Search results for 'uv filter' - page 41
Filter test with spectrometer
An interesting read! Thanks Andy
Posted by alfpics on 29/02/2012 - 08:26
Filter test with spectrometer
Very Interesting. I'll have to compare the spectra of my UV filters with what they've got. (I've only run the spectra on one to date and that in absorbance rather than transmission) They do have one minor error though - the Hot mirror used infront of the sensor to reduce the sensitivity to IR doe...
Posted by petrochemist on 29/02/2012 - 13:31
Filter test with spectrometer
Seconded. Likewise the other information on the site Many thanks Bernard
Posted by Frogherder on 29/02/2012 - 15:02
Recommended bag for Travel Kit.
Okay, I know that the bag bit is not Pentax related, but what will go inside it will be :D So, currently I have a number of bags and backpacks for my kit, depending on where I am going. I have the following:- Lowepro Mini-Trekker AW backpack Lowepro Sling 222 AW Lowepro Orion Trekker Cheap ...
Posted by Offertonhatter on 26/03/2012 - 20:35
Apples Macs infected with trojan
Curiously enough - last week I was 'treated' to a spam attack from Russia - all were in a cyrillic font which aroused my suspicions from the start. All were caught by the spam filter and I must have had about 90 in roughly 3 days - none since.
Posted by techno-terminator on 05/04/2012 - 12:39
Grunge photography
The Old Serpentine Works......Guarded By The Serpent used a grunge filter on the photo of the ruins with a bit of levels and colour tweaks
Posted by redbusa99 on 04/06/2012 - 15:56
Is this a good IR filter for my Pentax k-r?
Hi, I have been looking for an IR filter for my k-r to take some cool infrared photos and saw this Hoya R72 IR filter on ebay: http://www.ebay.co.uk/itm/Hoya-52mm-52-mm-R72-Infra-Red-Infrared-Filter-In-UK-/260518548976?pt=UK_CamerasPhoto_CameraAccessories_CameraLensesFilters_JN&hash=item3ca81d95f0...
Posted by SoWhat on 09/04/2012 - 11:30
Is this a good IR filter for my Pentax k-r?
Used several different filters but there not much use if you want to take this type of photography get your converted to IR instead of using filters.
Posted by rosesred on 09/04/2012 - 11:36
Is this a good IR filter for my Pentax k-r?
Thing us, I haven't really got the money at the moment to convert my camera. Would this filter be a decent compromise?
Posted by SoWhat on 09/04/2012 - 11:41
Is this a good IR filter for my Pentax k-r?
Hi Daniel I have this filter and have used it on several occasions. It is definitely not as good as converting your camera to IR, I wouldn't necessarily agree with the post above that they are 'not much use'. Please see links below for a few shots taken with this filter and the 18-55 kit lens: ...
Posted by davidstorm on 09/04/2012 - 11:46
Is this a good IR filter for my Pentax k-r?
There's a pseudo-IR filter built into the Kr. Set it up in Filter mode. It may even give you the kind of results you want without the added expense of buying a dedicated filter.
Posted by steven9761 on 09/04/2012 - 11:56
Is this a good IR filter for my Pentax k-r?
There's a pseudo-IR filter built into the Kr. Set it up in Filter mode. It may even give you the kind of results you want without the added expense of buying a dedicated filter. I'd second that. I have the filter you mention and usually get better results with the 'filter' built in to the K-r. Of co...
Posted by milamber on 09/04/2012 - 11:58
Is this a good IR filter for my Pentax k-r?
There's a pseudo-IR filter built into the Kr. Set it up in Filter mode. It may even give you the kind of results you want without the added expense of buying a dedicated filter. Hi Steven, the pseudo IR filter that is built in does not give the same results. You do need an add-on filter at the very...
Posted by davidstorm on 09/04/2012 - 11:59
Is this a good IR filter for my Pentax k-r?
The R72 filter will remove almost all light apart from IR, so it's the right filter for the job. On film then you just need some IR film, no problem. On digital it depends how much IR light the camer's own filters will allow through to the sensor. Some DSLRs are better for this purpose than other...
Posted by johnriley on 09/04/2012 - 12:21
Is this a good IR filter for my Pentax k-r?
Thanks for the advice everyone. I also found a suntec ir filter: http://www.ebay.co.uk/itm/Brand-New-Suntec-52mm-Infrared-Filter-750nm-IR750-/130589433211?pt=LH_DefaultDomain_3&hash=item1e67bc9d7b#ht_1462wt_981 Would this also be an option or is the Hoya much better?
Posted by SoWhat on 09/04/2012 - 12:34
Is this a good IR filter for my Pentax k-r?
Hoya Infrared R72 Filters are best or even better IR converted.:D
Posted by puma on 09/04/2012 - 14:02
Gallery Views
'tisn't the record for any number of days. https://www.pentaxuser.com/photo/rachel-number-3----at-last---3433 that one has had 1292 views. If you filter the gallery for the most viewed photos you'll see that naked ladies are the most popular. :lol: That one of Shaun's is no. 18 at the mo...
Posted by Charlotte on 26/04/2012 - 20:07
Gallery Views
If you filter the gallery for the most viewed photos you'll see that naked ladies are the most popular. :lol: Thanks Charlotte, I'm being a bit thick, hadn't realised you could filter by the number of views! No surprises with the naked ladies, but all the more impressive that Shaun's is a landsca...
Posted by davidstorm on 26/04/2012 - 20:18
Gallery Views
I never knew about that feature, it's quite interesting.:shock: If you filter the gallery for the most viewed photos you'll see that naked ladies are the most popular. :lol: Well Charlotte unfortunately men's brains are programmed by evolution to be attracted to the female form, and there's n...
Posted by timbo on 28/04/2012 - 18:20
help with filters
Richard - I'd say that high on your shopping list should be a good UV filter, and you won't go amiss adding a polarising filter to your armoury either.
Posted by steven9761 on 27/04/2012 - 13:04
