All Forum Comments
it is a great lens...get it.
Comment by pschlute posted on Pentax 300mm DA* f4 users? at 21/05/2009 - 14:20
I have the K-mount version of this lens. Lovely bit of engineering with the dial-in filters.
However as has been pointed out it is not much of a fisheye on the crop sensor, and because you cant use a hood it tends to produce flat images when the sun is out.
However as has been pointed out it is not much of a fisheye on the crop sensor, and because you cant use a hood it tends to produce flat images when the sun is out.
Comment by pschlute posted on Pentax M42 4/17mm Fish-Eye on flea-bay at 21/05/2009 - 14:07
Max
If you really want to try the manual focus go for the A 1.7 or 1.4
Image quality will be great on both. If you cant get one at the right price go for the f2
The f1.2 will cost an arm and a leg, and the image quality will not be better than the 1.4 or 1.7, and may even be softer until f8.
If you really want to try the manual focus go for the A 1.7 or 1.4
Image quality will be great on both. If you cant get one at the right price go for the f2
The f1.2 will cost an arm and a leg, and the image quality will not be better than the 1.4 or 1.7, and may even be softer until f8.
Comment by pschlute posted on 50mm lenses at 20/05/2009 - 22:26
Mike-P wrote:
And this is exactly my point, how are people going to know about the brand if they cant even be bothered to put a simple flash advert on the main UK website. Absolute madness, their advertising section should be shot.
Agreed. The Pentax uk website has always been very out of date.And this is exactly my point, how are people going to know about the brand if they cant even be bothered to put a simple flash advert on the main UK website. Absolute madness, their advertising section should be shot.
Comment by pschlute posted on New K-7 Specifications. at 20/05/2009 - 09:28
Tim
That is an f2.0 lens. So about 1 1/2 stops slower than the f1.2. But a very fine lens anyway.
That is an f2.0 lens. So about 1 1/2 stops slower than the f1.2. But a very fine lens anyway.
Comment by pschlute posted on Shallow DOF at 19/05/2009 - 23:12
Nice image Sue. I like it.
Comment by pschlute posted on 1940's Singer at 19/05/2009 - 23:08
Ok I am getting the hang of the ETTR idea. I took these two tonight. One was a "normal" exposure where the histogram was generally to the left hand side. The second was exposed at +1.5 ev.
The luminance histogram now more to the right, but the red chanell was overexposed. I brought the red channel back down in Silkypix so it was not blown.
I used "emphatic sharp for both pictures. I can really see the difference in noise
If this was a serious photo I can see that I can work on any remaining noise much better by exposing this way.
The luminance histogram now more to the right, but the red chanell was overexposed. I brought the red channel back down in Silkypix so it was not blown.
I used "emphatic sharp for both pictures. I can really see the difference in noise
If this was a serious photo I can see that I can work on any remaining noise much better by exposing this way.
Comment by pschlute posted on Image noise on K20 at 19/05/2009 - 21:42
A question for the experts:
On my K10 I can see the individual red;green;and blue channels, plus a "brightness" histogram. Is the latter a RGB histogram or a luminance histogram ?
On my K10 I can see the individual red;green;and blue channels, plus a "brightness" histogram. Is the latter a RGB histogram or a luminance histogram ?
Comment by pschlute posted on Image noise on K20 at 19/05/2009 - 17:06
Some people like to remove the AF from the shutter button half-press. They use the AF button to auto-focus, and know that the shutter button wont interfere with the chosen focus.
The AE-L lock is very useful. Lets say you have a lot of sky in your image. If you let the meter do it's thing normally you will probably have an underexposed subject (foreground). By pointing the camera down so you have very little sky and then pressing AE-L you lock the meter reading. It wont change as you move the camera back up to frame the picture. The subject will be then perfectly exposed. This is especially useful if you are using spot metering.
The AE-L lock is very useful. Lets say you have a lot of sky in your image. If you let the meter do it's thing normally you will probably have an underexposed subject (foreground). By pointing the camera down so you have very little sky and then pressing AE-L you lock the meter reading. It wont change as you move the camera back up to frame the picture. The subject will be then perfectly exposed. This is especially useful if you are using spot metering.
Comment by pschlute posted on K20d settings at 17/05/2009 - 16:46
Strange. I find the opposite to be true: the K10 generally underexposes a bit to protect the highlights ?
Comment by pschlute posted on Auto-Bracket at 17/05/2009 - 13:05
