All Forum Comments
Comment by George Lazarette posted on Question at 07/01/2008 - 17:14
If you are thinking of buying a wireless flash (like the two you mention), then you don't need a hot shoe adapter and cables.
Furthermore, pretty much the only flashguns that work fully with the K10D are wireless anyway.
When flashguns have numbers in their names, they usually refer to the power of the gun. The AF360 has a guide number of 36, and I would presume the Sigma would have a guide number of 50.
I tend to veer between using AF500 guns in manual mode (they have a built-in sensor to trigger them), and the AF360 guns in wireless mode. I seldom use cables now.
G
Furthermore, pretty much the only flashguns that work fully with the K10D are wireless anyway.
When flashguns have numbers in their names, they usually refer to the power of the gun. The AF360 has a guide number of 36, and I would presume the Sigma would have a guide number of 50.
I tend to veer between using AF500 guns in manual mode (they have a built-in sensor to trigger them), and the AF360 guns in wireless mode. I seldom use cables now.
G
Comment by George Lazarette posted on Question at 07/01/2008 - 15:28
Quote:
Hello and sorry for my bad english.
one question: does the flash AF240FT works trouble-free with K10D?
(I know that some functions not available yet - but i need only a simple flash for some situations)
Thank your for your answers.
The AF240-FT works fine on the K10D with the body and flashgun both set to Manual.Hello and sorry for my bad english.
one question: does the flash AF240FT works trouble-free with K10D?
(I know that some functions not available yet - but i need only a simple flash for some situations)
Thank your for your answers.
Mongoose wrote:
FYI the AF assist lamp on my AF240FT works wonders with my K10D. Since these flashes can't do P-TTL they often go rather cheaply on a certain auction site.
FYI the AF assist lamp on my AF240FT works wonders with my K10D. Since these flashes can't do P-TTL they often go rather cheaply on a certain auction site.
G
Comment by George Lazarette posted on Homebrew AF-assist at 30/01/2008 - 08:42
Quote:
maybe its time the government set about nationalising the drug research industry, at least in the UK.
Are you sure you mean that? However bad the drug companies may be, I am sure Mr Brown would do worse.maybe its time the government set about nationalising the drug research industry, at least in the UK.
G
Comment by George Lazarette posted on Could you do me a favour please.. at 05/01/2008 - 22:25
Quote:
How much difference does the aperature make in Macro as the Pentax is F4 and the Sigma F2:8 & the Tamron F2:5. I've found out some info on the Pentax & Tamron models but not much on the Sigma anyone used it.
You would seldom in normal circumstances want to use a macro lens wide-open, so the only advantage is a brighter viewfinder for focussing.How much difference does the aperature make in Macro as the Pentax is F4 and the Sigma F2:8 & the Tamron F2:5. I've found out some info on the Pentax & Tamron models but not much on the Sigma anyone used it.
And, of course, if you use the lens for non-macro work, 1:2.8 might be nice to have.
G
Comment by George Lazarette posted on Macro Lens at 25/01/2008 - 18:28
Quote:
I've just seen that a Vivitar Series 1 90mm macro lens has appeared on e-bay. I think this is the one I remember, goes to 1:2 native and 1:1 with adapter. The dealer's blurb suggests it's a star product but there are lies, damn lies and ....
If it's a '70s lens it'll be OK. The more recent "Series 1" lenses are rubbish.I've just seen that a Vivitar Series 1 90mm macro lens has appeared on e-bay. I think this is the one I remember, goes to 1:2 native and 1:1 with adapter. The dealer's blurb suggests it's a star product but there are lies, damn lies and ....
G
Comment by George Lazarette posted on Macro Lens at 21/01/2008 - 13:20
Quote:
Thanks for your welcomes and advice After a little more homework/head scratching I decided to get a mono pod. I went for a Giottos MM9570 Professional with tilt head, it seems a excellent sturdy piece of equipment. I went the mono pod route due to the terrain I would be in, plus the speed of erection . A tripod is on the things to get list, and maybe I should save up for a good quality one.
Thanks
Serendipity (Mick)
I think you should spend more time with the camera doing the kind of photography you want to do before deciding on what sort of tripod to get.Thanks for your welcomes and advice After a little more homework/head scratching I decided to get a mono pod. I went for a Giottos MM9570 Professional with tilt head, it seems a excellent sturdy piece of equipment. I went the mono pod route due to the terrain I would be in, plus the speed of erection . A tripod is on the things to get list, and maybe I should save up for a good quality one.
Thanks
Serendipity (Mick)
If you photograph birds in flight using a short tele, a tripod is not going to be much use. I find I can handhold a 300mm or 400mm lens and get acceptable results.
Tripods are for long lenses (in the main), and in your position, I would be saving up for a longer lens before buying a tripod.
Good luck.
G
Comment by George Lazarette posted on New member at 19/01/2008 - 09:37
Quote:
I find f/8 to be sharpest with my Sigma 105mm, but then depth of field is going to be a lot less than at f/27. Without knowing how large (or small) the flower is it would be hard to say whether DoF at the larger apertures would be too detrimental.
But it's a nice study, I like it.
Dan
Interesting charts, Dan. I see that the 77mm Ltd is significantly sharper than the FA 100mm macro, which is sharper than the best Canon 100mm macro, which is sharper than this Sigma.Mannesty wrote:
Nice shot but looks a bit soft to me.
Did you try taking some at f11 or f16? If yes, you might find that the in-focus portion is sharper at the expense of DOF, but that's no big deal.
I think we'd be hard pushed to say whether it was critically sharp at this size, but f/27 is a very small aperture and Mannesty's almost certainly right to suggest a wider one. Have a look at the MTF chart here: http://www.photozone.de/8Reviews/lenses/sigma_105_28/index.htm , you'll see the resolution of the lens is much poorer by f/22.Nice shot but looks a bit soft to me.
Did you try taking some at f11 or f16? If yes, you might find that the in-focus portion is sharper at the expense of DOF, but that's no big deal.
I find f/8 to be sharpest with my Sigma 105mm, but then depth of field is going to be a lot less than at f/27. Without knowing how large (or small) the flower is it would be hard to say whether DoF at the larger apertures would be too detrimental.
But it's a nice study, I like it.
Dan
The 31mm is even sharper than the 77mm, and the 43mm Ltd is sharpest of all.
The new micro Nikkor isn't bad, but it can't match the Ltds.
Sigmas represent good value for money, but tell me, why do people buy Canniks?
G
Comment by George Lazarette posted on Caesalpinnia Pulcherrima - Sigma 105 macro at 03/01/2008 - 00:13
Quote:
I think in this case its fine - its three pictures of one building. If he had however, put three pictures of three interesting buildings - then its just as if he's searching for votes.
I think three different views of one building is not materially different from one view of each of three different buildings.I think in this case its fine - its three pictures of one building. If he had however, put three pictures of three interesting buildings - then its just as if he's searching for votes.
However, I wasn't advocating that this triptych be disallowed; I was more concerned that we don't create a precedent where, for instance, next week somebody posts three or four different pictures of one subject, and claims that there is no difference between that and what Joshua has done.
For clarity, I would say that Josh should perhaps be allowed this one, but in future a "photo" is defined as a single picture, and that it should originate from a camera. That definition can embrace photographic montages, which are a single image from multiple original photographs.
G
Comment by George Lazarette posted on Discussion: Weekly competition No. 26 at 02/01/2008 - 16:10
I am very glad to see that Joshua Hakin, who pops up now and again to post some excellent pictures, has contributed to the latest competition.
However, I am a little concerned that what he has posted is not "a picture" but a gallery of three.
Joshua would perhaps argue that it is in the nature of a triptych, and should be viewed as though it were a single image. Well, perhaps, but next week we might get a pentptych with five images, or a polyptych with quite a number.
Any thoughts?
G
However, I am a little concerned that what he has posted is not "a picture" but a gallery of three.
Joshua would perhaps argue that it is in the nature of a triptych, and should be viewed as though it were a single image. Well, perhaps, but next week we might get a pentptych with five images, or a polyptych with quite a number.
Any thoughts?
G
Comment by George Lazarette posted on Discussion: Weekly competition No. 26 at 01/01/2008 - 16:56
does the k100 do wirless controller with the built in flash?
if not you'll need two flashes, or the cables (note the cables and shoe adapters are expensive enough to justify spending a little more to get the second flash...).
One thing I didn't mention was the cost of cables and adapters. It will be in the region of £80, so if you are going to spend that, you would be better off getting a second flashgun.
G