Tamron 150-600 Shootout via LensRentals.com

There are a lot of financially or sensibly constrained punters out there looking for a sharp used prime capable of good performance with 1.4x and 2x TC.

I am thinking of the 300/2.8 IS to give 420 and 600, 400/4 DO to give 560 and the Sigma 120-300/2.8 to give 420 and 600 again. But all require stopping down 1 stop to get any reasonable performance at 600 ie 600/8.

As test results come through and IF it is really true that Tamron 600/8 performance is OK then it may become blindingly obvious that if you really want the 300-600 range the Tamron is the lens to get.

Tamron has placed the cat amongst the pigeons and good luck to them.
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How many radioactive lenses do you own?


I quoted those numbers because some people were talking about Fukushima as if the largest radiation dose anywhere near the place would be measured in single millisievers or less! But of course you're right, different radioactive materials emit different amounts if different radiation types which are dangerous in different ways.

Now let's put an end to this! I made this thread as something fun and lighthearted so let's keep it that way. No one should worry about a little radiation, it's normal, or even a lot of radiation like multiple CT scans and x-rays. Life is too short to worry! But it's also not good to think radiation can't ever harm you.
edit: removed bleak stuff! :)
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Need a new camera bag, help? 2 bodies + bunch of stuff

privatebydesign said:
Rocky said:
Good points. However, If the rule is there, the gate agent have ALL the rights to stop you if your carry on does not meet their weight requirement, then, your unprotected camera bag will be gate checked. What are you going to do at that time? Even between big airports, it will happen. I have be requested to lighten up my carry on between SFO and Singapore to meet the 7 Kg rule. Same thing happen between LAX and Mebourne Ausralia. Travelling within US and between US and Canada is a lot more forgiving on the wieght of carry on. Travelling oversea, even between US and oversea is a different ball game.

When that has happened to me, and I had it happen several times the worst was in Heathrow in the UK. I put my 17" MBP down the back of my trousers, I put my Cagoule on and filled the front pocket with my 70-200 f2.8, 24-70 f2.8 and some batteries, I stuck the 16-35 on the 1Ds MkIII and put it over my shoulder and then reweighed it, all was good, got the boarding pass and put it all back in the bag.

I'll do something similar, I'll let them check the tripod and other stabilizers and if that's not enough I'll shove lenses in my pockets/under my shirt til they're happy. :D
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slow focusing on canon 300 mm 2,8 IS

neuroanatomist said:
Slow compared to what? Regardless, it's definitely not going to be instantaneous to go from MFD to infinity. Canon knows this, which is why they put a focus limiter switch on the lens.

Iam compared with canon 400 mm 5,6 L and this lens and this lens seems to me that it has a faster response when focusing from close to infinity...and and overall seems faster somehow, I am testen on 1D Mark IV and 7D body ...
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Replacement for EF-S 17-85mm/ 4,0-5,6/ IS USM

m said:
ajfotofilmagem said:
There are several options lens starting at 17mm:
Canon 17-55mm IS
Sigma 17-50mm OS
Sigma 17-70mm OS contenporary
Tamron 17-50mm
Tamron 17-50mm VC
Thanks for the list. I'm capable of googlin' together 17mm lenses.
As said I do not insist on 17mm. What I like to hear about are personal impressions =)
ajfotofilmagem said:
I have a Tokina 16-50mm (no longer produced) I can say that was made ​​to last many years.
I heard of Tokina's solid builds.
How did it perform optically?
Tokina 16-50mm F2.8 has very good picture , but it has the weakness of chromatic aberration at wide angle, at maximum aperture diaphragm. So I specifically avoid the combination 16mm F2.8 . As a general rule, the greatest weakness of the Tokina wide angle lenses is chromatic aberration. There is no perfect lens. In the case of zoom lens, when zoom is in short end, performance can be completely different from performance at zoom tele end, and completely different in the middle of the zoom. In different diaphragm apertures, the performance also varies dramatically. So to choose the best lens for your case, compare the tests several similar models, and see if the weaknesses are in the position of the lens zoom and aperture diaphragm would you most like to use. It is important to compare only tests performed with the same methodology. If you compare the test of a lens in PHOTOZONE with another lens test in DXO, the results have useless because the test methodology is completely different, and give invalid conclusions.
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Excellent Customer Service "Cullmann"

I have a more than 10 years old "Cullmann Clamp".
It is a really handy and stable support for Cameras or Speedlites.
But I managed to break of the clamping plate (pictures attached).
So I wrote a mail to Cullmann Germany describing my problem and requesting a replacement part.
They answered within 3 hours asking for my Address.
And 2 days later a free replacement screw was in my mail!

I think that is an excellent example of great and uncomplicated customer service.

I am very positively surprised by that and wanted to share it.

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Best Nikon DF Review! By Fstoppers.

I think this really sums up the reason why the Df got as much hate as it did, it fell into a sweet spot where several groups of insecure people were likely to take a pop at it...

1.Mirrorless users - Up until now digital camera's sold on looks and reduction in size have been almost entirely mirrorless, a DSLR looking to do the same will obviously draw the ire of insecure users. Strange how the likes of F-stoppers didn't seem to care much about hipsters buying camera's for looking before the Df.

2.DSLR users - Insecure users on the DSLR side of the debate have long argued their preference for the handling modern DSLR's give, large grips and an interface via control wheels with shift buttons and a top plate LCD.

3.Canon users - Any Nikon release will get some criticism from insecure Canon users, the same being true of any Canon release from insecure Nikon users. That the camera in question is very different from any existing Canon product makes this more extreme.

A few comments I'd make on the review would be that I'd disagree that the Df offers no size saving compared to the D600. Its more of less the same in terms of height and width but depth wise your talking a significantly smaller profile, without the large grip your potentially talking space for an extra lens in a kit bag while traveling. Being a DSLR as well its actually a camera I'd consider taking traveling without needing to worry about constant battery changes/charging.

In terms of controls obviously the dials wouldn't be to everyone's taste but personally I think Nikon took the correct route in making them possible to override. If you want to stick to using the shutter speed dial that's perfectly possible, as is shooting only in shutter priority or full manual or using a pre G lens for aperture control. Indeed my main criticism of the Df is that it doesn't seem like you get do this with ISO. The X-T1 not offering the ability to at least shift shutter speed via a front control wheel to me makes it far less effective at doing double duty as a more action focused camera. Equally you can't get any kind of meter readout on the X-T1 from above because it lacks an LCD.

Talking of the X-t1 I think the Df makes a lot more sense in marketing terms when viewed in relation to it. Unlike the rest of the mirrorless market that has IMHO focused mostly on upgrading compact users or DSLR users shifting there entire system across to a smaller alternative I think Fuji has really targeted the second camera market, that is DSLR users buying a smaller retro style body to use along side it. The Df is IMHO Nikon's attempt to get in on some of these second camera business, it doesn't offer as much size saving but is still clearly smaller than something like a D800/D700 or a D3/D4. The massive advantage it does offer though is not having to invest in a second system of lenses, you look at the cost of say the X-T1 with the 23mm 1.4 and 56mm 1.2 and your talking several hundred dollars more than the Df which you can use your existing F-mount lenses on.

You can add another group to hate the Df there as well, Nikon users who've already bought into the Fuji system.
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Samyang announces filter holder for the 14mm f/2.8 lens

rmfagan said:
I am aware that uses for a cpl extend beyond darkening skies. Rather I was using that as an example. Regardless, natural or artificial light will scatter and an ultra wide such as the Samyang 14 will result in uneven polarization across the frame, whether that frame includes sky or not. Granted, this phenomenon is most apparent with an even subject such as a blue sky. While other images may not show it as well, it still occurs.

I use a CPL with the 17TS-E a lot, it does an amazingly good job of killing glare in interiors and on pool decks. Wooden floors, wow, couldn't shoot a wooden floor without a CPL now, same for granite counter tops etc etc.
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Canon PowerShot G1 X Successor Coming Shortly [CR2]

Lee Jay said:
Canon Rumors said:
You can expect a smaller and lighter body, a big boost in image quality (sensor size is unknown at this time), DIGIC 6,...

Big boost in image quality? The 70D sensor would be a small boost in image quality, and the processing of the DIGIC 6 would likewise be a small boost in JPEG image quality. So is that what passes for a "big boost in image quality" or are they doing something else, like an exceptional lens or better sensor technology than in the 70D? It's hard for me to believe they'd introduce new sensor tech in a product such as this, so I'm at a loss.

I had a thought.

Let's say it has the 70D sensor, but with firmware that reads each half of each pixel at different ISOs, kind of like what ML is doing to increase dynamic range. That could be a "big boost in image quality". And, what if at the release, a new firmware for the 70D comes out that does the same thing with that camera? That would be kind of cool!
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Review: Sony A7R With Canon Glass

jonsjons said:
ok, so I've been seriously considering picking up the a7r and metabones adapter for a while now, but I've been waiting for more info on the corner issues with wideangle lenses. this review is encouraging, but for my landscape work I often shoot REALLY wide - my favorite lenses for this are the Sigma 12-24 and Nikon 14-24. what do you guys think? does this sound like a good idea? the a7r would make a great hiking camera, and if image quality is better than my 5d2 it may take over all of the on-tripod duties....

DSLR lenses usually have no problem at all. The problem with WA can occur with RF lenses.
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