I want resolution

Started Dec 17, 2009 | Discussions
Gurgel Kanel Junior Member • Posts: 32
I want resolution

So you want to buy the 18Mpix Canon 7D because you need (want) hight resolution? Then you have to search for very good optics because their standard EF-S 15-85mm on the 7D will be outperformed by the amateurish Pentax K-x with the cheap kit lens.
http://www.photoreview.com have tested both, and the resolution chart is interesting:

If you use raw the center resolution of the K-x exceeds the 7D, when the egde is little below. Not bad for a beginners camera? (the jpg is another story...)

jonska Veteran Member • Posts: 3,212
Well, I'll be....

This has been up for twelve minutes and you haven't been flamed even once!

But these are interesting results. Thanks for the heads up.
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OP Gurgel Kanel Junior Member • Posts: 32
Re: Well, I'll be....

he he

timo Veteran Member • Posts: 5,446
Re: I want resolution

Gurgel Kanel wrote:

http://www.photoreview.com have tested both, and the resolution chart is interesting:

Should it be http://www.review.com.au ?
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tim

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timo Veteran Member • Posts: 5,446
Re: I want resolution

timo wrote:

Gurgel Kanel wrote:

http://www.photoreview.com have tested both, and the resolution chart is interesting:

Should it be http://www.review.com.au ?
--
tim

I mean http://www.photoreview.com.au

can't type this early in the morning

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jonska Veteran Member • Posts: 3,212
Funny

timo wrote:

timo wrote:

Gurgel Kanel wrote:

http://www.photoreview.com have tested both, and the resolution chart is interesting:

Should it be http://www.review.com.au ?
--
tim

I mean http://www.photoreview.com.au

can't type this early in the morning

Funny. The link in the original post first took me directly to the comparison chart. Now it is offering to hook me up with a date ...

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audiobomber
audiobomber Veteran Member • Posts: 5,766
Re: I want resolution

I know a guy like this. He has a 50D with an 18-200mm IS, the only lens he intends to buy. But it's not worse than some noob K-x owners shooting with kit lenses at f5.6 and bragging about ISO 6400.
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OP Gurgel Kanel Junior Member • Posts: 32
Correct link: http://www.photoreview.com.au

Thank you for correcting me. It's:
http://www.photoreview.com.au

OP Gurgel Kanel Junior Member • Posts: 32
Re: I want resolution

audiobomber wrote:

I know a guy like this. He has a 50D with an 18-200mm IS, the only lens he intends to buy.

What's wrong with that?

audiobomber
audiobomber Veteran Member • Posts: 5,766
Re: I want resolution

Gurgel Kanel wrote:

audiobomber wrote:

I know a guy like this. He has a 50D with an 18-200mm IS, the only lens he intends to buy.

What's wrong with that?

Well, the point of the thread is that the camera outresolves the lens. Surely you didn't think the K-x outresolves the 7D.

The 50D also outperforms this photographer by a laughable amount. A superzoom has a lot of weaknesses that the camera in Green mode can't make up for. He would get better photos with more spent on lenses, less on the camera.
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magomago Regular Member • Posts: 214
Re: I want resolution

if he is looking for versatility then there is nothing wrong with going superzoom. Its about balancing tradeoffs. IMO if I had to have a superzoom, I doubt i'd get a 50D.

And what is wrong with showing off iso6400 shots @ 5.6 with the kit lens? You have to remember that when you pay hundreds of dollars more you aren't getting several hundred percent increase in image quality. 20-30% increase in resolution that a lens brings will definitely cost a lot of money. This was pointed out to me when I was searching for a replacement for a kit lens - I settled on a 16-45 not because of IQ increase, but because it gave me 2 more mm on the wide end. And in many cases the differences are mostly apparent when you are wide open - stopping down usually fixes many problems such as reduced sharpness, vignetting, etc.

Anyways I agree with you in that I also don't get the point of this thread - all it has told me is that kit lens are comparable. Pentax's kit lens seems to do better at the center, whereas Canon's kit lens is more balanced towards the edges. It says nothing about actual ability of the sensor to resolve details. I'm sure the 7D, with proper glass, has top quality resolution.

The way I would read this chart is that for the casual user, the 7D probably isn't for them. Many of them will keep a kit lens and just get a zoom. Triple the cost doesn't produce triple the quality out of the box - you need equally expensive lenses to gain any resolution advantage. And if resolution advantage isn't key, then I doubt 10+ fps vs 4 fps matters, and I doubt shooting a bajillion raws in a row vs shooting 10-15 raws in a row also matters, and 1080p vs 720p is most likely also a non issue.

Or maybe it does matter...but the difference in cost doesn't justify it. Now for a pro who makes his living off of shots, its a totally different story.

audiobomber wrote:

Gurgel Kanel wrote:

audiobomber wrote:

I know a guy like this. He has a 50D with an 18-200mm IS, the only lens he intends to buy.

What's wrong with that?

Well, the point of the thread is that the camera outresolves the lens. Surely you didn't think the K-x outresolves the 7D.

The 50D also outperforms this photographer by a laughable amount. A superzoom has a lot of weaknesses that the camera in Green mode can't make up for. He would get better photos with more spent on lenses, less on the camera.
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Dan

Anastigmat Forum Pro • Posts: 12,675
Re: I want resolution

Gurgel Kanel wrote:

So you want to buy the 18Mpix Canon 7D because you need (want) hight resolution?

No I don't. It is a waste of money. Paying $1,700 for an APS-C body in 2009-2010 is nuts. Add $300 and you get a full frame Sony A850. People who buy the Canon 7D get no sympathy from me.

Cideway
Cideway Veteran Member • Posts: 5,707
Re: I want resolution

That seems reasonable except that you would be getting a Sony... That said you do have a point as the Canon system is the only one that doesn't really offer any advantages to it's APS crowd.
--
Chris.

A weather sealed ultra wide, is that too much to ask?

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Leuf Senior Member • Posts: 1,131
Re: I want resolution

audiobomber wrote:

The 50D also outperforms this photographer by a laughable amount.

The only thing laughable is that you think you know anything about this photographer based only on what gear he uses.

Stephan Busch Regular Member • Posts: 162
Re: I want resolution

Very interesting, but it does raise a concern that as Pentax cameras increase their resolution, is their lens quality keeping up with the technology? In other words, does the K7 have too much resolution for some of the Pentax lenses available? Shouldn't there be a formal guideline with regards to which top of the range lenses are best for which resolutions - all we have to work on are reviews by users & magazines?

zxaar Veteran Member • Posts: 4,354
Re: I want resolution

in this case a850 happened to be excellent camera too, plus if you had nikon or canon written on it instead of sony you would be at least paying 500$ more for same thing (that too because of sony's presence), if sony were absent you might even be paying 4000$ types for same thing.

I think one should thanks sony for time of cheap full frames.

Cideway wrote:

That seems reasonable except that you would be getting a Sony... That said you do have a point as the Canon system is the only one that doesn't really offer any advantages to it's APS crowd.
--
Chris.

A weather sealed ultra wide, is that too much to ask?

http://www.pentaxphotogallery.com/chriside

GMT +9.5

Pentax SLR talk FAQ
http://forums.dpreview.com/forums/read.asp?forum=1036&message=23161072

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audiobomber
audiobomber Veteran Member • Posts: 5,766
Re: I want resolution

Leuf wrote:

audiobomber wrote:

The 50D also outperforms this photographer by a laughable amount.

The only thing laughable is that you think you know anything about this photographer based only on what gear he uses.

Actually I know him very well. He selected the 50D because it has 15mp and my K20D only has 14.6; plus his camera is more expensive and the salesman told him Canon is better than Pentax. He tells me over and over that it shoots 6 fps.

He was complaining about some of his photos taken in room lighting. I started to explain AWB and why he needed to use the Tungsten setting. He wouldn't even let me finish. Not interested, it requires him to change a setting on the camera. I tried to explain about shutter speed and slow lenses, he's not interested in changing lenses. Talking about exposure loses his attention immediately. He won't change any defaults and only uses Green mode. He's buying a grip though, because he has large hands and because it makes his big Canon look more impressive.

Please tell me why he needed to spend an extra $1K for the handling of a 50D over the baseline Canon. Or why he needs 15mp when he only intends to use a superzoom.

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Dan

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OP Gurgel Kanel Junior Member • Posts: 32
Re: I want resolution

audiobomber wrote:

Please tell me why he needed to spend an extra $1K for the handling of a 50D over the baseline Canon. Or why he needs 15mp when he only intends to use a superzoom.

There is probably no reason for him not to buy the cheapest Canon (1000D?). In Norway people are so rich, so it's even worse here. A few days ago a man (a man of cource) asked in a local photo forum: "I need help to upgrade my Nikon equipment, I want to spend about $13000,- on it. What do I need?". He already has a lot, and listed a lot of lenses and the complete obsolete and useless D200
So much money and the only thing he want is to spend them!

I'm happy that another member answered: "If you have to ask here what to buy, you don't need to spend $13000 on equipment".

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