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Messages - adhocphotographer

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211
Lenses / Re: Canon 300mm f2.8 IS II
« on: October 20, 2013, 04:25:02 AM »
urrrrgghhhh, this is not helping me NOT buying this lens....  :D great shots and advice....

212
Third Party Manufacturers / Re: Sony A7 or A7R pre-order list
« on: October 17, 2013, 01:13:18 AM »
I am extremely tempted by it, though it is definitely not on the cards (unfortunately).  More glass is required, and I agree with what is said above regarding using smaller lenses on it.

Maybe in a few iterations, when there is more glass. But damn...  it looks soooo good....  Come on canon...  get your head out of your arse and produce something beautiful and functional for us...  otherwise Sony are going to be the new leader (if they carry on the way they are going that is).

213
Third Party Manufacturers / Re: Nikon 58/1.4 - $1,700!!!
« on: October 17, 2013, 01:08:06 AM »
In an attempt to get back on track....

58mm????  A bit of an odd focal length no? Do you think they use 58mm as it means mechanically/physically it is easier to have better IQ? Or is there some historic significance I am unaware of?

214
EOS Bodies - For Stills / Re: "Downgrading" for a very specific reason
« on: October 16, 2013, 12:07:07 PM »
All of these are very good points and interesting arguments....

I think if i were to start photography again, i would not go down the same path i did, but would buy an older second hand camera and a good lens. This thread is an argument for doing just that! To all the "what should i buy" guys out there...  pick up a used 5D I, and a 50mm instead of the newest XXXD kit...

I've been saying this exact thing to everyone who asks me what camera is best to start seriously into photography. You can grow with a 5Dc, study with it and eventually make money with it. It still makes good files in all its ISO ranges in my tastes.

If anyone on this thread would like to contribute photos to the 5Dc thread under the camera bodies section, it would be nice to see more photos from it.

You have indeed! I knew someone has been, but i could not remember who, and was too lazy to search! :)

215
EOS Bodies - For Stills / Re: Removal of IR Highpass filter
« on: October 16, 2013, 12:05:20 PM »
I thought that in the 450D the AA + dust removal where a singular, separate, unit to the high-pass (it is a high-pass right?), though your wisdom being what it is i will definitely re-check. Does that mean that even removing the IR-cut would abolish the dust removal system (DRS), or only once the AA filter is removed will the DRS be abolished?

Sorry - you're right. On the 450D, the horizontal low pass filter is the only thing in the vibrating part, so you can leave that in place.  However, the IR cut filter is sandwiched with the 1/4-wave plate (Canon calls that a phaser layer) and the vertical low pass filter. (It's low-pass, BTW - the AA filter is aka OLPF = optical low-pass filter.)  So, you can remove the IR filter and leave the dust removal intact.

Note that since the IR cut filter is not separable from the 1/4-wave plate and vertical low-pass filtter, by removing the IR filter, you're also removing half of the AA filter, giving your camera astigmatism (the horizontal resolution will still be reduced, the vertical resolution will not).

In which case, I might as well remove the AA filter too. the street value of a 450D is sooooo low, i think i'm going to give it a go. yes indeed it is a LP not a HP, i wasn't thinking! It has been a long time since i had to make a confocal!

TrabimanUK & arjay - seen it and taken note, thanks!

216
EOS Bodies - For Stills / Re: Removal of IR Highpass filter
« on: October 16, 2013, 09:41:56 AM »
I'm looking into getting the IR filter removed....

...but am also considering removing the AA filter too (a 450DE one might say). However this would remove the dust-removal feature....  anyone done this? was sensor dust then a problem?

From the diagrams I've seen, it appears that the IR cut filter and the horizontal part of the AA filter (along with the 1/4-wave plate) are all stacked together in the assembly that is piezoelectrically vibrated for 'sensor cleaning'.

I thought that in the 450D the AA + dust removal where a singular, separate, unit to the high-pass (it is a high-pass right?), though your wisdom being what it is i will definitely re-check. Does that mean that even removing the IR-cut would abolish the dust removal system (DRS), or only once the AA filter is removed will the DRS be abolished?

217
EOS Bodies - For Stills / Removal of IR Highpass filter
« on: October 16, 2013, 09:12:54 AM »
Hi all,

How many of you guys have removed the IR highpass filter in your DSLR.  I have an old, abused, well loved but unused 450D sitting around and i would love dearly to breath some new life into it. I have tried to sell it but to be honest the street value of it (lensless) is not worth me selling....  this was my first camera, and well, i love the little fella! :) As such, I'm looking into getting the IR filter removed....

How many of you guys have done this? any advice? I don't think i will replace it with another filter (e.g. Baader BCF), but am also considering removing the AA filter too (a 450DE one might say). However this would remove the dust-removal feature....  anyone done this? was sensor dust then a problem? :)

Thanks for any advice/experience in this area!

John

218
Lenses / Re: 1 Good lens vs a few crap lens's?
« on: October 15, 2013, 04:31:26 AM »
I'd vote for the 15-85. It is a great lens.

Heard good things about it too, and with great versatility...  My main question would be, are you planning on moving to FF soon? That might be the only reason for the 17-40....

219
EOS Bodies - For Stills / Re: "Downgrading" for a very specific reason
« on: October 15, 2013, 04:28:59 AM »
All of these are very good points and interesting arguments....

I think if i were to start photography again, i would not go down the same path i did, but would buy an older second hand camera and a good lens. This thread is an argument for doing just that! To all the "what should i buy" guys out there...  pick up a used 5D I, and a 50mm instead of the newest XXXD kit...

220
Street & City / Re: Random Acts of kindnes: Pics & Prose
« on: October 15, 2013, 04:18:47 AM »
Beautiful things happen every day, all the time, but mostly unnoticed by the masses, let alone captured. Great shot and well done. Sadly, I too have no similar shot, but many of my favourite shots are complete chance encounters. The lesson all over us need to remember is that luck favours the prepared!

221
Firstly, i would highly recommend taking a lens! :P

Although i have not been to Hanoi, In your situation i would slap on the 35 and go nuts! Get nice and close and dive into the action. Sure take the 135 is you want some length, but i would certainly have the 35 on for >90% of the time (I usually just leave my 24mm on when going to cities...  but i like wide and don't mind cropping if needed).

Either way, have fun! :)

222
Street & City / Re: 5D3 and ISO 51200: Firefighters rehearsing Emergency
« on: October 15, 2013, 04:04:47 AM »
Nice shot...  I think grain/noise actually adds to this shot! :) In low light, i often like noise in the shot (certainly a lot more than the 'plasticy' look of overused noise reduction). Often when the light is too low for 'normal' iso ranges, the noise of the image mimics the poor visibility our own eyes suffer in these situations, adding to the mood of the photograph. Use noise/grain, don't fight it! Anyway, i digress...  great shot. :)

223
Lenses / Re: Longer and faster, better?
« on: October 11, 2013, 04:47:31 AM »
I guess i will start saving....  by the time i have enough tucked away for the version II, i might have managed to persuade my wife it is necessary! :)

Good decision.

I too am saving up for the 300 f/2.8 II. The purchase will be funded in part by the sale of the 100-400. Not too sure though that I'll try to persuade my wife though ... I risk getting whacked over the head with one of the white lenses if I'm not careful ... this is one hell of a hobby!

I bought my wife (and me by extension) the 100D + 40mm STM....  Now she is asking to borrow my 24-105 for more length...  I'm hoping she will see the need herself and realise if i'm using the 300, she can use the 70-200! Well, thats the plan at the moment! ;)

224
Lenses / Re: Longer and faster, better?
« on: October 11, 2013, 03:49:57 AM »
I guess i will start saving....  by the time i have enough tucked away for the version II, i might have managed to persuade my wife it is necessary! :)

225
Lenses / Longer and faster, better?
« on: October 11, 2013, 01:59:11 AM »
Hey,

I am doing more and more wildlife photography (bit difficult not to living in India), and am thinking about getting a longer faster lens.

Most of my shooting is early in the morning, in the jungle/woods. every time i hope to come across tigers/leopards/bears, but these sightings are rare, so i amuse myself birding.

Currently i use a 5D MKIII and my 70-200 + 2x tcIII. The f/2.8 gives me the speed in the wee hours, and i pop on the TC when i need length and the light is better, but it is always a trade-off, and often i find myself in the situation where 200 is too short, but with the tc on the ISO/shutter speed is no longer ideal (there is an obvious point where i think adding the TC vs more extreme-cropping yields comparable results).

I am thinking about a 300mm 2.8, but the new version II is a little out of my budget. So either a second hand version I or maybe a Sigma EX 300mm f/2.8 APO DG HSM.

Any other suggestions? Has anyone any experience with the Sigma? How well does it take TCs? unfortunately TDP does not have the sigma in their comparison charts.

I guess this is more of a feasibility study for me. I'm trying to find the right/best price point.

Renting is an obvious solution for longer lenses, but it is not so easy here...  the few places that have these lenses are so overwhelmed, you need to reserve your lens weeks, if not months in advance. I am just not that well organised! :)

Thanks


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