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Messages - photonius

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Lenses / Yongnuo 50mm f1.4 AF lens
« on: September 29, 2014, 10:54:05 AM »
Looks similar to the Canon, same specs in terms of elements as the canon.

Are the Chinese lens copies now coming?

PowerShot / Re: Official: Canon PowerShot SX60 HS
« on: September 20, 2014, 07:12:14 AM »
an interesting all-in-one travel camera with 21mm wide-angle, but no GPS....  :( no deal.

These are interesting rig-ups; I got a Reflecta CrystalScan 7200 a few birthdays ago but have been too occupied/lazy to use it so far. :-[ I am however saving it for the day when I feel motivated to scan some old (or new) material.

I wonder why nobody has so far posted any pictures that show the photographed and processed results.


based on this review it's not so useful for scanning thousands of slides because of the speed
that's why copying slides at least with camera is faster. now, I still need some time... ;-)

good comments by eos650 and frodo.
I also made a slide copier set-up for similar reasons, see here:

The issue I haven't solved either yet though is how to do a good correction profile for negatives. (I have mostly slides, so negatives not a priority)


Congrats JD, but I'd advise staying away from either of those if all you've got is $15.  The drink is likely to come in a 1.75L plastic bottle and won't leave you feeling too well.  The other could result in a nasty legal or medical bill :o, if you don't get mugged in the process.

Natty Lite and Taco Bell might be more realistic and a tad bit healthier. 

On the other point, welcome to selling your photography.  You'll find out how individual taste really is when you sell your work.  The stuff you love rarely sells well, and vice versa.  The effort you spend taking a photo and editing it means almost nothing in most genres.  Only the final image matters.  If you don't believe me, here's a sampling of my work that one of longtime clients has chosen, and let me tell you, the rest of the work I've sent them for consideration is MUCH better. All of these shots were actually what I'd consider "outtakes" - shots that I took because I was there, not because I intended them for use/sale.  And they have used them for magazine ads, billboards, and huge prints in their branches!:

well, perhaps sometimes a more bland picture is desired in ads, to avoid taking away the focus from the message.

Lenses / Re: Filter for Tamron 150-600?
« on: June 13, 2014, 09:08:36 AM »
Hi guys,

thanks for your feedback - especially about the Marumi, as I hadn't heard much about them before.

I prefer Melitta or Folgers filters. Disposable, and inexpensive. they have some vignetting though  ;)

photonius, thanks.  You forgot to mention they biodegrabable too!  Not too sure about their UV filtering ability, but might make for a romantic misty feel to the shot as the lion is tyrying to rip my face off  ;)

Cheers guys!   :)

And you can use them to pad your wounds... ;)   

Seriously, from all I've seen, a UV/protector filter on these big teles is best avoided unless you have a special reason.
I've compiled filter info a while back, including links to the tests
as pointed out, the marumi seems quite ok.

Lenses / Re: Filter for Tamron 150-600?
« on: June 12, 2014, 06:03:54 PM »
I prefer Melitta or Folgers filters. Disposable, and inexpensive. they have some vignetting though  ;)

EOS Bodies / Re: When Does the Year of the Lens Start?
« on: May 02, 2014, 05:35:11 PM »
As Eldar points out, the year has started.

We have:

Tamron 150-600 for Canon
Sigma 50mm f1.4 Art for Canon

more to come...

And then they wonder why the dSLR market is stagnating, shrinking.   10 Million lenses in 11 months, that's a bubble that can't be maintained if one compares to the sales from 1987 to 2001.

Third Party Manufacturers / Re: Samyang 650-1300mm
« on: April 14, 2014, 11:52:27 AM »
Lots of hate towards this lens (rightly so perhaps) but not many suggestions other then buying another camera or just using a 300m and cropping.

Are there no other decent long lens/scope alternatives to consider?

The new Tamron 150-600 is your best bet

Third Party Manufacturers / Re: Samyang 650-1300mm
« on: April 13, 2014, 05:44:44 PM »
Hi All, has anyone used a Samyang 650-1300mm lens,

I'm just after an opinion if it's good/bad?   :-\

one thing to remember about this lens and the catadioptric ones from samyang: they are from the area before they started to release the well received new primes for dSLRs  (85mm, 35mm, 14mm, 8mm fish eye and more). so they are not in the same category

I haven't made a living by photography in a very long time (I find more joy in being a hobby shooter) but it seems to me that you were present at the wedding as a guest of the contracted photographer for a learning experience.  I sense an ethical dilemma in "poaching" sales even though the bride preferred your shots.  In fact, I would have turned down her request to view them.  If you had been a guest of the bride or groom at the wedding then I wouldn't see the same problem.

I agree. This is an ethics problem.

You are going to have to chalk this up to being a learning experience... if you are doing a job, find out what your responsibilities are beforehand and who your images belong to....

There are two big questions here that will decide your actions:

1) Do the images that you shot belong to you, or do they belong to the event photographer?
2) Will you be taking money away from the event photographer? Should you be sharing the revenue from any extra work with them, and in what proportion?

In the end... the bride MUST get the pictures, regardless of who she has to pay or even if it is free. The last thing you want is to have your name attached to an angry bride who has been denied pictures of her wedding day. This will create a situation that can destroy any good will and reputation that you are trying to build... even if you have to give them away for free, chalk it up to good marketing....

Right, the last thing you want to do is deny the photos to the bridge, that would just be atrocious

Is it just me, or does this press release sound like an April Fool's post? 

"enables shots to be taken four centimeters closer than with rival lens models, an advantage for camera operators working in tight locations such as studio spaces or on-site home-improvement reality television locations"

"enables news shooters to capture “head and shoulders” shots from distances further away than previously possible"

"Other important changes in the Canon HJ18ex7.6B portable HD zoom lens that further enhance user convenience include . . . deletion of the glossy logo plate"

well, the glossy logo plate could be annoying if the sun reflects off it and blinds the cameraman, or newscaster.

Here is what the same scene from each image looks like when enlarged to the same size.... SX-50, Tamron 150-600, and Tamron 150-600 and 1.4X teleconverter.

In this case, it seems like the Tamron with the teleconverter resolves the most detail, the bare Tamron is second, and the SX-50 comes in last.... but when you consider I paid $300 for the SX-50 on sale and it fits into a coat pocket, it is a surprisingly good performance for such a camera.

Nice comparison. I've always been wondering about such comparisons, even just to a Canon 100-400 (before the Tamron came along).
An important aspect - or problem - of the bridge cameras is the small sensor and the aperture (usually 5.6 or even less) at the long end. It means that diffraction is already well into affecting image quality no matter how good the bridge lens is. Rough calculations suggest that at f6.3 or so, a resolution limit of  ~ 2Mp is obtained for this sensor size. Thus a bridge camera is not as effective as the equivalent focal length would suggest.

Hi all, I'm an amateur photographer in the us. I will be heading to India and China and need some advice on a new camera. I've never owned an dslr and not so sure the weight is something I want to tackle right now. Not to mention any security issues, I don't want to lose my first dslr.

Anyway I'm looking to take some great photos while I am there. I really want the quality and ease of use. Something I can transport and pull out at a moments notice.  I'd use my cell phone but I'm just not over impressed with the image quality.  I've got a cheap point and shoot. But I'm looking for something more. GPS, image quality, low light, and colors will be very important (especially in india). I could be talked into a dslr but again this is my first. I've had time to use my cousins 7D but noticed it was very heavy. I do like the way it fit in my hand And made me want to take pictures. Something about the right camera that says use me.

Do you have any advice for me on what to buy?  Thanks.


How much time do you have left??  A dSLR might take a bit of time to learn.  Too many people buy a dSLR and treat it like a P&S and are disappointed, because they don't take into account shutter speed (to take an image without hand shake), DOF (depth of field, is much shallower on dSLR, giving the impression that the image may not be sharp in many places, but that's the whole point of dSLR), the right focus point (because of the narrower DOF, focus needs to be on the right spot, the full automatic on a camera does not allows select the right focus point, leading to the main subject being out of focus).  Then there is the issue of focal range, usually you have to change lenses to cover a decent range. If you have something like a Canon SX50, (24-1200mm focal range) you cover most of what you would ever need.
 Another point: Most dSLRs still don't have GPS (Not sure why, since many P&S have it).

As to weight for a dSLR, look at the Canon SL1, the lightest dSLR there is.  Some light lenses that go well along with it, are the 18-55 STM, and the 55-250 STM.  They are not fast (don't have large aperture), so you might have to complement with a faster prime, if you want that, e.g. a 35mm f2, or 50mm f1.8. You might also want wider angle, then a Canon 10-22 would be a good addition.

If that travel set above spooks you and you don't have time to practice a bit with it, you might be better of with a bridge camera (e.g. Canon sx50) for a large focal range, but with a small sensor. Or you could go with e.g.  something like a Canon 1GX, or G16,  they have faster lenses, but less focal range.

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