool.

simple explanation
Natural vignetting is often very visible in cheaper lenses, it occurs because the light falls through the lens on the film/sensor travels different lengths in the center and the corner of the image. Because of that difference the light is often stronger in the center of the image than it is in the corners. The better the lens (glass) means less loss of light means less vignetting.

[antonie]

Thanks Bjorn, I understand but am still not sure if this is the case here, maybe David could tell us what glass he used.  The reason for questioning is because on the bottom picture the Vignetting is so prominent that I thought it was enhanced by PS.  Back to my earlier question, on cheap or expensive glass, does different light levels and thus different Fstop influence the level of vignetting?

[David Procter]

Bjorn is spot on, I burned in the vignette using photoshop. The lens is the 24-70 L so no vignetting there!
In answer to Simon's question the DOF is natural I was shooting at 2.8 at ISO400 which still only gave me a shutter speed of 1/20 and for some bizarre reason I had my tripod with me (i almost never carry it) but thats phtography, you never know when all the elements are going to come together.
I'm very pleased with the toning of the first one which i did with a combination of curves and the channel mixer.
thanks for your interest!
david

[nadrah]

good try

[David Procter]

Thanks Nads

[Gubs]

nice pics, specially the railway girl.