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Mt Spokane Photography said:I've never had a binocular that did not have a adjustable diopter for one eye. Its been a universal feature forever. Don't worry, its there.
mackguyver said:It worked for me, on a tripod, shooting skyline shots of Miami the first time. I had the filter off, it ghosted. I put it on, it didn't, or didn't nearly as much. I pointed it at other light sources over the 3-4 years I had the lens with and without the filter, and every time, the filter helped suppress the ghosts.photonius said:mackguyver said:I'm not an optical engineer by any means, but I believe it works because it lessens the amount of the light from bouncing off the sensor from bouncing back into the sensor, which is what's causing the ghosting. The reflection off the sensor is going to hit the foremost piece of glass and reflect back into the sensor. By putting a better coated piece of glass in the front, I think it reduces the ghosting.photonius said:mackguyver said:Yes, with that and some other older lens designs that were pre-digital. I know it seems backwards, but if you think though it, the reflections are coming off the sensor (not an issue with film) and reflecting back on the front element. If the filter cuts down on the (internal) reflection with a modern multi-coating, that explains it. Again, it's no good in bright light, but helps with this specific type of reflection on lower intensity lights.Skirball said:mackguyver said:I found that my 50 1.4 did this same thing a lot, so I put a high quality multi-coated filter (like Hoya or B+W) and it took care of it. It won't fix flare from the sun or really bright lights, but should work in the example you posted.
You find you get less flare with a filter on?
Actually, physically this makes no sense. A filter in front of the lens will not prevent light bouncing off the sensor from reflecting from the front element or any other internal element. Once the light is through the filter, nothing can prevent any internal reflections.
That may or may not be sound logic, all I can say is that when I got my 50 1.4, I couldn't believe how badly it ghosted with night shots very similar to the OP's. I screwed a multi-coated filter on the front and the problem practically disappeared. Going back in my mind, it was a 450D, 50 f/1.4, and a Hoya HMC Super filter.
Ok, so how is a filter (let's say it lets 95% of the light through) supposed to lessen the amount of light bouncing off the sensor? The only filter that can reduce the incoming light is a neutral density filter, but it just makes all darker if you didn't adjust exposure (which would actually reduce reflections because light intensity is less)
Regarding your 50mm f1.4 experience, the most likely explanation is that you did not do it under controlled circumstances, i.e. the shots with and without filter were not identical. You can only compare if you put it on a tripod and do with and without filter.
I won't debate this any further. It worked. Period.
troutmouth said:70d will focus better, but the 6D is full frame - about the only advantage, but its a big one.
Zv said:I wouldn't have the confidence to rock up to a job with what outwardly looks like a P&S camera!
JoaoPedro said:My main concern with the 6D is ending up being frustrated by the outer points AF performance.
JoaoPedro said:Can you configure the camera to select the AF point directly through the multi controller (the inner part of the rear dial), without having to press first the dedicated AF area or point button?
JoaoPedro said:And how do you set the camera for an instant return to the center AF point? By pressing the SET button?
duydaniel said:a) ISO 6400 and the metering shows -1
b) ISO 12500 and the metering shows 0
c) ISO 25600 and the metering show +1
You can only choose one.
Which one should give you the least noise or best quality given you can do PP?
Not a problem. I figured what you meant but wanted to clarify...Zv said:Sorry by "you" I meant the whole thread and people in general. I figured you were shooting in RAW and prob knew all this stuff. Sometimes I type what I'm thinking!
neuroanatomist said:Lately, Canon makes retailers put in place a minimum advertised price once the rebates go into effect. If you time it carefully, and buy right at the beginning of the rebate, often the retailer may not have raised their price to the MAP, and you will get the discount of the rebate off of the street price.
Mt Spokane Photography said:AlanK said:OK - 11-22 it is! And I appreciate the suggestions on places to visit....
Alan
Is the 11-22mm available in the USA? You would have to order it from Canada. I don't think you can rent it either.
Fortunately, there are good Canadian stores to order it from, but there will be no service in the USA until / unless Canon decides to sell it here. The service centers won't have parts or tools to fix itr, so its back to Canada for any repairs.
If you get the EF-s 10-22, its readily available. Then with a adapter it can be used on either camera, and its a excellent lens. They are available refurbished as well.
http://shop.usa.canon.com/shop/en/catalog/lenses-flashes/refurbished-lenses-speedlites/ef-s-10-22mm-f-35-45-usm-refurbished
pwp said:If you've got a tight studio, I'd strongly suggest don't get either the 135 or an 85. Both good lenses, but you need some flexibility. If money is tight, seriously consider a pre-owned 70-200 f/4 non-IS. Make no mistake. This is class-glass. The flexibility a zoom brings to the table cannot be underestimated. Especially one as optically strong as any of Canon's 70-200 offerings.JonB8305 said:Situation is I have a tight studio, reach on the 135 might be tight, but the optics are probably superior.
Want an 85 1.2 but can't really afford it. The 1.8 might be a good compromise based on price, smaller reach for tighter spaces, I kind of think 440 might be much when the 50 1.8 is $100.
-pw
KyleSTL said:OK, now it's starting to make sense. Thanks for sharing the link, Pi. This does seem like an interesting technology. I just wonder what that section of the image would look like if you put a Pentax Q + shift adapter (for the higher pixel density ~ 250MP FF equivalent) on the Canon 8-15mm.
Also, here's a presentation:
http://psilab.ucsd.edu/publications/(presentation_2013)_stamenov_(OSA_IS).pdf
photonius said:surapon said:Dear Friends
I am Canon Fan/ user since 1954, My First Canon Camera = FT-QL, and until 1999, I have 6 more Canon Camera Bodies, And 7 Canon FD Lenses.
The Question that = The FD Lenses are worth to use with my EOS system with the Cheap Adapter( $ 35 US Dollars ) ?.
Yes, I have 24 Canon/ Sigma/ Tamron Lenses ( include 8 Canon " L " Lenses).
Thanks you, Sir.
Surapon
http://www.amazon.com/Albinar-Mount-Adapter-Canon-Infinity/dp/B001D8X72G
Even though you got some answers, the no was not made quite obvious:
The FD lenses have a mount flange distance of 42mm, which is shorter than the mount distance of EOS with 44mm. That means, in order to put an FD lens on an EOS body, you need an adapter with a glass element in it so that infinity focus can be maintained. This adapter works a little like a teleconverter. These are the cheap adapters you can find on ebay. They are not high quality, if you use your FD lenses with them, an 50mm F1.4 wide open will have very poor quality. A link to a test by bob atkins is found here:
http://photonius.wikispaces.com/Canon+FD+and+EF-S+adaptations
Some solutions:
1) As pointed out, you can use an adapter without glass, which works fine for macro etc, so it's like using your macro lens in the good old all manual focus days.
2) Ed Mika: He makes adapters for some long FD lenses, which can focus past infinity, so it works. Ed Mika also makes conversion kits, i.e. you take your lens, remove the the FD mount, and put on an EOS mount. It works only with a select set of lenses. Links to Ed mika are found in the above link, but he posted also here.
3) EOS-M. The mirror less cameras have much shorter flange distance. The EOS-M for example is only 18mm. That means it's easy to make a glass-less tube adapter for FD lenses. So you can use them with no problem.
Consumer FD glass is hardly worth using, since inexpensive modern kit lenses, e.g. 18-55 IS etc., are probably better. But anything you can use with a simple glass-less adapter should work like in the old days. The more expensive lenses (L), macros, even the 50mm f1.4 should be fine.
Botts said:Dylan777 said:Went out for lunch with some co-workers today, I stopped by the camera shop to try build in ND + grad filters --- well the last 2 x100s were sold :-\
You just made me sad I forgot about the built-in ND filters when I had the X100s rented.![]()
brad-man said:@ Marsu42: I was wondering where you picked up your 66D. It's not yet available in the states![]()
90mm TS-E Image circle dia. 58.6mmneuroanatomist said:c.d.embrey said:AFAIK no Canaon DSLR lenses would work.
I believe the current TS-E lenses would work - they have very large image circles to accommodate the movements (although on MF, you'd be limited in TS capability).
Mika said:But online sites are far more convenient for referencing and save me from quite a bit of hassle.
neuroanatomist said:Just now. Turns out there's nothing wrong with your 600EX-RT (or at least if there is, the same thing is 'wrong' with the three of them that I have).
I tried again with the 24-70/2.8L II, and the center point gives the thin vertical AF assist. The 70-300mm f/4-5.6L IS gives the full AF assist array even with the center point selected.
So...I tried it with a variety of lenses, and this is what I found with the center point selected (selecting a point away from the center column always gives the full AF assist array):
- EF 16-35mm f/2.8L II - thin vertical AF assist line
- EF 24-70mm f/2.8L II - thin vertical AF assist line
- EF 28-300mm f/3.5-5.6L IS - full AF array
- EF 70-200mm f/2.8L IS II - thin vertical AF assist line
- EF 70-200mm f/2.8L IS II + 1.4xIII - full AF array
- EF 70-200mm f/2.8L IS II + 2xIII - full AF array
- EF 70-300mm f/4-5.6L IS - full AF array
- EF 100-400mm f/4.5-5.6L IS - full AF array
- EF 85mm f/1.2L II - thin vertical AF assist line
- EF 100mm f/2.8L Macro IS - full AF array
- EF 135mm f/2L - thin vertical AF assist line
- EF 600mm f/4L IS II - full AF array (part of which is blocked by the lens
)
You found that your 50/1.4 gives the thin vertical line, whereas your 15mm f/2.8 fisheye and 24-105L give the full array, and likewise, my 100mm f/2.8L Macro also gives the full array, while other f/2.8 and faster lenses give the thin vertical line.
Taken together, that suggests that with the 5DIII or 1D X and the 600EX-RT flash, the determining factor is which AF 'group' the lens is in. Only Group A lenses give the thin vertical AF assist line with the center point selected, whereas Group B and slower lenses give the full array (the 15/2.8 Fisheye is in Group B, the 100/2.8L IS and f/4 lenses are in Group C, etc.).