All Forum Comments
Comment by doingthebobs posted on Manual focus zooms on dslr question at 14/07/2013 - 17:15
The focal length setting is for calibrating the Shake reduction on the camera.
You could try setting to a mid position and hope it won't make much difference or just turn the shake reduction off and use the camera as normal, you just don't have the advantage of the shake reduction. When the shutter speed is fast enough and the camera is held still the shake reduction will not be needed anyway. It is very useful when the shutter speed gets low but it needs to have an idea of the focal length used but the older lenses don't tell the camera this like the new lenses do.
You should use the actual focal length marked on the lens as this is what the Shake reduction system needs to work accurately. E.G. If the lens is a 28mm, set 28mm.
Hope this helps.
Comment by doingthebobs posted on Manual focus zooms on dslr question at 14/07/2013 - 10:03
The software is developed over time as well. E.G. newer versions with the newer cameras.
Comment by doingthebobs posted on Pentax's Own Software at 02/07/2013 - 23:02
If I had the ability to do what some of you seem to be able to do on the processing side, I might not.
I have low skills in processing, usually shoot jpegs and have Photomatix software. I have learned how to not make the use of HDR too obvious and it helps me get the picture I want sometimes.
Comment by doingthebobs posted on Do We Need HDR? at 29/06/2013 - 22:56
My refund offer still stands, send it back.
Comment by doingthebobs posted on FS: Vivitar 28mm f2.8 at 27/06/2013 - 18:51
They make lots of waterproof bags and are well respected in canoeing/diving communities. Very robust kit and good on their prices.
Only link i have with them is I have some of their bags.
Comment by doingthebobs posted on WTB Messenger Bag at 26/06/2013 - 22:44
Comment by doingthebobs posted on FS Pentax K 135mm F3.5 at 26/06/2013 - 13:37
Tried the meter today. Used a 135mm M lens and camera in manual. Took a reading with the meter and set the aperture and shutter as read from meter. Don't think it was showing a true exposure so have removed the nice metal strap and consigned the meter to landfill
Just a thought as to why you may be getting a different reading between camera and meter.
Comment by doingthebobs posted on Help with old light meter at 24/06/2013 - 23:25
If there is a problem with the lens, please return it and I will reimburse you.
Bob.
Comment by doingthebobs posted on FS: Vivitar 28mm f2.8 at 24/06/2013 - 21:23
Comment by doingthebobs posted on FS: Vivitar 28mm f2.8 at 21/06/2013 - 18:03


So I need to change the focal length every time I zoom in or out?
If you turn the SRS off, you don't need to dial in the focal length. A good rule of thumb is for hand held photography is: keep your shutter speed at or above the the same figure as the focal length. E.G. 50th second for a 50mm, 200th second for a 200mm lens. This helps to get your shutter speed fast enough to stop camera shake. You can go slower but you are more likely to get duff pictures due to camera shake.
Of course don't forget to turn the SRS off when using a tripod or fixed support, it can actually cause camera shake!