Algernon

Joined: 22nd May 2010

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Algernon
Twofer a Quid!

Comment by Algernon posted on Forfar Asdas at 17/06/2011 - 19:08

Algernon
Algernon wrote:
I've just done a quick test at 500ISO and 800ISO all noise reduction switched off to see if the noise is the same or different. Results in about half an hour
I also included 400ISO.

There is a difference between 400ISO and 800ISO... not massive but it is visible.

Between 500ISO and 800ISO I can't see any difference.... so no point in using ISO settings between FULL STOPS... i.e. Use 400ISO or 800ISO

Comment by Algernon posted on 1/2 or 1/3 EV stops? at 17/06/2011 - 18:29

Algernon
Any decent camera shop would have given you 2 FREE!

Comment by Algernon posted on I can't resist the pressure any longer at 17/06/2011 - 17:57

Algernon
For things like big white birds (Sw**s) it's handy to look at the overexposed warning on the preview and reduce the exposure in manual in 1/3 stop steps until you get rid of the warning.

I've just done a quick test at 500ISO and 800ISO all noise reduction switched off to see if the noise is the same or different. Results in about half an hour

Comment by Algernon posted on 1/2 or 1/3 EV stops? at 17/06/2011 - 17:55

Algernon
Extensive scientific tests were done on the K-7 anti-shake by Lumo Labs on the US forum and papers published... apart from a small problem with wide angle lenses at around 1/100th sec. everything worked quite well

Comment by Algernon posted on K-5 Anti Shake at 17/06/2011 - 16:46

Algernon
Peter's from an electrical background so I'm sure he can decide if he needs to wait 4-8hrs to fully charge or just give it 1 hour to put enough in to allow some practise shots

I've mentioned before Pentax are giving their customers a very poor Welcome and 1st user experience by supplying cameras with flat batteries

Comment by Algernon posted on I can't resist the pressure any longer at 17/06/2011 - 16:40

Algernon
The in camera NR (which I've not tried yet) is applied in units of full stops. I've not tried either to see if 800ISI is noisier than 500ISO?

I used to use 320ISO as my limit on the K20D and always thought it wasn't as noisy as 400ISO which was just getting unacceptable

My K-5 is set to 1/3 stops which is slightly more accurate for exposure although the K-5 is quite good at letting you adjust the exposure afterwards. So maybe 1/2 stops are OK depending on whether the noise level changes.

Comment by Algernon posted on 1/2 or 1/3 EV stops? at 17/06/2011 - 16:18

Algernon
Mike-P wrote:
I used to use 1/3 stops until I read somewhere that it is not a true setting and can actually make the image noisier. It is basically the camera altering the exposure via inbuilt software and you are better off doing it in processing.
Are you sure that your not getting mixed up with the ISO settings Mike?

On some makes it's claimed that they only have settings at 100ISO 200ISO 400ISO 800ISO 1600ISO etc. and calculate the others from the next one up so 500 600 700 are the same in terms of noise as 800ISO and there is no advantage in setting them under ISO sensitivity

Does this apply to Pentax?..... 1st Golden Rule of Photography... Know your equipment

Comment by Algernon posted on 1/2 or 1/3 EV stops? at 17/06/2011 - 15:48

Algernon
One of my favourite photographers uses a Nikon 28-300mm almost exclusively on his (full frame) camera... It's the only lens you'll ever need

Lens creeps unavoidable with some lenses

Comment by Algernon posted on Bought a Sigma 28-300 at 17/06/2011 - 15:09

Algernon
johnriley wrote:
Quote:
I would expect that it is the responsibility of any repairer to weatherseal the camera in accordance with the manufacturers specification and that they would be liable for any leaks as a result of poor workmanship.
I was just wondering if we would end up in some cases with caveats on repair invoices, just like many watch replacement services do.
I've not got a Samsung GX10, but I have the service manual in PDF format. It shows a lot of color photos of all the seals and has notes indicating that they are part of the servicing procedure: i.e.

Ⅳ. SERVICE INFORMATION
[Cautions of the sealing assembly]
• Take care of the twisted narrow sponge (Around the A301, A401, M311)
• If there are any damages on the waterproof parts, you must change them.
• Do not re-use the rubber sponge.
• Repeated assembly and disassembly may cause the decreasing waterproof capacity.
• If the duration of the parts are decreased, you must change them.207


So it's down to the repairers to do the job correctly

Comment by Algernon posted on interesting read: Pentax vs Nikon... at 17/06/2011 - 12:01

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