Search results for 'uv filter' - page 249
Macro flash
The AC160fc would be fine with this lens. A 49MM adaptor ring is provided that would screw into the filter thread at the front of the lens. The flash then clips onto the ring - simple eh!:D A Special adaptor is also provided for the D FA Macro lens. this fits onto the bayonet fitting for the le...
Posted by mayday on 25/01/2010 - 19:01
flash gels
Your flash is daylight (or very close to that) so simply set your camera on daylight and take a photo of something white and you can match the colour for the filter you need to use. At least that's how I do it and I ain't no expert :?
Posted by Anvh on 23/03/2010 - 21:34
Ringflash with Sigma lens
1 Which Pentax ringflash? 2 What is the filter size of your lens? 3 Are you sure this is an appropriate lens to use with a ringflash? G PS: The answer to 3 should probably be No.
Posted by George Lazarette on 07/05/2010 - 23:44
Faster syncspeed?
Stefan, Well, it's not really going to help you that much anyway :P 1/180 to 1/200 isn't even half a stop, and 1/180 to 1/250 is, what, half a stop? :? For what you want to achieve, your best option is an ND filter (apart from another flash) ;) Matt
Posted by MattMatic on 18/05/2010 - 17:14
Faster syncspeed?
Stefan, Well, it's not really going to help you that much anyway :P 1/180 to 1/200 isn't even half a stop, and 1/180 to 1/250 is, what, half a stop? :? For what you want to achieve, your best option is an ND filter (apart from another flash) ;) Matt Yeah I know but it's still half a stop and...
Posted by Anvh on 18/05/2010 - 17:30
LED ring lights, use of?
LED's are closer to a compact flourescent than a tungsten/halogen source. [*] In particular, they emit a single frequency of light - white LED's are basically Blue/UV LED's that excite a number of phosphers. As a result, you get a very poor spectrum (CRI) from the bog-standard ones found in consumer...
Posted by flossie on 05/06/2010 - 23:17
LED ring lights, use of?
Really George? You do know that - until a few years ago - said LED macro ring light would have had to have a laser classification (probably class II) and was subject to the same testing & certification rules (EN 60825). You can even go into Maplins and buy a "Laser" that is actually an LED source. ...
Posted by flossie on 06/06/2010 - 18:23
LED ring lights, use of?
Really George? You do know that - until a few years ago - said LED macro ring light would have had to have a laser classification (probably class II) and was subject to the same testing & certification rules (EN 60825). You can even go into Maplins and buy a "Laser" that is actually an LED source. ...
Posted by George Lazarette on 06/06/2010 - 19:14
Pentax AF240Z questions
Following my successful experiments with the AF200T I've bought an AF240Z, mostly as I wanted a swivel head. This turns out to work perfectly with the K-m if you put both in Program mode - as you change ISO on the camera it changes the aperture, just as the chart on the back of the flash suggests. I...
Posted by Dangermouse on 14/07/2010 - 18:49
Pentax AF240Z questions
Hi Matt, I too have a AF240Z amongst my collection of flashes. Regarding the swith marked 'zoom' as far as I am aware moving it does not change output power. As you say it moves the distance/aperture scale, so when using the flash in manual, you would ensure that the setting on the head matches t...
Posted by stevejcoe on 14/07/2010 - 19:48
Sigma EM-140DG Ringflash...
Hi Chris, that sounds very tempting, although being a bit of a luddite... how does the flash attach to the front of the lens? Does it use the filter thread? and if so, does sigma produce an adapter for 49mm threads? I use the DFA 100 macro a lot but that has a 49mm thread; and I am not sure whether ...
Posted by matwhittington on 19/10/2010 - 20:48
Sigma EM-140DG Ringflash...
Hi Mat, It uses the filter thread and the flash comes supplied with 55mm and 58mm rings. You can either use step-rings to use with the supplied rings or purchase other ones which match the filter thread of your lens. We sell all sizes which range from 52mm to 77mm. Hope this helps!
Posted by Chris@SRSWATFORD on 19/10/2010 - 20:58
Sigma EM-140DG Ringflash...
Hi Mat, It uses the filter thread and the flash comes supplied with 55mm and 58mm rings. You can either use step-rings to use with the supplied rings or purchase other ones which match the filter thread of your lens. We sell all sizes which range from 52mm to 77mm. Hope this helps! Chris - so ...
Posted by ISO on 20/10/2010 - 10:27
Metz 48 or 50
I've not looked into it closely as I can't afford to replace my 48 anyway, but my reading of it was that it is now able to filter out the pre-flash.
Posted by Road_Dancer on 17/11/2010 - 17:56
pentax ring flash
Lens Adapter rings are available in 49mm, 52mm, 58mm, 67mm filter threads, as well as a macro adapter for PENTAX D-FA series macro lenses. If your lens filter thread is 55mm diameter, use the 58mm or 67mm adapters with a 55-58mm or 55-67mm (preferred) stepper ring. The larger ring is preferred be...
Posted by Mannesty on 30/01/2011 - 10:56
Wireless trigger for studio lights
Maybe I should clarify... yes, top sync speed is 1/180. This is a mechanical limitation. Pentax chose to not add cost to increase shutter speed. We'll live with that choice. The choice I have a hard time living with sometimes is that the flash sync pins are disabled above the sync speed. It is...
Posted by amoringello on 14/03/2011 - 10:40
Wireless trigger for studio lights
used to be able to do that with my canon g5, but still with the d-slrs I fail to see any need... what I know from doing this with my g5 is this.. it only is useable over a small range of lighting situations... anywhere you can actually use it, truthfully, you can get equally good results by shoot...
Posted by Don on 14/03/2011 - 17:59
Wireless trigger for studio lights
An ND filter doesn't cut out just ambient though. It will cut all light. The thing with higher sync speeds is cutting out ambient light. Yes you could use an ND and then set the flashes to much higher levels but sometimes you are already working at full power.
Posted by Tyr on 14/03/2011 - 19:13
Wireless trigger for studio lights
Can't you just put a ND filter over the lens? f/2.8 with studio flash may not be possible unless you can turn it down to 1/8th or 1/16th power. At f/2.8 Tungsten would be better.
Posted by Algernon on 18/03/2011 - 19:04
Wireless trigger for studio lights
Can't you just put a ND filter over the lens? f/2.8 with studio flash may not be possible unless you can turn it down to 1/8th or 1/16th power. At f/2.8 Tungsten would be better. One reason Metz 58s are so good. They go down to 1/256!
Posted by Tyr on 18/03/2011 - 20:41
