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johnriley

Joined: 19th March 2002

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johnriley
Also bear in mind that lenses perform best at mid apertures, maybe around f8 for most good lenses, probably more like f16 for not so good lenses. Balance this against DOF requirements.

As for taking a cliff side from a distance, if the cliff is parallel to the camera then there will be enough DOF at almost any aperture, so choose the optimum one for quality. Flat subjects do not need massive amounts of DOF.

Comment by johnriley posted on newbie question: DOF in landscapes at 05/06/2009 - 18:34

johnriley
If you want one thing is sharp focus and the background blurred, use a wide aperture and focus carefully on the thing you want sharp.

If you want everything sharp from front to back, then use a small aperture, maybe f11, f16 or even f22, and focus on a point one third into the scene. This is the hyperfocal distance, give or take a bit, and is a very useful "rule of thumb" that will give you the maximum DOF in a scene. If the shutter speed ebcomes too slow, then use a tripod. In fact, for lanscapes, use a tripod wherever possible.

Comment by johnriley posted on newbie question: DOF in landscapes at 05/06/2009 - 18:21

johnriley
Unfortunately the quoted statement is very misleading, contradicts itself and is pretty much wrong.

Comment by johnriley posted on Focusing issues on parrot.... at 05/06/2009 - 08:41

johnriley
Everyone?

Comment by johnriley posted on Weekly Competition #100 - Self Portrait at 04/06/2009 - 22:38

johnriley
There are continuous cold lights, but I think the flash kit will cost quite a bit less.

Comment by johnriley posted on Continous lighting for product shots at 04/06/2009 - 22:37

johnriley
Why continuous lighting? Would a modest 2 head flash kit not be more economical?

As regards saving money though, will any saving be worth it considering how much of your time it will take up. What about your Director function - do you want to become a photographer for the company instead?

:

Comment by johnriley posted on Continous lighting for product shots at 04/06/2009 - 13:24

johnriley
There are some cheap and arather dire 500mm mirror lenses, but as far as I know you should be OK with Tamron, Vivitar, Pentax for longer ones of course but expensive, Tokina and possibly others.

Avoid the ones that used to sell new for £100.00

Comment by johnriley posted on 500mm mirror at 04/06/2009 - 11:43

johnriley
Yes, the diagonal is always the measurement given.

Comment by johnriley posted on Angle of view for Pentax M lenses at 03/06/2009 - 12:55

johnriley
Chosen by Lilly, the winner of #99!

Don't forget that I want to get a copy of the winner of this competition in to the magazine in time for the new issue, so I'll be in touch with the winner as soon as we know who it is to make arrangements.

Comment by johnriley posted on Weekly Competition #100 - Self Portrait at 03/06/2009 - 10:58

johnriley
It's essential to read the submission guidlines thoroughly and stick to them.

Take fotoLibra as an example. In camera sharpening is OK, Photoshop sharpening is not. JPEG Quality 12 only. 300ppi. Minimum file sizes are also given.

There is no point submitting images that do not comply with the requirements.

Hope that helps!

Comment by johnriley posted on Stock Photography at 03/06/2009 - 10:09

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