|
Forum: Pentax SLR Lens Discussion
10-05-2018, 03:34 PM
|
| |
Hi there,
I have had 2 copies of this lens and both were 3.5-4.5, not the 5.6 you mention. My first shattered internally after a drop on to a hard surface floor and I thought enough of the useful fl to buy a second copy. Yes it does lack critical sharpness when compared to some other Pentax film era lenses, but it gave sharp enough images for me to print confidently, from my MZ-S film camera at A3+ size. I found it less useful on APS-C digital and used it infrequently until I bought the K1. While waiting for the DFA 28-105 to arrive,the FA 24-90 became my walkabout zoom. I noticed that images here looked sharp enough when zoomed up to 10x for viewing on the LCD screen but then softened after 10x zoom.
It is still useful as a walkabout lens though my preference is for the DFA 28-105. It has better critical sharpness and is weather sealed.
I have 2 issues about the DFA 28-105 though: the lack of 24 mm wide end and the slowness (5.6) at the long end. I miss the 24-90 for these two features and think it was a mistake of Ricoh to opt for such a slow lens on their pro level full frame camera. The f4.5 of the 24-90 is 2/3 stop faster at its long end than the DFA 28-105. I would much rather have a 24-105 f4 as some other brands have gone for. Sure, it would have meant a larger (probably a 72mm filter size) walkabout lens but it would be more in keeping with a pro level camera.
I also have, and use on special occasions, the DFA 24-70 but due to its weight and size it is reserved for music and other genres. It's definitely not a walkabout mainstay.
I can't help compare both DFA standard fl zooms with the Sigma 17-70 that is my favourite lens for my K3 bodies. Its 2.8-4 aperture and its FF equivalent of 25-105 seems just right to me along with its 72mm filter size.
|
|
Forum: Post Your Photos!
01-05-2017, 12:31 PM
|
 | Macro Wasp
Posted By
dlai |
Replies: 10
Views: 1,083
|
|
Nice detail. I don't like getting so close if there is a nest nearby!
It looks like a Vespula germanica because of the continuous yellow band behind the eye. This is a diagnostic feature we use in New Zealand to differentiate between two introduced wasps - V. germanica and V. vulgaris (="Common wasp").
|
|
Forum: Pentax K-1 & K-1 II
06-06-2016, 11:34 PM
|
| |
I have two K3 bodies and have used them extensively for forest wildlife photography. Photographing under the canopy often results in a high ISO being required and the K3s were very often working at 6400 ISO with consequent noise issues. I've started using the K1 at up to 12,800 ISO and find the K1 copes remarkably well as shown in the attached image despite the strong skylight.
Shot with DA*300mm lens plus HD 1.4x TC.
ISO 12,800
+ 1.3 stops exposure
Exposure 1/200 f8 (f 8 to bring some of the Lemonwood fruits into focus)
Daylight setting
Noise set to high ISO auto in camera
Processed in PDCU with noise removal using the setting decided by the PDCU
Post processing in Photoshop: some lightening of the bird, mid-tone contrast slider at 15%, sharpened at 50%,1.5 pixels in Smart sharpen/Gaussian blur setting.
The background was selectively darkened to reduce strong backlighting with saturation and contrast reduced.
Forgot to mention: this was taken with the APS crop mode
|
|
Forum: Pentax K-3 & K-3 II
11-05-2015, 05:10 AM
|
| |
Hi, I found the on/off for flu card in the menu would only change from greyed out to active if in the menu I go to the memory card options and do a change there, that this will change the flu card setting from greyed out to active and the card can be turned to off.
When using the flu card I have card 1 set on raw and card 2 on jpeg. By reverting to another setting such as solely to card 1 (raw) this enables one to access the flu card on/off setting.
|
