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johnriley

Joined: 19th March 2002

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johnriley
Quote:
There are actually no arguments in favour of shooting JPEG except file size
Still beg to differ on this one.

File size
Future compatibilty and support.
Compatibility from computer to computer, anywhere.
JPEG files can and do give superb quality when correctly handled.
Speed of handling individual images (as opposed to batches)

Comment by johnriley posted on Shoot raw and auto convert or stick with Hi-Res JPG at 28/08/2007 - 16:07

johnriley
Hold the menu switch down whilst turning on the camera and the formware version will be displayed.

Try the Japanese to see if there is an English version there perhaps. Or double check with Samsung just to be sure.

Comment by johnriley posted on Samsung GX10 firmware at 25/08/2007 - 17:54

johnriley
The image size you display at is not necessarily the same as the final print size. Just "Fit to screen" to make the image the largest it can usefully display at in its entirety.

Comment by johnriley posted on Help with Photoshop at 26/08/2007 - 20:15

johnriley
I notice you're on the Isle of Skye - no fabulous sunsets to photograph tonight?

I have heard that Skye is incredible photographically. We haven't been there yet, but we plan to as soon as we can. Perhaps Skye and Mull would be a good combination for a week or so of exploration?

Comment by johnriley posted on Help with Photoshop at 25/08/2007 - 17:58

johnriley
If you have an image with an aspect ratio of say 3:2 then it could be 3cm x 2cm or 6cm x 4cm or any other size with a ratio that remains the same. You need to crop your image to the apprpriate size otherwise as you have found you can't resize it to a different proportion. Well actually you can, by unclicking "constrain proportions" in the Image Size dialog box, but then the shape of the picture will change.

So, first things first. Open your image and then select the crop tool. In the bar at the top of the work area you can actually type in the image size and resolution that you want. So type in 18in and 6in and 300 ppi. Now when you crop it will crop and resize exactly.

Now open your "paper" by going to File>New and resize your paper, putting in the values and changing to inches in this case. Don't forget to put the resolution at 300ppi.

Now you can drag and drop your images into the paper and they will fit.

There are other ways to do this as well, but lets not cloud the issue.

Hope that helps!

Comment by johnriley posted on Help with Photoshop at 25/08/2007 - 15:47

johnriley
Not for me - far too risky!

Comment by johnriley posted on A lot to loose if one goes wrong !! at 25/08/2007 - 12:46

johnriley
The term "slightly wobbly" is a bit difficult to judge. Why not pop into a dealer and try another off the shelf? If you can find one that is...

Modern AF lenses are not totally rigid and the Pentax 24-90mm is a good example of that. However, it is a matter of degree.

Does the lens still perform OK?

Comment by johnriley posted on 16-45 construction at 25/08/2007 - 10:56

johnriley
If you read the small print, it says manual aperture adjustment only and also says the lens flange distance is altered. This means manual adjustment of aperture and also no infinity focus, as I described above.

The pin is common to all M42 lenses and is activated by a plate in the camera body on screw mount cameras. There is no such plate on K mount cameras, which use a different method to stop down.

Hence it's going to be stop down metering anyway. The advantage to the adapter you linked to is that you can put an adapter on every lens and use the K mount as a bayonet mount, but for me the lack of infinity focus would outweigh that. It would be OK if you only take close up and macro images.

Comment by johnriley posted on This M42 to K adapter ? at 25/08/2007 - 18:25

johnriley
If you set the lenses to "M" or "MAN" which is the manual setting, then turning the aperture ring will close down the aperture.

There is no auto adapter, so all aperture setting has to be done manually. Metering is still possible and is called "stop down metering" when done in this way.

Comment by johnriley posted on This M42 to K adapter ? at 25/08/2007 - 17:52

johnriley
Quote:
Does the pentax one permit the adapter to stay on the lens?
Unfortunately not. Think of it as an adapter to convert a K mount body into a screw thread one. Then you can attach and detach screw thread lenses in the usual way.

The actual technique is to screw the adapter onto a lens and then bayonet this combination onto the body. Then you remove and attach lenses as you wish, but the adapter stays in the K mount on the body.

When you wish to remove the adapter you press a small spring with a small screwdriver or similar item, rotate it gently and then let it drop out into your hand. The Pentax adapter works perfectly in this way but other makes may not fit quite so beautifully.

Comment by johnriley posted on This M42 to K adapter ? at 25/08/2007 - 10:49

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