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johnriley

Joined: 19th March 2002

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johnriley
There are plenty more shots in my EPZ Blog and also still to be processed.

Comment by johnriley posted on Portmeirion at 21/07/2014 - 15:40

johnriley
Yesterday we spent the day in Portmeirion. As is so often the case the weather there was beautiful. It seems to have its own sheltered micro-climate.

A few selections from the day:
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Comment by johnriley posted on Portmeirion at 21/07/2014 - 13:47

johnriley
The camera won't overheat, it will as far as I know turn off for a while to cool down. 30C is hot, but unless it's in direct sun for a long time, which might heat the camera up well beyond 30C, in itself that shouldn't really be a problem.

As for all the corrections, they will slow things down, but unless they were actually set it seems odd behaviour.

My suspicion is that in the sun and heat the camera's internal temperature rose too high.

Comment by johnriley posted on K3 heat wierdness at 21/07/2014 - 10:14

johnriley
A great place to visit and a nice set of images. It's a real pleasure to get absorbed in a place and enjoy just shooting images.

Comment by johnriley posted on Coombe Gardens, a Colour Blast at 20/07/2014 - 23:00

johnriley
It's worth having a play with to see what it's like. At £5.52 there's not much to complain about!

Comment by johnriley posted on I know, I'm stupid! at 19/07/2014 - 12:54

johnriley
Old film can stay good for a remarkably long time. I've been selling glass plates dated 1948 and people are using them successfully.

Probably downrate the film, so perhaps try ISO 25 and extend development by perhaps 20% and see how that turns out. It is possible to add anti-fogging agent to the developer as well, but I suspect you won't need to go that far.

If you are relying on a lab to process your film, then I would have a word with them first to see what would suit their systems best.

Comment by johnriley posted on Old film Old camera at 18/07/2014 - 17:50

johnriley
A 400mm f/2.8 lens, say, would be very fast, very bulky and very heavy. There's a natural limitation in terms of bulk and cost. Personally, the 500mm f/4.5 lens I sold recently was heavy enough, although remarkably light for what it was. I suppose it's all relative.

Comment by johnriley posted on Why bother? at 18/07/2014 - 17:47

johnriley
An adapter wouldn't need an extension tube, it would still use the K mount, so no adapter would be needed. The K mount is a full frame mount already.

Lenses are made to cover an image circle of a particular size, so most existing lenses won't cover the full area of FF. Some will, depending on the design.

Using an extension tube just enables a lens to focus closer, but we lose infinity focus and it doesn't change the image coverage.

I would suspect any FF body would have a DA setting so APS-C lenses could be used as APS-C lenses are now, using part of any larger sensor.

Comment by johnriley posted on Why bother? at 18/07/2014 - 11:26

johnriley
pentaxian450 wrote:
johnriley wrote:
the K20D and K-7, using the same sensor as your K10D,
:::

The K10D has a 10Meg CCD Sony sensor. The K20D and K7 both have a 14.7 meg CMOS Samsung sensor.
You're quite right.

Comment by johnriley posted on Pentax K7 at 17/07/2014 - 08:08

johnriley
A lot of good sense has been put forward. I've been looking at the image for a while and the arrangement is basically a great idea. The pitfall for me is the melee of feet. If this were one person then the feet could be arranged neatly, whereas here they are pretty much all over the place. I would have either choreographed the feet to be all the same pose, or not included them at all.

Remove the feet from the equation and we have a nice triangular composition.

Comment by johnriley posted on Image Critique Request at 16/07/2014 - 08:11

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