Do 10 year old K1 lenses still fit the new K1

All lenses with the Pentax K mount made in the last few decades (I'm not sure when the started the K mount system--the '70s? The '60s?) will fit the Pentax K-1 and earlier cameras. The only difference in the modern K mount lenses and vintage K mount lenses is in the capabilities of the lens itself. In other words, most K mount lenses produced today are capable of allowing for autofocus and programmed modes such as full-auto exposure, aperture-priority, shutter speed priority or full manual control. Most, if not all DSLR cameras made today can be used in all of these modes, provided the lens allows for it, but, unlike most major brands (which changed their mounts), all Pentax cameras that use the K mount can be used with vintage K mount lenses, though limited by the auto capabilities of the particular lens. For example, I have lenses I bought 30+ years ago for my Pentax P-3 35mm film camera that was capable of full-auto program, aperture priority, shutter priority or full manual modes, but not autofocus, so I can use these lenses on my modern Pentax cameras with any of the program modes, but they don't have autofocus capabilities, so focusing has to be done manually (which I usually do, anyway). The same holds true for any vintage K mount lens, even older basic, totally manual lenses made for even older 35mm film cameras, although if the older lens was not made to have automatic functions, your modern camera's automatic functions will not operate, but you can still use it by manually setting all parameters, like "real" photographers did "in the old days". This can be very useful if you come across an older 35mm camera with extra lenses in a yard sale or pawn shop, because you can get some very nice, long or specialty lenses that you can use (if you know how) at a very cheap price and just toss the film camera. (However, if you're buying old lenses, just be sure to check well for scratches and mildew growth inside the lens.)

Why does it say it has aps-c crop mode with k mount lenses?

ASP-C cameras have a smaller sensor 1.5x than a full sensor camera which has the same size sensor as the old 35mm film frame 24 x 36 mm full frame The K 1 and K 1 II allows you to use a crop mode to simulate the ASP-C size sensor if you want

Yes, this item is Sold by and Ships by Amazon.com. Therefore, it is an authorized USA product.

Is the raw file on this camera compatible with Photoshop CS5?

Yes! I've been using Pentax cameras since 1994 and never had any problems with Photoshop software.

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Specifications

Metering Methods	Center-Weighted Average, Evaluative, Spot
Exposure Control	Aperture Priority, Auto, Manual, Program, Sensitivity Priority, Shutter Priority
White Balance Settings	Auto, Daylight, Color Temperature, Tungsten, Fluorescent, Cloudy, Shade
Self Timer	2 seconds, 12 seconds
Screen Size	3.2 Inches
Display Type	LCD
Display Fixture Type	Articulating
Touch Screen Type	LCD
Display Resolution Maximum	1037000
Has Color Screen	Yes
Shooting Modes	Bulb Mode, Time Mode,Aperture Priority, Auto, Manual, Program, Sensitivity Priority, Shutter Priority
Digital-Still	Yes
Movie Mode	No
Image Capture Type	Stills
Night vision	No
Auto Focus Technology	Contrast Detection
Autofocus Points	33
Focus Type	Automatic, Continuous-Servo AF, Manual Focus, Single-Servo AF
Focus Mode	Automatic AF (AF-A), Continuous-Servo AF (AF-C), Manual Focus (MF), Single-Servo AF (AF-S)
Phase Detection Sensor Points	25
Autofocus	Yes
Aspect Ratio	4:3
File Format	JPEG,RAW,DNG
Effective Still Resolution	36 MP
JPEG Quality Level	Basic, Fine, Normal
Supported Image Format	DNG, JPEG, Raw
Dynamic Stops	14 Stops
Maximum Image Size	36 MP
Bit Depth	14 Bit
Maximum Focal Length	35 Millimeters
Optical Zoom	1 x
Lens Type	Body only
Zoom	Optical Zoom
Camera Lens	35 Mm
Minimum Focal Length	30 Centimeters
Real Angle Of View	63 Degrees
Focal Length Description	35mm
Number of Diaphragm Blades	6
Photo Filter Thread Size	49 Millimeters
Photo Filter Size	49 Millimeters
Connectivity Technology	USB, HDMI
Wireless Technology	Wi-Fi
Video Output	Micro-HDMI
Total USB 2.0 Ports	1
Total USB 3.0 Ports	2
Total USB Ports	2
Total Video Out Ports	1
Flash Memory Type	SDXC
Memory Slots Available	2
Memory Storage Capacity	128 GB
Recording Capacity	25 minutes
Flash Memory Installed Size	128 GB
Compatible Mountings	Pentax KAF3
Sensor Type	CMOS
Image stabilization	Dynamic
Maximum Aperture	3.5 Millimeters
Expanded ISO Minimum	100
Photo Sensor Resolution	36.77 MP
Photo Sensor Size	Full Frame (35mm)
Minimum Shutter Speed	30 seconds
Form Factor	DSLR
Special Feature	image-stabilization
Color	Camera Only
Item Weight	2.2 Pounds
Video Resolution	FHD 1080p
Viewfinder	Optical
Flash Modes	Auto, Auto/Red-Eye Reduction, Flash On, Flash On w/ Red-Eye Reduction, Hi-Speed Sync, Slow Sync, Slow Sync/Red-Eye Reduction, TTL Auto, Wireless
Camera Flash	Hotshoe
Skill Level	Amateur, Professional
Specific Uses For Product	Photography
Continuous Shooting	6.4 fps
Aperture modes	F2.8-F5.6
Viewfinder Magnification	0.70x
Flash Sync Speed	1/200 Second
Video Capture Format	Full HD, MPEG-4 AVC,H.264
Expanded ISO Maximum	819200
Battery Weight	200 Grams
Delay between shots	62.5 Milliseconds
Audio Output Type	Headphones
Battery Cell Type	Lithium Ion
Battery Type	Lithium Ion
Processor Description	Prime Engine 4 with Accelerator

Pentax

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