In photoshop you have the option to chose an image compresion, zip was among them but the file will say TIFF and can be opend as a normall photo.
You can also chose LZW (don't know what that is and JPEG as compresion.

I've winrar so will zip and rar them on the highest compresion okay and see what it does.

Just an idea and I've no idea if it work so I ask you wise guys here .
Could you just use an a little bit of flash to get down the iso but without that the photo feels unnatural. The subject would be a bit brighter compared to the background but that would be quite a good thing because you want the focus on that, right.
Any thoughts or experience?

Well lets test the file size it's easely done right

Camera Pentax K10D set on manual mostly white/creme colour in the photo.
PEF = 8,15 MB
DNG = 16,1 MB
JEPG *** = 1,84 MB

Used lightroom 2.2 to get to photo from the card and compressed them to DNG, works only with raw so JEPG stays the same.
PEF > DNG = 6,94 MB
DNG > DNG = 7,14 MB
Quite strange, they are close together but it seems that PEF might have lost some detials somewhere or not?

Now opend them in Photoshop CS4 extended and saved them to TIFF with zip compression.
PEF > TIFF = 8,71 MB
DNG > TIFF = 8,86 MB
PEF > DNG > TIFF = 8,71 MB
DNG > DNG > TIFF =8,86 MB
Off these I can say that Lightroom did a good job and that no noticable data has been lost by the compression done by it, I hope you think the same.
The camera Probable do something with the PEF file, I don't know to be honest, it do offer a good compression compared to DNG (by the camera).

The lens hood will provide much better protection and also helps against flares at the same time. I've bought only two UV filters and that was for my first two leneses, havent bought one for my latest two.
The coating on the lens it's self is already very tough so I believe that UV filter wont ad much protection.
Although there are some condition where a UV filter might be a good idea, like for example the salt water off the sea or when you get in a sand storm.

also a little scratch wouldnt harm your lens, torn off a little corner of a post-it note and stick it onto the lens and look though the viewfinder at what you see or what you don't see, to be more exact.

You can convert them with the newer photoshops not sure about the older ones.
With photoshop you get Adobe camera raw. you can maybe set it up like that it imports and convert pef from you card to highly compress DNG on your harddisk. If you are also going to save your DNG files from the camera straight to your pc it will fill up quite hard to, it really saves 55% on file size or maybe even more if your pc compress them into DNG.

to go just a bit from the topic, how do TIFF and camera raw compare?
can i still play with the white balance in TIFF without downgrading the image quality?

Here is an good read on the net link
There really isn't so much too it besides what you read there.

I see you shoot in DNG, so far as I know there isn't a diffrence then with PEF besides that PEF gets compressed more without loosing quality.
If your software can handel PEF use that instead so that you can make more photos.

Most come down to camera handeling, you can't really compare photos on sharpness on the net.
The 55-300 is a sharp lens with alot off contrast, there are some spotters here too that also have that lens I believe *searching*
Oh Cliff has one, splendid
here take a look link

You forget that there is an diffrent sensor in it and it's probable a bit heavier since most of the things are buildin into the CMOS sensor.
I don't know if that true but I think it's heavier.

If you read the article at my first post you will see that only the Olympus system works a bit and that one moves ultrasonic (above 20 kHz) while pentax clearly doesn't, the 100 Hz range they say so maybe pentax need to aproach it differendly.

Btw I like the way Sigma has done it!


it's an filter that removes the infrared light just like most sensor have it on the sensor.
If pentax would do that as well and make it weather sealed you would have trully a 100% weather prove camera, so no worries while changing the lens in the rain and dust doesnt even get in

Ah okay Martin
I haven't thought about it at all but it was just the thing that came up when I readed your comment.
The bugs would be much harder to fix then to change the ranking so let them have there fun

But you're completly right about the intimidating part so some changes would be welcome in me eyes.

The same here Father Ted

Good comment Martin and you're quite right.
To go on over your idea, I've a suggestion.

Might it be an idea that you can chose your title yourself out of a number of option. Those options would of course be based on types of photography, skills, how long you have been a pentaxian and things like that.
Of course its not perfect but atleast it gives your more information about a fellow member then what there is now.

It's based on the number of new posts, so everytime i make an new comment it counts as 1 post.
Because I write this in an edit now it wouldn't count as an post.
Does this answer your question?