All Forum Comments
Comment by prsjnb posted on Sigma 24mm Super Wide II at 20/06/2021 - 13:19
I'm pretty sure my ego wouldn't cope well with that sort of exposure so kudos to anyone who puts themselves through it.
K.
Jon
Comment by prsjnb posted on Disappointed at 10/06/2021 - 17:59
Another chance to buy them .... LINK
wonder if it's the same pair
Edit : looks like it is, same number (19) .....
Comment by prsjnb posted on For any collectors out there. at 10/06/2021 - 17:57
...of a Vine weevil, Otiorhynchus sulcatus.

Pentax K5, 100mm D FA Macro.
Auto Bellows M, max. extension.
Stack of 25 images in Combine ZP.
Elements11.
Thanks for looking,
Roger.
https://www.flickr.com/photos/188519063@N07/51238267111/in/datetaken/
P.S., Really chuffed with this one!
Comment by prsjnb posted on Portrait... at 10/06/2021 - 17:50
Spyder 4 Elite: £45.00
Spyder 3 Pro: £35.00
Based on some quick research, I believe these to be priced very fairly, but I will entertain reasonable, in the context of the intended beneficiaries, near offers.
Delivery at cost by buyers chosen carrier.
Thanks for looking




Comment by prsjnb posted on Datacolor Spyder Monitor Calibration/Profiling Devices at 23/05/2021 - 16:21
Thanks
I did shoot another image that had more detail in the background but I personally preferred the more subtle mono but we're all different so you may prefer this image instead?

P. S. Being eternally hopeful, Gareth, I've PM'd you my address
An absolutely mint Tamron SP 500mm 55B. Why? dunno really.
Roger

Comment by prsjnb posted on What's your latest acquisition? at 13/05/2021 - 20:04
Pleasantly surprised actually, autofocus isn't great but it's half decent at f/2.8

IMGP3218_Jpg by Michael Pursey, on Flickr
f/3.5 and it's very good.

IMGP3271_Jpg-1 by Michael Pursey, on Flickr
Comment by prsjnb posted on Tamron 70-200 SP Di LD f/2.8; IRIX Firefly 15mm f/2.4 at 13/05/2021 - 20:00
Comment by prsjnb posted on To birds, humans = crumbs at 13/05/2021 - 19:53






'Soft', but useable, at f/2.8. Marked improvement in resolution and contrast from f/3.2 which extends pretty much across the frame from f/3.5 when used with a K-3. By f/5.6 the results are very good in every respect with peak performance reached around f/8. The close focus capability of the lens is very useful and add considerably to its versatility. I have found the AF performance of the lens coupled with the K-3 neither whippet-, or sloth-like and not dissimilar to that of the majority of third-party screw drive lenses in my possession. I have experienced occasional 'hunting' when using AF in spot mode in low light, most often at the lower end of the zoom range. Contrary to the opinion of many users, at least judged by those posted in the Pentax Forums Lens Reviews section, I have not noticed a significant decline in IQ at 200mm. Neither have I found the AF - MF, and vice versa, changeover mechanism to be an issue.
Overall, and whilst not claiming that the performance and build quality of the Tamron is the equal of, or even close to, that of the Pentax-DFA or -DFA* equivalents, for £300 or less a copy in good condition represents good value.
Jon
Comment by prsjnb posted on What's your latest acquisition? at 13/05/2021 - 19:49


Selling as I've bought a Pentax-M 28mm and want to keep the analogue camera all Pentax so selling this on.
24mm in Pentax-A mount. Focus is smooth, aperture snappy and optics clear.
I don't have the lens hood but they can be sourced on ebay.
Looking for £40 Inc UK P&P
Jon